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Bearing Tables
CONTENTS
Deep groove ball bearings Page
Single-row deep groove ball bearings ........................................... 32 – 37
Metric series Bore diameter 1 – 9 mm ................................. 32 – 35
Inch series Bore diameter 1.016 – 9.525 mm ................... 36 – 37
Deep groove ball bearings with flanged outer ring ......................... 38 – 43
Metric series Bore diameter 1 – 9 mm ................................. 38 – 41
Inch series Bore diameter 1.191 – 9.525 mm ................... 42 – 43
Deep groove ball bearings with extended inner ring ...................... 44 – 45
Inch series Bore diameter 1.191 – 7.938 mm
Deep groove ball bearings with extended inner ring, flanged ......... 46 – 47
Inch series Bore diameter 1.191 – 7.938 mm
Ball bearings for synchros ............................................................. 48 – 49
Inch series Bore diameter 1.984 – 6.350 mm
Extra-thin-section deep groove ball bearings ................................ 50 – 51
Metric series Bore diameter 10 – 15 mm
Angular contact ball bearings
Metric series Bore diameter 4 – 9 mm ................................. 50 – 51
32 33
Single-row deep groove ball bearings
Metric series
600, MR
Bore diameter
1 – 4 mm
Boundary dimensions(mm)
d D B B1 r(1)
r1(1)
min. min.
Basic load ratings(N) {kgf}
Cr Cor Cr Cor
Limiting speeds (min-1)
Grease OilOpen OpenZ ·ZZ Z
1
1.2
1.5
2
2.5
3
4
334
4
456
556
677
6788
678
899
1013
7789
101112
1316
11.51.6
1.8
1.222.5
1.522.3
2.52.52.8
1.82.52.52.8
222.5
32.53
45
2—22.5
344
55
———
2.5
22.63
2.32.53
2.533.5
2.63.5—4
2.53—
445
45
—2.534
444
55
0.050.050.1
0.1
0.050.150.15
0.080.10.15
0.150.150.15
0.080.150.20.15
0.10.10.15
0.150.20.15
0.150.2
0.1—
0.15(0.15)
0.20.150.2
0.20.3
———
0.1
0.050.150.15
0.080.10.15
0.150.150.15
0.080.15
—0.15
0.10.1
—
0.150.150.15
0.150.2
—0.10.1(0.15)
0.150.150.2
0.20.3
8080
138
138
112237330
169187330
330385385
208385560550
208390560
560570570
6301 300
310255395640
710960960
1 3001 730
232335
35
336998
505898
98127127
74127179175
74130179
179187187
218485
115107139225
270345345
485670
88
14
14
112434
171934
343939
21395756
214057
575858
64133
32264065
739898
133177
2.52.53.5
3.5
3.57
10
56
10
101313
7.5131818
7.51318
181919
2249
12111423
283535
4968
130 000130 000100 000
110 000
100 00085 00075 000
85 00085 00075 000
75 00063 00063 000
71 00063 00060 00060 000
71 00063 00060 000
60 00056 00056 000
50 00040 000
60 00060 00056 00053 000
50 00048 00048 000
40 00036 000
150 000150 000120 000
130 000
120 000100 000
90 000
100 000100 000
90 000
90 00075 00075 000
80 00075 00067 00071 000
80 00075 00067 000
67 00067 00067 000
60 00048 000
67 00071 00067 00063 000
60 00056 00056 000
48 00043 000
Bearing numbers
Open Shielded Seales
Abutment and fillet dimensions(mm)
da db Da Db ra rb
min. max. max. min. max. max.
Mass(g)
Open Shieldedapprox.
681MR 31
691
MR 41 X
681 X691 X601 X
682MR 52 B
692
MR 62MR 72
602
682 X692 X
MR 82 X602 X
MR 63683 A
MR 83
693MR 93
603
623633
MR 74—
MR 84684 A
MR 104 B694604
624634
———
MR 41 XZZ
681 XZZ691 XZZ601 XZZ
682 ZZMR 52 BZZ
692 ZZ
MR 62 ZZMR 72 ZZ
602 ZZ
682 XZZ692 XZZ
—602 XZZ
MR 63 ZZ683 AZZ
—
693 ZZMR 93 ZZ
603 ZZ
623 ZZ633 ZZ
—MR 74 ZZMR 84 ZZ
684 AZZ
MR 104 BZZ694 ZZ604 ZZ
624 ZZ634 ZZ1
———
—
———
———
———
——
—
———
———
——
————
———
——
———
—
———
———
———
——
—
———
———
——
————
———
——
1.41.41.8
2.0
1.92.72.7
2.62.83.2
3.23.23.2
3.13.74.13.7
3.83.84.2
4.24.64.2
4.24.6
4.8—5.24.8
5.65.25.6
5.66.0
———
1.9
2.12.53.0
2.72.73.0
3.03.83.8
3.73.8—4.1
3.74.0—
4.34.34.3
4.36.0
—4.85.05.2
5.95.65.6
6.07.5
2.62.63.2
3.2
3.63.84.8
4.44.24.8
4.85.85.8
5.45.86.46.8
5.26.26.8
6.87.47.8
8.811.4
6.2—6.88.2
8.49.8
10.4
11.414.0
———
3.5
3.64.35.4
4.24.45.4
5.46.26.2
5.46.2—7.0
5.46.4—
7.37.97.9
8.011.3
—6.37.48.1
8.89.99.9
11.313.8
0.050.050.1
0.1
0.050.150.15
0.080.10.15
0.150.150.15
0.080.150.20.15
0.10.10.15
0.150.20.15
0.150.2
0.1—
0.150.1
0.20.150.2
0.20.3
———
0.1
0.050.150.15
0.080.10.15
0.150.150.15
0.080.15—
0.15
0.10.1—
0.150.150.15
0.150.2
—0.10.10.1
0.150.150.2
0.20.3
0.030.040.09
0.10
0.070.170.33
0.120.160.28
0.300.450.51
0.230.410.560.63
0.200.320.54
0.610.730.87
1.653.38
0.22—
0.360.63
1.041.72.25
3.035.24
———
0.14
0.110.200.38
0.170.230.38
0.290.490.58
0.290.55—
0.83
0.270.45—
0.831.18—
1.663.33
—0.290.561.01
1.421.752.29
3.045.21
Basicbearing
numbers
681MR 31
691
MR 41 X
681 X691 X601 X
682MR 52 B
692
MR 62MR 72
602
682 X692 X
MR 82 X602 X
MR 63683 A
MR 83
693MR 93
603
623633
MR 74MR 74MR 84
684 A
MR 104 B694604
624634
Actual size (2)
Notes (1) The values in parentheses are not based on ISO 15.(2) Actual dimensions of bore and outside diameter only.
Remarks 1. When using bearings with a rotating outer ring, please contact NSK if they are shielded.2. Bearings with double shields (ZZ, ZZ1) are also available with single shields (Z, Z1).
Open type
B
r
r
φD φd
Shielded typeZZ · ZZ1
B1
r1
r1
φD φd
ra
ra
φDa φda φD b
rb
rb
φdb
3534
Single-row deep groove ball bearings
Metric series
600, MR
Bore diameter
5 – 9 mm
Boundary dimensions(mm)
d D B B1 r(1)
r1(1)
min. min.
Basic load ratings(N) {kgf}
Cr Cor Cr Cor
Limiting speeds (min-1)Grease Oil
Open OpenZ·ZZ D·DD ZV·W
5
6
7
8
9
889
1011
111314
1619
101213
15171922
111314
17192226
121416
19222428
172024
2630
2—2.53—
345
56
2.533.5
5667
2.533.5
5679
2.53.54
6789
467
810
—2.5344
545
56
345
5667
345
5679
3.545
6789
567
810
0.1—
0.150.15
—
0.150.20.2
0.30.3
0.150.20.15
0.20.30.30.3
0.150.20.15
0.30.30.30.3
0.150.20.2
0.30.30.30.3
0.20.30.3
(0.6)0.6
—0.10.150.150.15
0.150.20.2
0.30.3
0.10.150.15
0.20.30.30.3
0.10.150.15
0.30.30.30.3
0.10.150.2
0.30.30.30.3
0.20.30.3
(0.6)0.6
310278430430715
7151 0801 330
1 7302 340
495715
1 080
1 7302 2602 3403 300
455540
1 170
1 6102 3403 3004 550
545820
1 610
2 2403 3003 3504 550
1 3301 7203 350
4 5505 100
120131168168276
281430505
670885
218292440
670835885
1 370
201276510
710885
1 3701 970
274385710
9101 3701 4301 970
665840
1 430
1 9702 390
3128444473
73110135
177238
5173
110
177231238335
4755
120
164238335465
5683
164
228335340465
136175340
465520
1213171728
294452
6890
223045
688590
140
212852
7390
140201
283973
93140146201
6886
146
201244
53 00053 00050 00050 00048 000
45 00043 00040 000
36 00032 000
45 00043 00040 000
40 00038 00032 00030 000
43 00040 00040 000
36 00036 00030 00028 000
40 00038 00036 000
36 00034 00028 00028 000
36 00034 00032 000
28 00024 000
—————
—40 00038 000
32 00030 000
—40 00038 000
36 00034 00030 00028 000
——
34 000
28 00032 00028 00022 000
—32 00028 000
28 00028 00024 00022 000
24 00024 00024 000
22 000—
63 00063 00060 00060 00056 000
53 00050 00050 000
43 00040 000
53 00050 00050 000
45 00045 00040 00036 000
50 00048 00045 000
43 00043 00036 00034 000
48 00045 00043 000
43 00040 00034 00034 000
43 00040 00038 000
34 00030 000
Bearing numbers
Open Shielded Seales
Abutment and fillet dimensions(mm)
da db Da Db ra rb
min. max. max. min. max. max.
Mass(g)
Open Shieldedapprox.
MR 85—
MR 95MR 105
—
685695605
625635
MR 106MR 126
686 A
696606626636
MR 117MR 137
687
697607627637
MR 128MR 148
688 A
698608628638
689699609
629639
—MR 85 ZZMR 95 ZZ1MR 105 ZZMR 115 ZZ
685 ZZ695 ZZ1605 ZZ
625 ZZ1635 ZZ1
MR 106 ZZ1MR 126 ZZ
686 A ZZ
696 ZZ1606 ZZ626 ZZ1636 ZZ
MR 117 ZZMR 137 ZZ
687 ZZ1
697 ZZ1607 ZZ1627 ZZ637 ZZ1
MR 128 ZZ1MR 148 ZZ
688 A ZZ1
698 ZZ608 ZZ628 ZZ638 ZZ1
689 ZZ1699 ZZ1609 ZZ
629 ZZ639 ZZ
————VV
—VV—
VVVV
——VV
VVVVVVVV
——VV
VVVVVVVV
—VVVV
VVVVVVVV
VVVVVV
VVVV
—————
—DDDD
DDDD
—DDDD
DDDDDDDD
——DD
DDDDDDDD
—DDDD
DDDDDDDD
DDDDDD
DD—
5.8—6.26.2—
6.26.66.6
7.07.0
7.27.67.2
7.68.08.08.0
8.28.68.2
9.09.09.09.0
9.29.69.6
10.010.010.010.0
10.611.011.0
11.013.0
—5.86.06.06.3
6.26.66.9
7.58.5
7.07.27.4
7.98.28.5
10.5
8.09.08.5
10.29.1
10.512.8
9.09.2
10.2
10.010.512.012.8
11.512.012.0
12.816.1
7.2—7.88.8—
9.811.412.4
14.017.0
8.810.411.8
13.415.017.020.0
9.811.412.8
15.017.020.024.0
10.812.414.4
17.020.022.026.0
15.418.022.8
24.026.0
—7.48.28.49.8
9.911.212.2
13.816.5
9.310.911.7
13.314.816.519.0
10.511.612.7
14.816.519.022.8
11.312.814.2
16.519.020.522.8
15.217.220.5
22.825.6
0.1—0.150.15—
0.150.20.2
0.30.3
0.150.20.15
0.20.30.30.3
0.150.20.15
0.30.30.30.3
0.150.20.2
0.30.30.30.3
0.20.30.3
0.30.6
—0.10.150.150.15
0.150.20.2
0.30.3
0.10.150.15
0.20.30.30.3
0.10.150.15
0.30.30.30.3
0.10.150.2
0.30.30.30.3
0.20.30.3
0.30.6
0.26—
0.500.95—
1.22.453.54
4.958.56
0.561.271.91
3.885.978.15
14
0.621.582.13
5.267.67
12.724
0.711.863.12
7.2312.117.228.3
3.538.45
14.5
19.536.5
—0.340.581.291.5
1.962.53.48
4.868.34
0.681.742.69
3.726.087.94
14
0.722.022.97
5.127.51
12.925
0.972.164.02
7.1812.217.428.6
4.438.33
14.7
19.336
Basicbearing
numbers
MR 85MR 85MR 95MR 105MR 115
685695605
625635
MR 106MR 126
686 A
696606626636
MR 117MR 137
687
697607627637
MR 128MR 148
688 A
698608628638
689699609
629639
Actual size (2)
Notes (1) The values in parentheses are not based on ISO 15.(2) Actual dimensions of bore and outside diameter only.
Remarks 1. When using bearings with a rotating outer ring, please contact NSK if they are sealed or shielded.2. Bearings with double shields (ZZ, ZZ1) are also available with single shields (Z, Z1).3. Bearings with snap rings are also available, please contact NSK.
Open type
B
r
r
φD φd
Shielded typeZZ · ZZ1
B1
r1
r1
φD φd
Non-contactsealed type
VV
B1
r1
r1
φD φd
Contact sealed typeDD
B1
r1
r1
φD φd
ra
ra
φDa φd a
rb
rb
φD b φd b
36 37
Single-row deep groove ball bearings
Inch series
R
Bore diameter
1.016 – 9.525 mm
Boundary dimensions(mm/inch)
d D B B1 rmin.
Basic load ratings(N) {kgf}
Cr Cor Cr Cor
Limiting speeds (min-1)
Grease OilOpen OpenZ·ZZ Z
1.016
1.191
1.397
1.984
2.380
3.175
3.967
4.762
6.350
7.938
9.525
3.175
3.967
4.762
6.350
4.7624.7627.938
6.3507.9389.525
9.52512.700
7.938
7.9389.525
12.700
9.52512.700
15.87519.050
12.700
22.225
0.0400
0.0469
0.0550
0.0781
0.0937
0.1250
0.1562
0.1875
0.2500
0.3125
0.3750
0.1250
0.1562
0.1875
0.2500
0.18750.18750.3125
0.25000.31250.3750
0.37500.5000
0.3125
0.31250.37500.5000
0.37500.5000
0.62500.7500
0.5000
0.8750
0.0469
0.0625
0.0781
0.0937
0.0625—
0.1094
0.09370.10940.1094
0.15620.1719
0.1094
0.10940.12500.1562
0.12500.1250
0.19600.2188
0.1562
0.2188
—
0.0937
0.1094
0.1406
—0.09370.1406
0.10940.14060.1406
0.15620.1719
0.1250
0.12500.12500.1960
0.12500.1875
0.19600.2812
0.1562
0.2812
—
2.380
2.779
3.571
—2.3803.571
2.7793.5713.571
3.9674.366
3.175
3.1753.1754.978
3.1754.762
4.9787.142
3.967
7.142
0.1
0.1
0.1
0.1
0.10.10.15
0.10.10.15
0.30.3
0.1
0.10.10.3
0.10.15
0.30.4
0.15
0.4
80
138
231
310
188143550
283560640
630640
360
360710
1 300
4201 080
1 6102 620
540
3 350
23
35
66
108
6052
175
95179225
218225
149
149270485
204440
6601 060
276
1 410
8
14
24
32
191556
295765
6465
37
3773
133
43110
164267
55
340
2.5
3.5
6.5
11
65.5
18
9.51823
2223
15
152849
2145
68108
28
144
130 000
110 000
90 000
67 000
80 00080 00060 000
67 00060 00053 000
56 00053 000
53 000
53 00050 00043 000
48 00040 000
38 00036 000
40 000
32 000
150 000
130 000
110 000
80 000
95 00095 00071 000
80 00067 00063 000
67 00063 000
63 000
63 00060 00053 000
56 00050 000
45 00043 000
48 000
38 000
Note (1) Actual dimensions of bore and outside diameter only.Remarks 1. When using bearings with a rotating outer ring, please contact NSK if they are shielded.
2. Bearings with double shields (ZZ, ZZS) are also available with single shields (Z, ZS).
Bearing numbers
Open Shielded
Abutment and fillet dimensions(mm)
da db Da Db ra
min. max. max. min. max.
Mass(g)
Open Shieldedapprox.
R 09
R 0
R 1
R 1-4
R 133—R 1-5
R 144R 2-5R 2-6
R 2R 2 A
R 155
R 156R 166R 3
R 168 BR 188
R 4 BR 4 AA
R 1810
R 6
—
R 0 ZZ
R 1 ZZ
R 1-4 ZZ
—R 133 ZZSR 1-5 ZZ
R 144 ZZR 2-5 ZZR 2-6 ZZS
R 2 ZZR 2 A ZZ
R 155 ZZS
R 156 ZZSR 166 ZZR 3 ZZ
R 168 B ZZR 188 ZZ
R 4 B ZZR 4 AA ZZ
R 1810 ZZ
R 6 ZZ
1.9
2.0
2.2
2.8
3.2—3.6
4.04.04.4
5.25.2
4.8
5.65.66.8
7.27.6
8.49.4
9.2
12.6
—
1.9
2.3
3.9
—3.04.1
3.94.34.6
4.84.6
5.5
5.55.96.5
7.07.4
8.49.0
9.0
11.9
2.3
3.1
3.9
5.5
3.9—6.7
5.57.18.3
7.510.7
7.1
7.18.7
10.7
8.711.5
13.816.0
11.5
19.2
—
3.5
4.1
5.9
—4.27.0
5.97.38.2
8.08.2
7.3
7.38.8
11.2
8.911.6
13.816.6
11.6
20.0
0.1
0.1
0.1
0.1
0.10.10.15
0.10.10.15
0.30.3
0.1
0.10.10.3
0.10.15
0.30.4
0.15
0.4
0.04
0.09
0.15
0.35
0.10―0.60
0.250.550.96
1.363.3
0.51
0.390.812.21
0.581.53
4.507.48
1.56
9.02
—
0.11
0.19
0.50
―0.130.72
0.270.721.13
1.393.23
0.56
0.420.852.79
0.622.21
4.439.17
1.48
11
Basicbearing
numbers
R 09
R 0
R 1
R 1-4
R 133R 133R 1-5
R 144R 2-5R 2-6
R 2R 2 A
R 155
R 156R 166R 3
R 168 BR 188
R 4 BR 4 AA
R 1810
R 6
Actual size (1)
Open type
B
r
r
φD φd
Shielded typeZZ · ZZS
B1
r
r
φD φd
ra
ra
φDa φda
ra
ra
φDb φdb
1.191
1.588
1.984
2.380
1.588—
2.779
2.3802.7792.779
3.9674.366
2.779
2.7793.1753.967
3.1753.175
4.9785.558
3.967
5.558
38 39
Metric series
F600, MF
Bore diameter
1 – 4 mm
Boundary dimensions(mm)
d D D1 D2 B B1 C1 C2 r(1)
r1(1)
min. min.
Basic load ratings(N) {kgf}
Cr Cor Cr Cor
Limiting speeds (min-1)
Grease OilOpen OpenZ·ZZ Z
1
1.2
1.5
2
2.5
3
4
34
4
456
556
677
6788
678
899
1013
7789
101112
1316
3.85
4.8
56.57.5
6.16.27.5
7.28.28.5
7.18.59.29.5
7.28.19.2
9.510.210.511.515
8.2—9.2
10.3
11.212.513.5
1518
——
—
56.57.5
6.16.27.5
—8.28.5
7.18.5—9.5
7.28.1—
9.510.610.511.515
—8.29.2
10.3
11.612.513.5
1518
11.6
1.8
1.222.5
1.522.3
2.52.52.8
1.82.52.52.8
222.5
32.5345
2—22.5
344
55
——
—
22.63
2.32.53
—33.5
2.63.5—4
2.53—
44545
—2.534
444
55
0.30.5
0.4
0.40.60.6
0.50.60.6
0.60.60.7
0.50.70.60.7
0.60.50.6
0.70.60.711
0.6—0.60.6
0.611
11
——
—
0.60.80.8
0.60.60.8
—0.60.9
0.80.9—0.9
0.60.8—
0.90.8111
—0.60.61
0.811
11
0.050.1
0.1
0.050.150.15
0.080.10.15
0.150.150.15
0.080.150.20.15
0.10.10.15
0.150.20.150.150.2
0.1—
0.15(0.15)
0.20.150.2
0.20.3
——
—
0.050.150.15
0.080.10.15
—0.150.15
0.080.15—
0.15
0.10.1—
0.150.150.150.150.2
—0.10.1(0.15)
0.150.150.2
0.20.3
80138
138
112237330
169187330
330385385
208385560550
208390560
560570570630
1 300
310255395640
710960960
1 3001 730
2335
35
336998
505898
98127127
74127179175
74130179
179187187218485
115107139225
270345345
485670
814
14
112434
171934
343939
21395756
214057
57585864
133
32264065
739898
133177
2.53.5
3.5
3.57
10
56
10
101313
7.5131818
7.51318
1819192249
12111423
283535
4968
130 000100 000
110 000
100 00085 00075 000
85 00085 00075 000
75 00063 00063 000
71 00063 00060 00060 000
71 00063 00060 000
60 00056 00056 00050 00036 000
60 00060 00056 00053 000
50 00048 00048 000
40 00036 000
150 000120 000
130 000
120 000100 000
90 000
100 000100 000
90 000
90 00075 00075 000
80 00067 00071 00071 000
80 00075 00067 000
67 00067 00067 00060 00043 000
67 00071 00067 00063 000
60 00056 00056 000
48 00043 000
Bearing numbers
Open Shielded Sealed
Abutment and fillet dimensions(mm)
da db ra rb
min. max. max. max.
Mass(g)
Open Shieldedapprox.
F 681F 691
MF 41 X
F 681 XF 691 XF 601 X
F 682MF 52 B
F 692
MF 62MF 72
F 602
F 682 XF 692 X
MF 82 XF 602 X
MF 63F 683 A
MF 83
F 693MF 93
F 603F 623F 633
MF 74—
MF 84F 684
MF 104 BF 694F 604
F 624F 634
F 681F 691
MF 41 X
F 681 XF 691 XF 601 X
F 682MF 52 B
F 692
MF 62MF 72
F 602
F 682 XF 692 X
MF 82 XF 602 X
MF 63F 683 A
MF 83
F 693MF 93
F 603F 623F 633
MF 74MF 74MF 84
F 684
MF 104 BF 694F 604
F 624F 634
——
—
F 681 XZZF 691 XZZF 601 XZZ
F 682 ZZMF 52 B ZZ
F 692 ZZ
—MF 72 ZZ
F 602 ZZ
F 682 XZZF 692 XZZ
—F 602 XZZ
MF 63 ZZF 683 A ZZ
—
F 693 ZZMF 93 ZZ
F 603 ZZF 623 ZZF 633 ZZ
—MF 74 ZZMF 84 ZZ
F 684 ZZ
MF 104 B ZZF 694 ZZF 604 ZZ
F 624 ZZF 634 ZZ1
——
—
———
———
———
————
———
—————
————
———
——
——
—
———
———
———
————
———
—————
————
———
——
1.41.8
2.0
1.92.72.7
2.62.83.2
3.23.23.2
3.13.74.13.7
3.83.84.2
4.24.64.24.24.6
4.8—5.24.8
5.65.25.6
5.66.0
——
—
2.12.53.0
2.72.73.0
—3.83.8
3.73.8—4.1
3.74.0—
4.34.34.34.36.0
—4.85.05.2
5.95.65.6
6.07.5
0.050.1
0.1
0.050.150.15
0.080.10.15
0.150.150.15
0.080.150.20.15
0.10.10.15
0.150.20.150.150.2
0.1—
0.150.1
0.20.150.2
0.20.3
——
—
0.050.150.15
0.080.10.15
—0.150.15
0.080.15—
0.15
0.10.1—
0.150.150.150.150.2
—0.10.10.1
0.150.150.2
0.20.3
0.040.14
0.12
0.090.210.42
0.160.210.35
0.360.520.60
0.250.510.620.74
0.270.370.56
0.700.811.01.853.73
0.29—
0.440.70
1.131.912.53
3.385.73
——
—
0.140.280.52
0.220.270.48
—0.560.71
0.360.68—
0.98
0.330.53—
0.971.341.631.863.59
—0.350.631.14
1.591.962.53
3.535.65
Basicbearing
numbers Actual size (2)
Notes (1) The values in parentheses are not based on ISO 15.(2) Actual dimensions of bore and outside diameter only.
Remarks 1. When using bearings with a rotating outer ring, please contact NSK if they are shielded.2. Bearings with double shields (ZZ, ZZ1) are also available with single shields (Z, Z1).
Open type
BC1
r
r
φD φD1φd
Shielded typeZZ · ZZ1
B1 C2
r1
r1
φD φd φD2
ra
φda
rb
φdb
Deep groove ball bearingswith flanged outer ring
40 41
Metric series
F600, MF
Bore diameter
5 – 9 mm
Boundary dimensions(mm)
d D D1 D2 B B1 C1 C2 r r1
min. min.
Basic load ratings(N) {kgf}
Cr Cor Cr Cor
Limiting speeds (min-1)Grease Oil
Open OpenZ·ZZ D·DD ZV·W
5
6
7
8
9
889
10
111314
1619
101213
15171922
111314
171922
121416
1922
1720
9.2—
10.211.2
12.51516
1822
11.213.215
17192225
12.214.216
192225
13.215.618
2225
1923
—9.2
10.211.6
12.51516
1822
11.213.615
17192225
12.214.616
192225
13.615.618
2225
1923
2—2.53
345
56
2.533.5
5667
2.533.5
567
2.53.54
67
46
—2.534
545
56
345
5667
345
567
3.545
67
56
0.6—0.60.6
0.811
11.5
0.60.61
1.21.21.51.5
0.60.61
1.21.51.5
0.60.81
1.51.5
11.5
—0.60.60.8
111
11.5
0.60.81.1
1.21.21.51.5
0.60.81.1
1.21.51.5
0.80.81.1
1.51.5
1.11.5
0.1—
0.150.15
0.150.20.2
0.30.3
0.150.20.15
0.20.30.30.3
0.150.20.15
0.30.30.3
0.150.20.2
0.30.3
0.20.3
—0.10.150.15
0.150.20.2
0.30.3
0.10.150.15
0.20.30.30.3
0.10.150.15
0.30.30.3
0.10.150.2
0.30.3
0.20.3
310278430430
7151 0801 330
1 7302 340
495715
1 080
1 7302 2602 3403 300
455540
1 170
1 6102 3403 300
545820
1 610
2 2403 300
1 3301 720
120131168168
281430505
670885
218292440
670835885
1 370
201276510
710885
1 370
274385710
9101 370
665840
31284444
73110135
177238
5173
110
177231238335
4755
120
164238335
5683
164
228335
136175
12131717
294452
6890
223045
688590
140
212852
7390
140
283973
93140
6886
53 00053 00050 00050 000
45 00043 00040 000
36 00032 000
45 00043 00040 000
40 00038 00032 00030 000
43 00040 00040 000
36 00036 00030 000
40 00038 00036 000
36 00034 000
36 00034 000
————
―40 00038 000
32 00030 000
—40 00038 000
36 00034 00030 00028 000
——
34 000
28 00032 00028 000
—32 00030 000
28 00028 000
24 00024 000
63 00063 00060 00060 000
53 00050 00050 000
43 00040 000
53 00050 00050 000
45 00045 00040 00036 000
50 00048 00045 000
43 00043 00036 000
48 00045 00043 000
43 00040 000
43 00040 000
Bearing numbers
Open Shielded Sealed
Abutment and fillet dimensions(mm)
da db ra rb
min. max. max. max.
Mass(g)
Open Shieldedapprox.
MF 85—
MF 95MF 105
F 685F 695F 605
F 625F 635
MF 106MF 126
F 686 A
F 696F 606F 626F 636
MF 117MF 137
F 687
F 697F 607F 627
MF 128MF 148
F 688 A
F 698F 608
F 689F 699
MF 85MF 85MF 95MF 105
F 685F 695F 605
F 625F 635
MF 106MF 126
F 686 A
F 696F 606F 626F 636
MF 117MF 137
F 687
F 697F 607F 627
MF 128MF 148
F 688 A
F 698F 608
F 689F 699
—MF 85 ZZMF 95 ZZ1MF 105 ZZ
F 685 ZZF 695 ZZF 605 ZZ
F 625 ZZ1F 635 ZZ1
MF 106 ZZ1MF 126 ZZ
F 686 A ZZ
F 696 ZZ1F 606 ZZF 626 ZZ1F 636 ZZ
MF 117 ZZMF 137 ZZ
F 687 ZZ1
F 697 ZZ1F 607 ZZ1F 627 ZZ
MF 128 ZZ1MF 148 ZZ
F 688 A ZZ1
F 698 ZZF 608 ZZ
F 689 ZZ1F 699 ZZ1
————
—VV—
VVVV
——VV
VVVVVVVV
——VV
VVVVVV
—VVVV
VVVV
VVVV
————
—DDDD
DDDD
—DDDD
DDDDDDDD
——DD
DDDDDD
—DDDD
DDDD
DDDD
5.8—6.26.2
6.26.66.6
7.07.0
7.27.67.2
7.68.08.08.0
8.28.68.2
9.09.09.0
9.29.69.6
10.010.0
10.611.0
—5.86.06.0
6.26.66.9
7.58.5
7.07.27.4
7.98.28.5
10.5
8.09.08.5
10.29.1
10.5
9.09.2
10.2
10.010.5
11.512.0
0.1—
0.150.15
0.150.20.2
0.30.3
0.150.20.15
0.20.30.30.3
0.150.20.15
0.30.30.3
0.150.20.2
0.30.3
0.20.3
—0.10.150.15
0.150.20.2
0.30.3
0.10.150.15
0.20.30.30.3
0.10.150.15
0.30.30.3
0.10.150.2
0.30.3
0.20.3
0.33—0.591.05
1.372.793.9
5.379.49
0.651.382.25
4.346.589.09
14.6
0.721.72.48
5.658.66
14.2
0.822.093.54
8.3513.4
3.979.51
—0.410.661.46
2.182.843.85
5.39.49
0.771.943.04
4.266.619.09
14.7
0.822.233.37
5.658.66
14.2
1.152.394.47
8.313.5
4.919.51
Basicbearing
numbers Actual size (1)
Note (1) Actual dimensions of bore and outside diameter only.Remarks 1. When using bearings with a rotating outer ring, please contact NSK if they are shielded.
2. Bearings with double shields (ZZ, ZZ1) are also available with single shields (Z, Z1).
Open type
B
r
r
φD φd φD1
C1
Shielded typeZZ · ZZ1
B1 C2
r1
r1
φD φd φD2
Non-contactsealed type
VV
B1 C2
r1
r1
φD φd φD2
Contact sealed typeDD
B1 C2
r1
r1
φD φd φD2
ra
φda
rb
φdb
Deep groove ball bearingswith flanged outer ring
42 43
Deep groove ball bearingswith flanged outer ring
Inch series
FR
Bore diameter
1.191 – 9.525 mm
Boundary dimensions(mm/inch)
d D D1 B B1 C1 C2 rmin.
Basic load ratings(N) {kgf}
Cr Cor Cr Cor
Limiting speeds (min-1)
Grease OilOpen OpenZ·ZZ Z
1.191
1.397
1.984
2.380
3.175
3.967
4.762
6.350
7.938
9.525
3.967
4.762
6.350
4.7624.7627.938
6.3507.9389.5259.525
7.938
7.9389.525
12.700
9.52512.70015.875
12.700
22.225
5.156
5.944
7.518
5.9445.9449.119
7.5189.119
10.71911.176
9.119
9.11910.71914.351
10.71913.89417.526
13.894
24.613
0.0469
0.0550
0.0781
0.0937
0.1250
0.1562
0.1875
0.2500
0.3125
0.3750
0.1562
0.1875
0.2500
0.18750.18750.3125
0.25000.31250.37500.3750
0.3125
0.31250.37500.5000
0.37500.50000.6250
0.5000
0.8750
0.203
0.234
0.296
0.2340.2340.359
0.2960.3590.4220.440
0.359
0.3590.4220.565
0.4220.5470.690
0.547
0.969
0.0625
0.0781
0.0937
0.0625—
0.1094
0.09370.10940.10940.1562
0.1094
0.10940.12500.1960
0.12500.12500.1960
0.1562
0.2812
0.0937
0.1094
0.1406
—0.09370.1406
0.10940.14060.14060.1562
0.1250
0.12500.12500.1960
0.12500.18750.1960
0.1562
0.2812
0.013
0.023
0.023
0.018—
0.023
0.0230.0230.0230.030
0.023
0.0230.0230.042
0.0230.0230.042
0.031
0.062
0.031
0.031
0.031
—0.0310.031
0.0310.0310.0310.030
0.036
0.0360.0310.042
0.0360.0450.042
0.031
0.062
1.588
1.984
2.380
1.588—
2.779
2.3802.7792.7793.967
2.779
2.7793.1754.978
3.1753.1754.978
3.967
7.142
2.380
2.779
3.571
—2.3803.571
2.7793.5713.5713.967
3.175
3.1753.1754.978
3.1754.7624.978
3.967
7.142
0.330
0.580
0.580
0.460—
0.580
0.5800.5800.5800.760
0.580
0.5800.5801.070
0.5800.5801.070
0.790
1.570
0.790
0.790
0.790
—0.7900.790
0.7900.7900.7900.760
0.910
0.9100.7901.070
0.9101.1401.070
0.790
1.570
0.1
0.1
0.1
0.10.10.15
0.10.10.150.3
0.1
0.10.10.3
0.10.150.3
0.15
0.4
138
231
310
188143550
283560640630
360
360710
1 300
4201 0801 610
540
3 350
35
66
108
6052
175
95179225218
149
149270485
204440660
276
1 410
14
24
32
191556
29576564
37
3773
133
43110164
55
340
3.5
6.5
11
65.5
18
9.5182322
15
152849
214568
28
144
110 000
90 000
67 000
80 00080 00060 000
67 00060 00053 00056 000
53 000
53 00050 00043 000
48 00040 00038 000
40 000
32 000
130 000
110 000
80 000
95 00095 00071 000
80 00067 00063 00067 000
63 000
63 00060 00053 000
56 00050 00045 000
48 000
38 000
Bearing numbers
Open Shielded
Abutment and fillet dimensions(mm)
da db ra
min. max. max.
Mass(g)
Open Shieldedapprox.
FR 0
FR 1
FR 1-4
FR 133—
FR 1-5
FR 144FR 2-5FR 2-6FR 2
FR 155
FR 156FR 166FR 3
FR 168 BFR 188FR 4 B
FR 1810
FR 6
FR 0 ZZ
FR 1 ZZ
FR 1-4 ZZ
—FR 133 ZZSFR 1-5 ZZ
FR 144 ZZFR 2-5 ZZFR 2-6 ZZSFR 2 ZZ
FR 155 ZZS
FR 156 ZZSFR 166 ZZFR 3 ZZ
FR 168 BZZFR 188 ZZFR 4 BZZ
FR 1810 ZZ
FR 6 ZZ
FR 0
FR 1
FR 1-4
FR 133FR 133FR 1-5
FR 144FR 2-5FR 2-6FR 2
FR 155
FR 156FR 166FR 3
FR 168 BFR 188FR 4 B
FR 1810
FR 6
2.0
2.2
2.8
3.2—3.6
4.04.04.45.2
4.8
5.65.66.8
7.27.68.4
9.2
12.6
1.9
2.3
3.9
—3.04.1
3.94.34.64.8
5.5
5.55.96.5
7.07.48.4
9.0
11.9
0.1
0.1
0.1
0.10.10.15
0.10.10.150.3
0.1
0.10.10.3
0.10.150.3
0.15
0.4
0.11
0.20
0.41
0.13―
0.68
0.310.621.041.51
0.59
0.470.902.97
0.661.644.78
1.71
10.1
0.16
0.25
0.58
—0.190.82
0.350.811.251.55
0.67
0.530.983.09
0.752.494.78
1.63
12.1
Basicbearing
numbers Actual size (1)
Note (1) Actual dimensions of bore and outside diameter only.Remarks 1. When using bearings with a rotating outer ring, please contact NSK if they are shielded.
2. Bearings with double shields (ZZ, ZZS) are also available with single shields (Z, ZS).
Open type
C1
r
r
φD φd φD1
B
Shielded typeZZ · ZZS
B1 C2
r
r
φD φd φD1
ra
φda
ra
φdb
44 45
RW 09
RW 0
RW 1
RW 1-4
RW 133RW 133RW 1-5
RW 144RW 2-5RW 2-6RW 2
RW 155
RW 156RW 166RW 3
RW 168 BRW 188RW 4 B
RW 1810
RW 6
RW 09
RW 0
RW 1
RW 1-4
RW 133—
RW 1-5
RW 144RW 2-5RW 2-6RW 2
RW 155
RW 156RW 166RW 3
RW 168 BRW 188RW 4 B
RW 1810
RW 6
—
RW 0 ZZ
RW 1 ZZ
RW 1-4 ZZ
—RW 133 ZZSRW 1-5 ZZ
RW 144 ZZRW 2-5 ZZRW 2-6 ZZSRW 2 ZZ
RW 155 ZZS
RW 156 ZZSRW 166 ZZRW 3 ZZ
RW 168 BZZRW 188 ZZRW 4 BZZ
RW 1810 ZZ
—
Deep groove ball bearingswith extended inner ring
Inch series
RW
Bore diameter
1.016 – 9.525 mm
Boundary dimensions(mm/inch)
d D B B1 C C1 rmin.
Basic load ratings(N) {kgf}
Cr Cor Cr Cor
Limiting speeds (min-1)
Grease OilOpen OpenZ·ZZ Z
1.016
1.191
1.397
1.984
2.380
3.175
3.967
4.762
6.350
7.938
9.525
3.175
3.967
4.762
6.350
4.7624.7627.938
6.3507.9839.5259.525
7.938
7.9389.525
12.700
9.52512.70015.875
12.700
22.225
1.984
2.380
2.779
3.175
2.380—
3.571
3.1753.5713.5714.762
3.571
3.5713.9674.762
3.9673.9675.771
4.762
7.142
—
3.175
3.571
4.366
—3.1754.366
3.5714.3664.3664.762
3.967
3.9673.9675.771
3.9675.5585.771
4.762
—
1.191
1.588
1.984
2.380
1.588—
2.779
2.3802.7792.7793.967
2.779
2.7793.1753.967
3.1753.1754.978
3.967
5.558
—
2.380
2.779
3.571
—2.3803.571
2.7793.5713.5713.967
3.175
3.1753.1754.978
3.1754.7624.978
3.967
—
0.1
0.1
0.1
0.1
0.10.10.15
0.10.10.150.3
0.1
0.10.10.3
0.10.150.3
0.15
0.4
80
138
231
310
188143550
283560640630
360
360710
1 300
4201 0801 610
540
3 350
23
35
66
108
6052
175
95179225218
149
149270485
204440660
276
1 410
8
14
24
32
191556
29576564
37
3773
133
43110164
55
340
2.5
3.5
6.5
11
65.5
18
9.5182322
15
152849
214568
28
144
130 000
110 000
90 000
67 000
80 00080 00060 000
67 00060 00053 00056 000
53 000
53 00050 00043 000
48 00040 00038 000
40 000
32 000
150 000
130 000
110 000
80 000
95 00095 00071 000
80 00067 00063 00067 000
63 000
63 00060 00053 000
56 00050 00045 000
48 000
38 000
Bearing numbers
Open Shielded
Abutment and fillet dimensions(mm)
da db Da Db ra
min. max. max. min. max.
Mass(g)
Open Shieldedapprox.
1.9
2.0
2.2
2.8
3.2—
3.6
4.04.04.45.2
4.8
5.65.66.8
7.27.68.4
9.2
12.6
—
1.9
2.3
3.9
—3.04.1
3.94.34.64.8
5.5
5.55.96.5
7.07.48.4
9.0
—
2.3
3.1
3.9
5.5
3.9—
6.7
5.57.18.37.5
7.1
7.18.7
10.7
8.711.513.8
11.5
19.2
—
3.5
4.1
5.9
—4.27.0
5.97.38.28.0
7.3
7.38.8
11.2
8.911.613.8
11.6
—
0.1
0.1
0.1
0.1
0.10.10.15
0.10.10.150.3
0.1
0.10.10.3
0.10.150.3
0.15
0.4
0.05
0.11
0.17
0.46
0.12―
0.63
0.300.741.01.4
0.56
0.440.822.33
0.621.74.72
1.9
10
—
0.16
0.25
0.46
—0.170.73
0.330.741.11.3
0.62
0.490.872.90
0.662.14.62
1.6
—
Basicbearing
numbers Actual size (1)
Note (1) Actual dimensions of bore and outside diameter only.Remarks 1. When using bearings with a rotating outer ring, please contact NSK if they are shielded.
2. Bearings with double shields (ZZ, ZZS) are also available with single shields (Z, ZS).
Open type
C
B
r
r
φD φd
Shielded typeZZ · ZZS
C1
B1
r
r
φD φd
ra
φDa φda φDb φdb
ra
0.0400
0.0469
0.0550
0.0781
0.0937
0.1250
0.1562
0.1875
0.2500
0.3125
0.3750
0.1250
0.1562
0.1875
0.2500
0.18750.18750.3125
0.25000.31250.37500.3750
0.3125
0.31250.37500.5000
0.37500.50000.6250
0.5000
0.8750
0.0781
0.0937
0.1094
0.1250
0.0937—
0.1406
0.12500.14060.14060.1875
0.1406
0.14060.15620.1875
0.15620.15620.2272
0.1875
0.2812
—
0.1250
0.1406
0.1719
—0.12500.1719
0.14060.17190.17190.1875
0.1562
0.15620.15620.2272
0.15620.21880.2272
0.1875
—
0.0469
0.0625
0.0781
0.0937
0.0625—
0.1094
0.09370.10940.10940.1562
0.1094
0.10940.12500.1562
0.12500.12500.1960
0.1562
0.2188
—
0.0937
0.1094
0.1406
—0.09370.1406
0.10940.14060.14060.1562
0.1250
0.12500.12500.1960
0.12500.18750.1960
0.1562
—
46 47
FRW 0
FRW 1
FRW 1-4
FRW 133FRW 133FRW 1-5
FRW 144FRW 2-5FRW 2-6FRW 2
FRW 155
FRW 156FRW 166FRW 3
FRW 168 BFRW 188FRW 4 B
FRW 1810
FRW 0 ZZ
FRW 1 ZZ
FRW 1-4 ZZ
—FRW 133 ZZSFRW 1-5 ZZ
FRW 144 ZZFRW 2-5 ZZFRW 2-6 ZZSFRW 2 ZZ
FRW 155 ZZS
FRW 156 ZZSFRW 166 ZFRW 3 ZZ
FRW 168 BZZFRW 188 ZZFRW 4 BZZ
FRW 1810 ZZ
Inch series
FRW
Bore diameter
1.191 – 7.938 mm
Boundary dimensions(mm/inch)
d D D1 B B1 C C1 C2 C3 rmin.
Basic load ratings(N) {kgf}
Cr Cor Cr Cor
Limiting speeds (min-1)
Grease OilOpen OpenZ·ZZ Z
1.191
1.397
1.984
2.380
3.175
3.967
4.762
6.350
7.938
3.967
4.762
6.350
4.7624.7627.938
6.3507.9389.5259.525
7.938
7.9389.525
12.700
9.52512.70015.875
12.700
5.156
5.944
7.518
5.9445.9449.119
7.5189.119
10.71911.176
9.119
9.11910.71914.351
10.71913.89417.526
13.894
2.380
2.779
3.175
2.380—
3.571
3.1753.5713.5714.762
3.571
3.5713.9674.762
3.9673.9675.771
4.762
3.175
3.571
4.366
—3.1754.366
3.5714.3664.3664.762
3.967
3.9673.9675.771
3.9675.5585.771
4.762
1.588
1.984
2.380
1.588—
2.779
2.3802.7792.7793.967
2.779
2.7793.1753.967
3.1753.1754.978
3.967
2.380
2.779
3.571
—2.3803.571
2.7793.5713.5713.967
3.175
3.1753.1754.978
3.1754.7624.978
3.967
0.330
0.580
0.580
0.460―
0.580
0.5800.5800.5800.760
0.580
0.5800.5801.070
0.5800.5801.070
0.790
0.790
0.790
0.790
—0.7900.790
0.7900.7900.7900.760
0.910
0.9100.7901.070
0.9101.1401.070
0.790
0.1
0.1
0.1
0.10.10.15
0.10.10.150.3
0.1
0.10.10.3
0.10.150.3
0.15
138
231
310
188143550
283560640630
360
360710
1 300
4201 0801 610
540
35
66
108
6052
175
95179225218
149
149270485
204440660
276
14
24
32
191556
29576564
37
3773
133
43110164
55
3.5
6.5
11
65.5
18
9.5182322
15
152849
214568
28
110 000
90 000
67 000
80 00080 00060 000
67 00060 00053 00056 000
53 000
53 00050 00043 000
48 00040 00038 000
40 000
130 000
110 000
80 000
95 00095 00071 000
80 00067 00063 00067 000
63 000
63 00060 00053 000
56 00050 00045 000
48 000
Bearing numbers
Open Shielded
Abutment and fillet dimensions(mm)
da db ra
min. max. max.
Mass(g)
Open Shieldedapprox.
FRW 0
FRW 1
FRW 1-4
FRW 133—
FRW 1-5
FRW 144FRW 2-5FRW 2-6FRW 2
FRW 155
FRW 156FRW 166FRW 3
FRW 168 BFRW 188FRW 4 B
FRW 1810
2.0
2.2
2.8
3.2—3.6
4.04.04.45.2
4.8
5.65.66.8
7.27.68.4
9.2
1.9
2.3
3.9
—3.04.1
3.94.34.64.8
5.5
5.55.96.5
7.07.48.4
9.0
0.1
0.1
0.1
0.10.10.15
0.10.10.150.3
0.1
0.10.10.3
0.10.150.3
0.15
0.14
0.24
0.59
0.17—
0.83
0.440.931.31.8
0.73
0.581.23.1
0.702.15.08
2.3
0.19
0.32
0.59
—0.220.93
0.470.931.41.7
0.79
0.631.23.2
0.792.54.98
2.1
Basicbearing
numbers Actual size (1)
Note (1) Actual dimensions of bore and outside diameter only.Remarks 1. When using bearings with a rotating outer ring, please contact NSK if they are shielded.
2. Bearings with double shields (ZZ, ZZS) are also available with single shields (Z, ZS).
Open type
C
B
C2
r
r
φD φdφD1
Shielded typeZZ · ZZS
C1
B1
C3
r
r
φD φdφD1φda
ra ra
φdb
0.1562
0.1875
0.2500
0.18750.18750.3125
0.25000.31250.37500.3750
0.3125
0.31250.37500.5000
0.37500.50000.6250
0.5000
0.203
0.234
0.296
0.2340.2340.359
0.2960.3590.4220.440
0.359
0.3590.4220.565
0.4220.5470.690
0.547
0.0469
0.0550
0.0781
0.0937
0.1250
0.1562
0.1875
0.2500
0.3125
0.1250
0.1406
0.1719
—0.12500.1719
0.14060.17190.17190.1875
0.1562
0.15620.15620.2272
0.15620.21880.2272
0.1875
0.0625
0.0781
0.0937
0.0625—
0.1094
0.09370.10940.10940.1562
0.1094
0.10940.12500.1562
0.12500.12500.1960
0.1562
0.0937
0.1094
0.1250
0.0937—
0.1406
0.12500.14060.14060.1875
0.1406
0.14060.15620.1875
0.15620.15620.2272
0.1875
0.0937
0.1094
0.1406
—0.09370.1406
0.10940.14060.14060.1562
0.1250
0.12500.12500.1960
0.12500.18750.1960
0.1562
0.013
0.023
0.023
0.018―
0.023
0.0230.0230.0230.030
0.023
0.0230.0230.042
0.0230.0230.042
0.031
0.031
0.031
0.031
―0.0310.031
0.0310.0310.0310.030
0.036
0.0360.0310.042
0.0360.0450.042
0.031
Deep groove ball bearingswith extended inner ring, flanged
48 49
Ball bearings for synchros
Inch series
SR · · X
Bore diameter
3.175 – 4.762 mm
Boundary dimensions(mm/inch)
d D B B1 rmin.
Basic load ratings(N) {kgf}
Cr Cor Cr Cor
Limiting speeds (mi n -1)
Grease OilOpen Open
ZS·ZZS ZS
3.175
4.762
9.52510.10010.414
10.10010.41412.700
12.70014.46322.225
———
——
2.779
—4.9784.978
2.7792.3802.380
2.7792.779
—
3.9674.9784.978
0.10.10.1
0.10.10.1
0.10.30.3
241264264
305305605
6051 1101 260
768787
119119216
216385495
252727
313162
62113128
8.09.09.0
121222
224050
53 00063 00063 000
53 00053 00050 000
50 00043 00043 000
63 00075 00075 000
63 00063 00060 000
60 00053 00053 000
Bearing numbers
Open Single shielded Double shielded
Abutment and fillet dimensions(mm)
da db Da ra
min. max. max. max.
Mass(g)
approx.
———
——
SR 186X1
—SR 3X31SR 3X23
SR 2X52 ZSSR 144X100 ZSSR 174X5 ZS
SR 156X100 ZSSR 156X101 ZS
—
SR 186X2 ZSSR 3X31 ZSSR 3X23 ZS
SR 2X52 ZZSSR 144X100 ZZSSR 174X5 ZZS
SR 156X100 ZZSSR 156X101 ZZS
—
SR 186X2 ZZSSR 3X31 ZZSSR 3X23 ZZS
3.93.93.9
5.55.55.6
5.66.56.8
3.93.93.9
5.55.5―
5.96.58.4
8.79.39.6
9.39.6
11.9
11.912.920.6
0.10.10.1
0.10.10.1
0.10.30.3
1.01.21.2
1.01.11.8
2.64.0
13
Remark These bearings are made of stainless steel.
Open type
B
r
r
φD φd
Shielded typeZZS
B1
r
r
φD φd
rara
ra
φDa φda
ra
rara
φDa φd b
0.1250
0.1875
0.37500.39760.4100
0.39760.41000.5000
0.50000.56940.8750
———
——
0.1094
—0.19600.1960
0.10940.09370.0937
0.10940.1094
—
0.15620.19600.1960
50 51
Angular contact ball bearings
Extra-thin-section deep groove ball bearings
Metric series
700C
Bore diameter
4 – 9 mm
Metric series
SMT
Bore diameter
10 – 15 mm
Boundary dimensions(mm)
d D B r r1
min. min.
Basic load ratings(N) {kgf}
Cr Cor Cr Cor
Limiting speeds (min-1)
Grease Oil
4
5
6
7
8
9
16
16
1719
19
2224
24
5
5
66
6
78
7
0.3
0.3
0.30.3
0.3
0.30.3
0.3
0.15
0.15
0.150.15
0.15
0.150.15
0.15
1 700
1 700
2 0302 390
2 390
3 5503 600
3 600
660
660
7951 000
1 000
1 5401 600
1 600
174
174
204243
243
360365
365
67
66
81102
102
157164
164
53 000
53 000
50 00048 000
48 000
43 00040 000
40 000
71 000
71 000
67 00063 000
63 000
56 00053 000
53 000
Bearingnumbers
Abutment and fillet dimensions(mm)
da Da ra
min. max. max.
Mass(g)
approx.
734C
725C
706C726C
707C
708C728C
709C
6.5
7.5
8.58.5
9.5
10.510.5
11.5
13.5
13.5
14.516.5
16.5
19.521.5
21.5
0.3
0.3
0.30.3
0.3
0.30.3
0.3
5.3
4.5
5.57.8
7.4
1216
14
Remarks 1. The tolerance classes for this type of bearing are classes 5 and 4.2. Please contact NSK regarding separable bearings or inch series bearings.
Boundary dimensions(mm)
d D B rmin.
Basic load ratings(N) {kgf}
Cr Cor Cr Cor
Limiting speeds (min-1)
Grease Oil
10
15
15
20
3
3.5
0.15
0.15
815
800
410
470
83
82
42
48
36 000
30 000
43 000
36 000
Bearingnumbers
Abutment and fillet dimensions(mm)
da Da ra
min. max. max.
Mass(g)
approx.
SMT 1510
SMT 2015
11.2
16.2
13.8
18.8
0.15
0.15
1.4
2.2
Remarks 1. These bearings are made of stainless steel.2. The tolerance classes for this type of bearing are nomal and class 6.3. The radial internal clearance for this type of bearing is specified by ISO 5593 Rolling bearings-Radial internal clearance.
Br1
r
r
φD φd
Br
r
φD φd
rara
rara
φda φDa
rara
rara
φDa φda
53
Appendices
Page
Appendix Table 1 Conversion from SI (International Units)
system ...................................................... 54 – 55
Appendix Table 2 N – kgf Force conversion table ....................... 56
Appendix Table 3 Kg – 1b Mass conversion table ....................... 57
Appendix Table 4 °C – °F Temperature conversion table ........... 58
Appendix Table 5 Viscosity conversion table .............................. 59
Appendix Table 6 Inch-mm Dimension conversion table ............ 60
Appendix Table 7 Hardness conversion table ............................. 61
Appendix Table 8 Values of standard tolerance grades IT ... 62 – 63
Appendix Table 9 Physical and mechanical properties
of materials ...................................................... 64
5554
Appendix Table 1 Conversion from SI (International Units) System
Comparison of SI, CGS, and Engineering Units
Conversion Factors from SI Units
UnitSystem
Units
SI
Length Mass Time Temp. Accelera-tion
m kg s K m/s2
cm
m
g
kgf・s2/m
s
s
℃
℃
Gal
m/s2
dyn
kgf
dyn/cm2
kgf/m2
dyn/cm2
kgf/m2
erg
kgf・m
erg/s
kgf・m/s
Force
N
Stress
Pa
Pressure
Pa
Energy
J
Power
W
CGS System
EngineeringUnit System
ParameterSI Units Units other than SI Conversion Factors from
SI UnitsNames of Units Name of UnitsSymbols Symbols
Angle Radian
Length Meter
Area Square meter
Volume Cubic meter
Time
Frequency
Speed of Rotation
Speed
Acceleration
Mass
Force
Torque or Moment
Stress
Second
Hertz
Revolution per second
Meter per second
Meter per second per second
Kilogram
Newton
Newton・meter
Pascal
rad
m
m2
m3
s
Hz
s–1
m/s
m/s2
kg
N
N・m
Pa(N/m2)
DegreeMinuteSecond
MicronAngstrom
AreHectare
LiterDeciliter
MinuteHourDay
Cycle
Revolution per minute
Kilometer per hourKnot
Galg
Ton
Kilogram-forceTon-forceDyne
Kilogram-force meter
Kilogram-force per square centimeterKilogram-force per square millimeter
°′″
aha
l,Ldl,dL
minhd
s–1
rpm
km/hkn
Galg
t
kgftfdyn
kgf・m
kgf/cm2
kgf/mm2
180/π10 800/π648 000/π
106
1010
10–2
10–4
103
104
1/601/3 6001/86 400
1
60
3 600/1 0003 600/1 852
102
1/9.806 65
10–3
1/9.806 651/(9.806 65×103)105
1/9.806 65
1/(9.806 65×104)1/(9.806 65×106)
Note (1) The conversion from TK into θ°C is θ= T―273.15 but for a temperature difference, it is dT = dθ. However, dT and dθ representtemperature differences measured using the Kelvin and Celsius scales respectively.
Remarks The names and symbols in ( ) are equivalent to those directly above them or on their left.Example of conversion 1 N = 1/9.806 65 kgf
Prefixes Used In SI System
Multiples Prefix Symbols Multiples Prefix Symbols
1018
1015
1012
109
106
103
102
10
ExaPetaTera
GigaMegaKilo
HectoDeca
EPT
GMk
hda
10–1
10–2
10–3
10–6
10–9
10–12
10–15
10–18
DeciCentiMilli
MicroNanoPico
FemtoAto
dcm
p
np
fa
Conversion Factors from SI Units (Continued)
ParameterSI Units Units other than SI Conversion factors
from SI UnitsNames of Units Names of UnitsSymbols Units
Pressure Pascal(Newton per square meter)
Energy Joule(Newton・meter)
Work
Viscosity,Viscosity Index
Watt(Joule per second)
Pascal second
Pa(N/m2)
J(N·m)
W(J/s)
Pa·s
Kilogram-force per square meterWater ColumnMercury ColumnTorrBarAtmosphere
ErgCalorie (International)Kilogram-force meterKilowatt hourFrench horse power hour
Kilogram-force meter per secondKilocalorie per hourFrench horse power
Poise
kgf/m2
mH2OmmHgTorrbaratm
ergcal IT
kgf·mkW ·hPS··h
kgf·m/skcal/hPS
P
1/9.806 651/(9.806 65×103)760/(1.013 25×105)760/(1.013 25×10 5)10–5
1/(1.013 25×105)
107
1/4.186 81/9.806 651/(3.6×106)~~3.776 72×10–7
1/9.806 651/1.163~~1/735.498 8
10
Kinematic Viscosity,Kinematic Viscosity Index
Square meter per second m2/s StokesCentistokes
StcSt
104
106
Temperature Kelvin, Degree celsius K,℃ Degree ℃ (See Note (1))
Electric Current,Magnetomotive Force Ampere A Ampere A 1
Voltage,Electromotive Force Volt V (Watts per ampere) (W/A) 1
Magnetic FieldStrength Ampere per meter A/m Oersted Oe 4π/103
Magnetic FluxDensity
Tesla T GaussGamma
Gsγ
104
109
Electrical Resistance Ohm Ω (Volts per ampere) (V/A) 1
p
A°
5756
6768697071
7273747576
7778798081
8283848586
8788899091
9293949596
979899
3435363738
3940414243
4445464748
4950515253
5455565758
5960616263
646566
9.806619.61329.42039.22749.033
58.84068.64778.45388.26098.066
107.87117.68127.49137.29147.10
156.91166.71176.52186.33196.13
205.94215.75225.55235.36245.17
254.97264.78274.59284.39294.20
304.01313.81323.62
12345
6789
10
1112131415
1617181920
2122232425
2627282930
313233
Appendix Table 2 N - kgf Conversion Table
N
0.10200.20390.30590.40790.5099
0.61180.71380.81580.91771.0197
1.12171.22371.32561.42761.5296
1.63151.73351.83551.93752.0394
2.14142.24342.34532.44732.5493
2.65132.75322.85522.95723.0591
3.16113.26313.3651
kgf
1 N=0.1019716 kgf1 kgf=9.80665 N
N
333.43343.23353.04362.85372.65
382.46392.27402.07411.88421.69
431.49441.30451.11460.91470.72
480.53490.33500.14509.95519.75
529.56539.37549.17558.98568.79
578.59588.40598.21608.01617.82
627.63637.43647.24
3.46703.56903.67103.77293.8749
3.97694.07894.18084.28284.3848
4.48684.58874.69074.79274.8946
4.99665.09865.20065.30255.4045
5.50655.60845.71045.81245.9144
6.01636.11836.22036.32226.4242
6.52626.62826.7301
kgf N
657.05666.85676.66686.47696.27
706.08715.89725.69735.50745.31
755.11764.92774.73784.53794.34
804.15813.95823.76833.57843.37
853.18862.99872.79882.60892.41
902.21912.02921.83931.63941.44
951.25961.05970.86
6.83216.93417.03607.13807.2400
7.34207.44397.54597.64797.7498
7.85187.95388.05588.15778.2597
8.36178.46368.56568.66768.7696
8.87158.97359.07559.17749.2794
9.38149.48349.58539.68739.7893
9.89129.9932
10.095
kgf
For example, to convert 10 N into kgf, read the figure in the right kgfcolumn adjacent to the 10 in the center column in the 1st block. Thismeans that 10 N is 1.01997 kgf. To convert 10 kgf into N, read thefigure in the left N column of the same row, which indicates that theanswer is 98.066 N.
How to use this table
6768697071
7273747576
7778798081
8283848586
8788899091
9293949596
979899
3435363738
3940414243
4445464748
4950515253
5455565758
5960616263
646566
0.4540.9071.3611.8142.268
2.7223.1753.6294.0824.536
4.9905.4435.8976.3506.804
7.2577.7118.1658.6189.072
9.5259.979
10.43310.88611.340
11.79312.24712.70113.15413.608
14.06114.51514.969
12345
6789
10
1112131415
1617181920
2122232425
2627282930
313233
Appendix Table 3 kg–lb Conversion Table
kg
2.2054.4096.6148.818
11.023
13.22815.43217.63719.84222.046
24.25126.45528.66030.86533.069
35.27437.47939.68341.88844.092
46.29748.50250.70652.91155.116
57.32059.52561.72963.93466.139
68.34370.54872.753
lb
1 kg=2.2046226 1b1 1b=0.45359237 kg
kg
15.42215.87616.32916.78317.237
17.69018.14418.59719.05119.504
19.95820.41220.86521.31921.772
22.22622.68023.13323.58724.040
24.49424.94825.40125.85526.308
26.76227.21627.66928.12328.576
29.03029.48429.937
74.95777.16279.36681.57183.776
85.98088.18590.39092.59494.799
97.00399.208
101.41103.62105.82
108.03110.23112.44114.64116.84
119.05121.25123.46125.66127.87
130.07132.28134.48136.69138.89
141.10143.30145.51
lb kg
30.39130.84431.29831.75132.205
32.65933.11233.56634.01934.473
34.92735.38035.83436.28736.741
37.19537.64838.10238.55539.009
39.46339.91640.37040.82341.277
41.73042.18442.63843.09143.545
43.99844.45244.906
147.71149.91152.12154.32156.53
158.73160.94163.14165.35167.55
169.76171.96174.17176.37178.57
180.78182.98185.19187.39189.60
191.80194.01196.21198.42200.62
202.83205.03207.23209.44211.64
213.85216.05218.26
lb
For example, to convert 10 kg into lb, read the figure in the right lbcolumn adjacent to the 10 in the center column in the 1st block. Thismeans that 10 kg is 22.046 lb. To convert 10 lb into kg, read the figurein the left kg column of the same row, which indicates that theanswer is 4.536 kg.
How to use this table
5958
23456
789
1011
1213141516
1718192021
2223242526
2728293031
323334
3536373839
4041424344
4546474849
5055606570
7580859095
100120140160180
200250300
Appendix Table 4 ˚C - ˚F Conversion Table
˚C
–73.3–62.2–51.1–40.0–34.4
–28.9–23.3–17.8–17.2–16.7
–16.1–15.6–15.0–14.4–13.9
–13.3–12.8–12.2–11.7–11.1
–10.6–10.0– 9.4– 8.9– 8.3
– 7.8– 7.2– 6.7– 6.1– 5.6
– 5.0– 4.4– 3.9– 3.3– 2.8
– 2.2– 1.7– 1.1– 0.6
–148.0–112.0– 76.0– 40.0– 22.0
– 4.014.032.033.835.6
37.439.241.042.844.6
46.448.250.051.853.6
55.457.259.060.862.6
64.466.268.069.871.6
73.475.277.078.880.6
82.484.286.087.8
–100– 80– 60– 40– 30
– 20– 10
012
34567
89
101112
1314151617
1819202122
2324252627
28293031
˚F ˚C
0.00.61.11.72.2
2.83.33.94.45.0
5.66.16.77.27.8
8.38.99.4
10.010.6
11.111.712.212.813.3
13.914.415.015.616.1
16.717.217.818.318.9
19.420.020.621.1
89.691.493.295.096.8
98.6100.4102.2104.0105.8
107.6109.4111.2113.0114.8
116.6118.4120.2122.0123.8
125.6127.4129.2131.0132.8
134.6136.4138.2140.0141.8
143.6145.4147.2149.0150.8
152.6154.4156.2158.0
3233343536
3738394041
4243444546
4748495051
5253545556
5758596061
6263646566
67686970
˚F ˚C
21.722.222.823.323.9
24.425.025.626.126.7
27.227.828.328.929.4
30.030.631.131.732.2
32.833.333.934.435.0
35.636.136.737.237.8
38.338.939.440.040.6
41.141.742.242.8
159.8161.6163.4165.2167.0
168.8170.6172.4174.2176.0
177.8179.6181.4183.2185.0
186.8188.6190.4192.2194.0
195.8197.6199.4201.2203.0
204.8206.6208.4210.2212.0
213.8215.6217.4219.2221.0
222.8224.6226.4228.2
7172737475
7677787980
8182838485
8687888990
9192939495
96979899
100
101102103104105
106107108109
˚F ˚C
43.346.148.951.754.4
57.260.065.671.176.7
82.287.893.398.9
104.4
110.0115.6121.1148.9176.7
204232260288316
343371399427454
482510538593649
704760816871
230239248257266
275284302320338
356374392410428
446464482572662
752842932
10221112
12021292138214721562
16521742183220122192
2372255227322912
110115120125130
135140150160170
180190200210220
230240250300350
400450500550600
650700750800850
900950
1 0001 1001 200
1 3001 4001 5001 600
˚F
C= (F-32)
F=32+ C
5―99―5
Appendix Table 5 Viscosity Conversion Table
32.636.039.142.345.5
48.752.055.458.862.3
65.969.673.477.281.1
85.189.293.397.5
102
106110115119123
128132137141145
150154159
32.836.339.442.645.8
49.052.455.859.262.7
66.470.173.977.781.7
85.789.894.098.2
102
107111115120124
129133138142146
150155160
30.833.335.938.541.1
43.746.349.152.155.1
58.261.464.768.071.5
75.078.682.185.889.5
93.397.1
101105109
112116120124128
132136140
31.233.736.539.141.7
44.347.050.052.956.0
59.162.365.669.172.6
76.179.783.687.491.3
95.198.9
103107111
115119123127131
135139143
1.141.221.311.401.48
1.561.651.751.841.93
2.022.122.222.322.43
2.542.642.762.872.98
3.103.223.343.463.58
3.703.823.954.074.20
4.324.454.57
KinematicViscositymm2/s
SayboltUniversalSUS (sec)
100 ˚F 210 ˚F 50 ˚C 100 ˚C
No.1 TypeRedwoodR (sec) Engler
E (degree)
Remarks 1 mm2/s=1 cSt
163168172177181
186190195199204
208213218222227
231254277300323
346371394417440
464556649742834
9271 1591 391
164170173178183
187192196201205
210215219224228
233256279302326
349373397420443
467560653747840
9331 1671 400
144148153156160
164168172176180
184188193197201
205225245266286
306326347367387
408490571653734
8161 0201 224
147151155159164
168172176180185
189193197202206
210231252273294
315336357378399
420504588672757
8411 0511 241
4.704.834.965.085.21
5.345.475.595.725.85
5.986.116.246.376.50
6.637.247.908.559.21
9.8910.511.211.812.5
13.215.818.421.123.7
26.332.939.5
KinematicViscositymm2/s
SayboltUniversalSUS (sec)
100 ˚F 210 ˚F 50 ˚C 100 ˚C
No.1 TypeRedwoodR (sec) Engler
E (degree)
For example, to convert 38 ˚C into ˚F, read the figure in the right ˚Fcolumn adjacent to the 38 in the center column in the 2nd block. Thismeans that 38 ˚C is 100.4 ˚F. To convert 38 ˚F into ˚C, read the figurein the left ˚C column of the same row, which indicates that the answeris 3.3 ˚C.
How to use this table
6160
Appendix Table 7 Hardness Conversion Table (Reference)
RockwellC Scale
Hardness(1 471 N){150 kgf}
VickersHardness
Brinell Hardness
Standard Ball TungstenCarbide Ball
RockwellHardness
A Scale B Scale
Load 588.4 N{60 kgf}
BraleIndenter
Load 980.7 N{100 kgf}
1.588 mm Ball(1/16 in.)
940900865832800
772746720697674
653633613595577
560544528513498
484471458446434
423412402392382
372363354345336
327318310302294
286279272266260
254248243238
230222213204
196188180173166160
—————
—————
—————
—500487475464
451442432421409
400390381371362
353344336327319
311301294286279
271264258253247
243237231226
219212203194
187179171165158152
———
739722
705688670654634
615595577560543
525512496481469
455443432421409
400390381371362
353344336327319
311301294286279
271264258253247
243237231226
219212203194
187179171165158152
Shore Hardness
85.685.084.583.983.4
82.882.381.881.280.7
80.179.679.078.578.0
77.476.876.375.975.2
74.774.173.673.172.5
72.071.570.970.469.9
69.468.968.467.967.4
66.866.365.865.364.7
64.363.863.362.862.4
62.061.561.060.5
————
——————
———―—
—————
—————
—————
—————
—————
——
(109.0)(108.5)(108.0)
(107.5)(107.0)(106.0)(105.5)(104.5)
(104.0)(103.0)(102.5)(101.5)(101.0)
100.099.098.597.8
96.795.593.992.3
90.789.587.185.583.581.7
9795929188
8785838180
7876757472
7169686766
6463626058
5756555452
5150494847
4644434241
4140383837
36353534
33323129
282726252424
6867666564
6362616059
5857565554
5352515049
4847464544
4342414039
3837363534
3332313029
2827262524
23222120
(18)(16)(14)(12)
(10)(8)(6)(4)(2)(0)
Appendix Table 6 inch – mm Conversion Table1″=25.4 mm
inch 0 1
Fraction Decimal
01/641/323/64
1/165/643/327/64
1/89/645/32
11/64
3/1613/64
7/3215/64
1/417/64
9/3219/64
5/1621/6411/3223/64
3/825/6413/3227/64
7/1629/6415/3231/64
1/233/6417/3235/64
9/1637/6419/3239/64
5/841/6421/3243/64
11/1645/6423/3247/64
3/449/6425/3251/64
13/1653/6427/3255/64
7/857/6429/3259/64
15/1661/6431/3263/64
0.0000000.0156250.0312500.046875
0.0625000.0781250.0937500.109375
0.1250000.1406250.1562500.171875
0.1875000.2031250.2187500.234375
0.2500000.2656250.2812500.296875
0.3125000.3281250.3437500.359375
0.3750000.3906250.4062500.421875
0.4375000.4531250.4687500.484375
0.5000000.5156250.5312500.546875
0.5625000.5781250.5937500.609375
0.6250000.6406250.6562500.671875
0.6875000.7031250.7187500.734375
0.7500000.7656250.7812500.796875
0.8125000.8281250.8437500.859375
0.8750000.8906250.9062500.921875
0.9375000.9531250.9687500.984375
0.0000.3970.7941.191
1.5881.9842.3812.778
3.1753.5723.9694.366
4.7625.1595.5565.953
6.3506.7477.1447.541
7.9388.3348.7319.128
9.5259.922
10.31910.716
11.11211.50911.90612.303
12.70013.09713.49413.891
14.28814.68415.08115.478
15.87516.27216.66917.066
17.46217.85918.25618.653
19.05019.44719.84420.241
20.63821.03421.43121.828
22.22522.62223.01923.416
23.81224.20924.60625.003
25.40025.79726.19426.591
26.98827.38427.78128.178
28.57528.97229.36929.766
30.16230.55930.95631.353
31.75032.14732.54432.941
33.33833.73434.13134.528
34.92535.32235.71936.116
36.51236.90937.30637.703
38.10038.49738.89439.291
39.68840.08440.48140.878
41.27541.67242.06942.466
42.86243.25943.65644.053
44.45044.84745.24445.641
46.03846.43446.83147.228
47.62548.02248.41948.816
49.21249.60950.00650.403
50.80051.19751.59451.991
52.38852.78453.18153.578
53.97554.37254.76955.166
55.56255.95956.35656.753
57.15057.54757.94458.341
58.73859.13459.53159.928
60.32560.72261.11961.516
61.91262.30962.70663.103
63.50063.89764.29464.691
65.08865.48465.88166.278
66.67567.07267.46967.866
68.26268.65969.05669.453
69.85070.24770.64471.041
71.43871.83472.23172.628
73.02573.42273.81974.216
74.61275.00975.40675.803
76.20076.59776.99477.391
77.78878.18478.58178.978
79.37579.77280.16980.566
80.96281.35981.75682.153
82.55082.94783.34483.741
84.13884.53484.93185.328
85.72586.12286.51986.916
87.31287.70988.10688.503
88.90089.29789.69490.091
90.48890.88491.28191.678
92.07592.47292.86993.266
93.66294.05994.45694.853
95.25095.64796.04496.441
96.83897.23497.63198.028
98.42598.82299.21999.616
100.012100.409100.806101.203
101.600101.997102.394102.791
103.188103.584103.981104.378
104.775105.172105.569105.966
106.362106.759107.156107.553
107.950108.347108.744109.141
109.538109.934110.331110.728
111.125111.522111.919112.316
112.712113.109113.506113.903
114.300114.697115.094115.491
115.888116.284116.681117.078
117.475117.872118.269118.666
119.062119.459119.856120.253
120.650121.047121.444121.841
122.238122.634123.031123.428
123.825124.222124.619125.016
125.412125.809126.206126.603
127.000127.397127.794128.191
128.588128.984129.381129.778
130.175130.572130.969131.366
131.762132.159132.556132.953
133.350133.747134.144134.541
134.938135.334135.731136.128
136.525136.922137.319137.716
138.112138.509138.906139.303
139.700140.097140.494140.891
141.288141.684142.081142.478
142.875143.272143.669144.066
144.462144.859145.256145.653
146.050146.447146.844147.241
147.638148.034148.431148.828
149.225149.622150.019150.416
150.812151.209151.606152.003
152.400152.797153.194153.591
153.988154.384154.781155.178
155.575155.972156.369156.766
157.162157.559157.956158.353
158.750159.147159.544159.941
160.338160.734161.131161.528
161.925162.322162.719163.116
163.512163.909164.306164.703
165.100165.497165.894166.291
166.688167.084167.481167.878
168.275168.672169.069169.466
169.862170.259170.656171.053
171.450171.847172.244172.641
173.038173.434173.831174.228
174.625175.022175.419175.816
176.212176.609177.006177.403
2 3 4 5 6 7 8 9 10
177.800178.197178.594178.991
179.388179.784180.181180.578
180.975181.372181.769182.166
182.562182.959183.356183.753
184.150184.547184.944185.341
185.738186.134186.531186.928
187.325187.722188.119188.516
188.912189.309189.706190.103
190.500190.897191.294191.691
192.088192.484192.881193.278
193.675194.072194.469194.866
195.262195.659196.056196.453
196.850197.247197.644198.041
198.438198.834199.231199.628
200.025200.422200.819201.216
201.612202.009202.406202.803
203.200203.597203.994204.391
204.788205.184205.581205.978
206.375206.772207.169207.566
207.962208.359208.756209.153
209.550209.947210.344210.741
211.138211.534211.931212.328
212.725213.122213.519213.916
214.312214.709215.106215.503
215.900216.297216.694217.091
217.488217.884218.281218.678
219.075219.472219.869220.266
220.662221.059221.456221.853
222.250222.647223.044223.441
223.838224.234224.631225.028
225.425225.822226.219226.616
227.012227.409227.806228.203
228.600228.997229.394229.791
230.188230.584230.981231.378
231.775232.172232.569232.966
233.362233.759234.156234.553
234.950235.347235.744236.141
236.538236.934237.331237.728
238.125238.522238.919239.316
239.712240.109240.506240.903
241.300241.697242.094242.491
242.888243.284243.681244.078
244.475244.872245.269245.666
246.062246.459246.856247.253
247.650248.047248.444248.841
249.238249.634250.031250.428
250.825251.222251.619252.016
252.412252.809253.206253.603
254.000254.397254.794255.191
255.588255.984256.381256.778
257.175257.572257.969258.366
258.762259.159259.556259.953
260.350260.747261.144261.541
261.938262.334262.731263.128
263.525263.922264.319264.716
265.112265.509265.906266.303
266.700267.097267.494267.891
268.288268.684269.081269.478
269.875270.272270.669271.066
271.462271.859272.256272.653
273.050273.447273.844274.241
274.638275.034275.431275.828
276.225276.622277.019277.416
277.812278.209278.606279.003
mm
62 63
Appendix Table 8 Values of Standard Tolerance Grades IT
Basic Size(mm)
Standard Grades
over incl. Tolerances (pm) Tolerances (mm)
IT1
—
3
6
10
18
30
50
80
120
180
250
315
400
500
630
800
1 000
1 250
1 600
2 000
2 500
3
6
10
18
30
50
80
120
180
250
315
400
500
630
800
1 000
1 250
1 600
2 000
2 500
3 150
0.8
1
1
1.2
1.5
1.5
2
2.5
3.5
4.5
6
7
8
9
10
11
13
15
18
22
26
1.2
1.5
1.5
2
2.5
2.5
3
4
5
7
8
9
10
11
13
15
18
21
25
30
36
2
2.5
2.5
3
4
4
5
6
8
10
12
13
15
16
18
21
24
29
35
41
50
3
4
4
5
6
7
8
10
12
14
16
18
20
22
25
28
33
39
46
55
68
4
5
6
8
9
11
13
15
18
20
23
25
27
32
36
40
47
55
65
78
96
6
8
9
11
13
16
19
22
25
29
32
36
40
44
50
56
66
78
92
110
135
10
12
15
18
21
25
30
35
40
46
52
57
63
70
80
90
105
125
150
175
210
14
18
22
27
33
39
46
54
63
72
81
89
97
110
125
140
165
195
230
280
330
25
30
36
43
52
62
74
87
100
115
130
140
155
175
200
230
260
310
370
440
540
40
48
58
70
84
100
120
140
160
185
210
230
250
280
320
360
420
500
600
700
860
60
75
90
110
130
160
190
220
250
290
320
360
400
440
500
560
660
780
920
1 100
1 350
0.10
0.12
0.15
0.18
0.21
0.25
0.30
0.35
0.40
0.46
0.52
0.57
0.63
0.70
0.80
0.90
1.05
1.25
1.50
1.75
2.10
0.14
0.18
0.22
0.27
0.33
0.39
0.46
0.54
0.63
0.72
0.81
0.89
0.97
1.10
1.25
1.40
1.65
1.95
2.30
2.80
3.30
0.25
0.30
0.36
0.43
0.52
0.62
0.74
0.87
1.00
1.15
1.30
1.40
1.55
1.75
2.00
2.30
2.60
3.10
3.70
4.40
5.40
0.40
0.48
0.58
0.70
0.84
1.00
1.20
1.40
1.60
1.85
2.10
2.30
2.50
2.80
3.20
3.60
4.20
5.00
6.00
7.00
8.60
0.60
0.75
0.90
1.10
1.30
1.60
1.90
2.20
2.50
2.90
3.20
3.60
4.00
4.40
5.00
5.60
6.60
7.80
9.20
11.00
13.50
1.00
1.20
1.50
1.80
2.10
2.50
3.00
3.50
4.00
4.60
5.20
5.70
6.30
7.00
8.00
9.00
10.50
12.50
15.00
17.50
21.00
1.40
1.80
2.20
2.70
3.30
3.90
4.60
5.40
6.30
7.20
8.10
8.90
9.70
11.00
12.50
14.00
16.50
19.50
23.00
28.00
33.00
IT2 IT3 IT4 IT5 IT6 IT7 IT8 IT9 IT10 IT11 IT12 IT13 IT14 IT15 IT16 IT17 IT18
Basic Size(mm)
over incl.
—
3
6
10
18
30
50
80
120
180
250
315
400
500
630
800
1 000
1 250
1 600
2 000
2 500
3
6
10
18
30
50
80
120
180
250
315
400
500
630
800
1 000
1 250
1 600
2 000
2 500
3 150
Remarks 1. Standard tolerance grades IT14 to IT18 shall not be used for basic sizes less than or equal to 1 mm.2. Values for standard tolerance grades IT1 to IT5 for basic sizes over 500 mm are included for experimental use.
6564
Bearing Conversion Tables
Page
Conversion Table 1 Deep groove ball bearings open type
(Metric series) ................................................... 66
Conversion Table 2 Deep groove ball bearings shielded type
(Metric series) ................................................... 67
Conversion Table 3 Deep groove ball bearings with flanged
outer ring open type (Metric series) ................ 68
Conversion Table 4 Deep groove ball bearings with flanged
outer ring shielded type (Metric series) .......... 69
Conversion Table 5 Deep groove ball bearings open type
(Inch series) ...................................................... 70
Conversion Table 6 Deep groove ball bearings shielded type
(Inch series) ....................................................... 70
Conversion Table 7 Deep groove ball bearings with flanged
outer ring open type (Inch series) ................... 71
Conversion Table 8 Deep groove ball bearings with flanged
outer ring shielded type (Inch series) ............. 71
Conversion Table 9 Deep groove ball bearings with extended
inner ring open type (Inch series) ................... 72
Conversion Table 10 Deep groove ball bearings with extended
inner ring shielded type (Inch series) ............. 72
Conversion Table 11 Deep groove ball bearings with extended
inner ring, flanged open type (Inch series) .... 73
Conversion Table 12 Deep groove ball bearings with extended
inner ring, flanged shielded type
(Inch series) ...................................................... 73
Conversion Table 13 Ball bearings for synchros (Inch series).......... 74
Appendix Table 9 Physical and Mechanical Properties of Materials
Materials
Bearing Steel (hardened)
Martensitic Stainless SteelSUS 440C
Mild (C=0.12 to 0.20 %)Steel
Hard (C=0.3 to 0.5 %)Steel
Austenitic Stainless SteelSUS 304
Cast Iron
Gray IronFC200
Spheroidalgraphite IronFCD400
Aluminum
Zinc
Copper
(Annealed)Brass
(Machined)
SpecificGravity
7.83
7.68
7.86
7.84
8.03
7.3
7.0
2.69
7.14
8.93
8.5
Coefficientof Linear
Expansion(0 to 100 ˚C)
(K–1)
Hardness(Brinell)
Modulusof DirectElasticity(MPa)
{kgf/mm2}
Tensile Strength(MPa)
{kgf/mm2}
Yield Point(MPa)
{kgf/mm2}
Elongation(%)
12.5×10–6
10.1×10–6
11.6×10–6
11.3×10–6
16.3×10–6
10.4×10–6
11.7×10–6
23.7×10–6
31×10–6
16.2×10–6
19.1×10–6
650 to 740
580
100 to 130
160 to 200
150
223
Less than201
15 to 26
30 to 60
50
45
85 to 130
208 000{21 200}
200 000{20 400}
206 000{21 000}
206 000{21 000}
193 000{19 700}
98 100{10 000}
70 600{7 200}
92 200{9 400}
123 000{12 500}
103 000{10 500}
1 570 to 1 960{160 to 200}
1 960{200}
373 to 471{38 to 48}
539 to 686{55 to 70}
588{60}
More than200{20}
More than400{41}
78{8}
147{15}
196{20}
294 to 343{30 to 35}
363 to 539{37 to 55}
—
1 860{190}
216 to 294{22 to 30}
333 to 451{34 to 46}
245{25}
—
—
34{3.5}
—
69{7}
—
—
—
24 to 36
14 to 26
60
—
More than12
35
30 to 40
15 to 20
65 to 75
15 to 50
Remarks The hardness of hardened bearing steel and martensitic stainless steel is usually expressed using the Rockwell C Scale,but for comparison, it is converted into Brinell hardness.
6766
1
1.2
1.5
2
2.5
3
4
5
6
7
8
9
NSK ADR FAG GRW RMB BARDEN MPB NMB NTN
681MR31691
MR41X
681X691X601X
682MR52B692
MR62MR72602
682X692XMR82X602X
MR63683AMR83
693MR93603
623633
MR74MR84684A
MR104B694604
624634
MR85MR95MR105
685695605
625635
MR106MR126686A
696606626636
MR117MR137687
697607627637
MR128MR148688A
698608628638
689699609629639
AX1——
—
AX1.5619/1.5
—
BX2—
AX2
———
AX2.5X2.5
—60/2.5
617/3AX3X3
619/3——
623—
617/4—AX4
X4AY4604
624634
617/5——
X5AY5
—
625635
617/6X6AX6
AY6—
626—
617/7—
AX7
AY7607627
—
617/8—
X8
AY8608
——
X9AY9609629
—
———
—
—MR69/1.5
—
MR682—
MR619/2
———
———
MR60/2.5
—MR618/3
—
———
MR623—
——
MR618/4
———
MR624MR634
———
MR618/5——
MR625MR635
——
MR618/6
——
MR626—
——
618/7
—MR607MR627
—
——
MR618/8
—MR608
——
——
609MR629
—
681—
691
—
68/1.569/1.5
—
682—
692
———
68/2.569/2.5
—60/2.5
—683693/003
693——
623—
——
684
—694604
624634
———
685695605
625635
——
686
696—
626—
——
687
697607627
—
——
688
698608
——
689699609629
—
UL103——
—
UL154R1550
—
UL205—
R2060
———
UL256——
R2580
—UL307
—
———
R3100—
——
UL409
———
R4130R4160
———
UL511——
R5160R5190
——
UL613
——
U6190—
——
UL714
——
R7220—
——
UL816
—R8220
——
UL917—
609——
———
—
—19M1-5Y1
—
——
19M2Y1
———
18M2-519M2-5Y1
——
———
———
2M3Y1—
———
———
2M434
———
———
34-535
———
——
36—
———
——
37—
———
19M838
——
—19M9
—39
—
———
—
—EL1.5C
—
UL20C—
EL2C
———
————
—UL30C
—
———
EL-3R—
——
UL40C
———
EL4R—
———
UL50C——
EL5R—
——
UL60C
——
EL6R—
——
UL70C
—EL7R
——
———
—EL8R
——
—————
L-310L-310W51R-410
R-412
R-415R-515R-615
L-520L-520W02R-620
R-620W52R-720Y52R-720
L-625R-725R-825Y52R-825
L-630L-730R-830Y52
R-830R-930Y52R-930
R-1030—
L-740L-840L-940
L-1040R-1140R-1240
R-1340R-1640
L-850L-950L-1050
L-1150R-1350R-1450
R-1650R-1950
L-1060L-1260L-1360
R-1560R-1760R-1960
—
L-1170L-1370L-1470
—R-1970R-2270
—
L-1280L-1480L-1680
R-1980R-2280
——
L-1790L-2090
———
681—
691
BC1.2-4
68/1.569/1.560/1.5
682BC2-5692
BC2-6BC2-7602
68/2.569/2.5BC2.5-860/2.5
673683BC3-8
693BC3-9603
623633
674BC4-8684
BC4-10694604
624634
675BC5-9BC5-10
685695605
625635
676BC6-12686
696606626636
677BC7-13687
697607627637
678BC8-14688
698608628638
689699609629639
0.0394
0.0472
0.0591
0.0787
0.0984
0.1181
0.1575
0.1969
0.2362
0.2756
0.3150
0.3543
Conversion Table 1Deep groove ball bearingsOpen type (Metric series)
Conversion Table 2Deep groove ball bearingsShielded type (Metric series)
Bore diameter d
mm inch
In case ofstainless steel
————— hS ————— W ————— S ————— S ————— ————— X S ————— S ————— SS ————— F ——————
1.5
2
2.5
3
4
5
6
7
8
9
NSK ADR FAG GRW RMB BARDEN MPB NMB NTN
681XZZ691XZZ601XZZS
682ZZMR52BZZ692ZZ
MR62ZZMR72ZZ602ZZ
682XZZ692XZZ602XZZ
MR63ZZ683AZZ693ZZ
MR93ZZ623ZZ633ZZ
MR74ZZMR84ZZ684AZZ
MR104BZZ694ZZ604ZZ
624ZZ634ZZ1
MR85ZZMR95ZZ1MR105ZZ
685ZZ695ZZ605ZZ
625ZZ1635ZZ1
MR106ZZ1MR126ZZ686AZZ
696ZZ1606ZZ626ZZ1636ZZ
MR117ZZMR137ZZ687ZZ1
697ZZ1607ZZ1627ZZ637ZZ
MR128ZZ1MR148ZZ688AZZ1
698ZZ608ZZ628ZZ638ZZ
689ZZ1699ZZ1609ZZ629ZZ639ZZ
AX1.5ZZX1.5ZZ
—
BX2ZZ—
AX2ZZ
———
AX2.5ZZ——
—AX3ZZ
—
—623ZZ
—
——
638/4ZZ
X4ZZAY4ZZ604ZZ
624ZZ634ZZ
———
638/5ZZAY5ZZ
—
625ZZ635ZZ
—X6ZZ628/6ZZ
ZY6ZZ—
626ZZ—
——
AX7ZZ
AY7ZZ607ZZ627ZZ
—
637/8ZZ—
X8ZZ
AY8ZZ608ZZ
——
X9ZZAY9ZZ609ZZ629ZZ
—
———
———
———
———
———
—623.27
—
———
———
624.2ZMR634.27
———
———
625.2ZMR635.2Z
———
MR626.2Z———
———
—607.2ZMR627.2Z
—
———
—MR608.2Z
——
——
609.22MR629.2Z
—
68/1.5-2Z69/1.5-2Z
—
682-2Z——
———
68/2.5-2Z69/2.5-2Z
—
—683-2Z693-2Z
—623-2Z
—
——
684-2Z
—694-2Z604-2Z
624-2Z634-2Z
———
685-2Z695-2Z605-2Z
625-2Z635-2Z
——
686-2Z
696-2Z—
626-2Z—
——
687-2Z
697-2Z607-2Z627-2Z
—
———
698-2Z608-2Z
——
—699-2Z609-2Z629-2Z
—
ULZ154——
ULZ205——
———
ULZ256——
—
ULZ307——
RF310—
——
ULZ409
———
RF413RV416
———
ULZ511——
RV516RV519
——
ULZ613
——
RV619—
——
ULZ714
——
RV722—
——
ULZ816
—RV822
——
ULZ917————
———
38M2SS——
———
38M2-5SS——
—38M3SS
—
—2M3SSY1
—
——
38M455
———
2M4SS34SS
———
———
34-5SS35SS
———
——
36SS—
———
——
37SS—
———
19M8SS38SS
——
—19M9SS
—39SS
—
UL15CHH——
UL20CHH——
———
———
—UL30CHH
—
—EL3RHH
—
——
UL40CHH
———
EL4RHH34RHH
———
UL50CHH——
EL5RHH—
——
UL60CHH
——
EL6RHH—
——
UL70CH
—EL7RHH
——
———
—EL8RHH
——
—————
L-415ZZR-515ZZR-615ZZ
L-520ZZL-520ZZW52R-620ZZ
R-620ZZY52R-720ZZY03R-720ZZ
L-625ZZR-725ZZR-825ZZ
L-630ZZL-730ZZR-830ZZ
R-930ZZY04R-1030ZZ
—
L-740X2ZZL-840ZZL-940ZZ
L-1040ZZR-1140ZZR-1240ZZ
R-1340ZZR-1640ZZ
L-850ZZL-950X2ZZL-1050ZZ
L-1150ZZR-1350ZZR-1450ZZ
R-1650ZZR-1950ZZ
L-1060ZZL-1260ZZL-1360ZZ
R-1560ZZR-1760ZZR-1960ZZ
—
L-1170ZZL-1370ZZL-1470ZZ
—R-1970ZZR-2270ZZ
—
L-1280ZZL-1480ZZL-1680ZZ
R-1980ZZR-2280ZZ
——
L-1790ZZL-2090ZZ
———
W68/1.5ZZAW69/1.5ZZAW60/1.5ZZA
W682ZZAWBC2-5ZZAW692ZZA
—WBC2-7ZZAW602ZZA
W68/2.5ZZAW69/2.5ZZAW60/2.5ZZA
WA673ZZAW683ZZAW693ZZA
WBC3-9ZZA623ZZ633ZZ
WA674ZZAWBC4-8ZZAW684ZZA
WBC4-10ZZA694ZZ604ZZ
624ZZ634ZZ
WA675ZZAWBC5-9ZZAWBC5-10ZZA
W685ZZ695ZZ605ZZ
625ZZ635ZZ
WA676ZZAWBC6-12ZZAW686ZZ
696ZZ606ZZ626ZZ636ZZ
WA677ZZAWBC7-13ZZAW687ZZ
697ZZ607ZZ627ZZ637ZZ
W678ZZAWBC8-14ZZW688ZZ
698ZZ608ZZ628ZZ638ZZ
W689ZZ699ZZ609ZZ629ZZ639ZZ
0.0591
0.0787
0.0984
0.1181
0.1575
0.1969
0.2362
0.2756
0.3150
0.3543
In case ofstainless steel
————— hS ————— W————— S ————— S ————— —————X S ————— S ————— SS ————— F ——————
Conversion
Bore diameter d
mm inch
6968
————— h <None>S ————— W ————— S —————— —————— X S —————— S —————— SS —————— F ——————
NSK ADR GRW RMB BARDEN MPB NMB NTN
F681F691
MF41X
F681XF691XF601X
F682MF52BF692
MF62MF72F602
F682XF692XMF82XF602X
MF63F683AMF83
F693MF93F603
F623
MF74MF84F684A
MF104BF694F604
F624F634
MF85MF95MF105
F685F695F605
F625F635
MF106MF126F686A
F696F606F626
MF117MF137F687
F697F607F627
MF128MF148F688A
F698F608
F689F699
1
1.2
1.5
2
2.5
3
4
5
6
7
8
9
——
—
FAX1.5F619/1.5
—
FBX2—
FAX2
———
FAX2.5FX2.5
——
—FAX3
—
FX3——
F623
——
FAX4
———
F624—
———
FX5——
——
——
FAX6
———
——
FAX7
—F607
—
——
FX8
—F608
FX9—
——
—
F68/1.5F69/1.5
—
F682—
F692
———
F68/2.5F69/2.5
——
—F683
—
F693——
F623
——
F684
—F694
—
F624F634
———
F685F695F605
F625F635
——
F686
F696—
F626
——
F687
F697F607
—
——
F688
F698F608
F689—
——
—
ULK154——
ULK205—
RK2060
———
ULK256——
RK2580
—ULK307
—
———
RK3100
——
ULK409
———
——
———
ULK511——
——
———
———
——
ULK714
———
——
ULK816
——
——
——
—
—F19M1-5Y1
—
F682—
F692
———
F68/2.5F19M2-5Y1
——
—F683
—
F693——
F623
——
F684
—F694
—
F624F634
———
F685F695
—
F625F635
——
F686
F696—
F626
——
F687
F697F607
—
——
F688
F698—
——
——
—
———
UL20FC——
———
————
—UL30FC
—
———
—
——
UL40FC
———
——
———
UL50FC——
——
——
UL60FC
———
——
UL70FC
———
———
——
——
LF-310RF-410
RF-412
LF-415RF-515RF-615
LF-520—
RF-620
RF-620W52RF-720Y52RF-720
LF-625RF-725RF-825Y52RF-825
LF-630LF-730RF-830Y52
RF-830RF-930Y52RF-930
RF-1030
LF-740LF-840LF-940
LF-1040RF-1140RF-1240
RF-1340RF-1640
LF-850LF-950LF-1050
LF-1150RF-1350RF-1450
RF-1650RF-1950
LF-1060LF-1260LF-1360
RF-1560RF-1760RF-1960
LF-1170LF-1370LF-1470
——
RF-2270
LF-1280LF-1480LF-1680
RF-1980RF-2280
LF-1790—
FL681FL691
FLBC1.2-4
FL68/1.5FL69/1.5EL60/1.5
FL682—
FL692
FLBC2-6—
FL602
FL68/2.5FL69/2.5FLBC2.5-8FL60/2.5
FL673FL683FLBC3-8
FL693FLBC3-9FL603
FL623
FL674FLBC4-8FL684
FLBC4-10FL694FL604
FL624—
FL675FLBC5-9FLBC5-10
FL685FL695FL605
FL625—
FL676FLBC6-12FL686
FL696FL606FL626
FL677FLBC7-13FL687
FL697——
FL678FLBC8-14FL688
FL698FL608
FL689—
0.0394
0.0472
0.0591
0.0787
0.0984
0.1181
0.1575
0.1969
0.2362
0.2756
0.3150
0.3543
ConversionConversion Table 3Deep groove ball bearings with flanged outer ringOpen type (Metric series)
In case ofstainless steel
————— hS ————— W ————— S —————— —————— X S —————— S —————— SS —————— F ——————
NSK ADR GRW RMB BARDEN MPB NMB NTN
F691XZZF601XZZ
F682ZZMF52BZZF692ZZMF72ZZF602ZZ
F682XZZF692XZZF602XZZ
MF63ZZF683AZZF693ZZ
MF93ZZF623ZZ
MF74ZZMF84ZZF684AZZ
MF104BZZF694ZZF604ZZ
F624ZZF634ZZ1
MF85ZZMF95ZZ1MF105ZZ
F685ZZF695ZZF605ZZ
F625ZZ1F635ZZ1
MF106ZZ1MF126ZZF686AZZ
F696ZZ1F606ZZF626ZZ1
MF117ZZMF137ZZF687ZZ1
F697ZZ1F607ZZ1F627ZZ
MF128ZZ1MF148ZZF688AZZ1
F698ZZF608ZZ
F689ZZ1F699ZZ1
1.5
2
2.5
3
4
5
6
7
8
9
FX1.5ZZ—
FBX2ZZ—
FAX2ZZ——
FAX2.5ZZFX2.5ZZ
—
—FAX3ZZFX3ZZ
—F623ZZ
——
F638/4ZZ
———
F624ZZ—
———
F638/5ZZ——
——
——
F628/6ZZ
———
——
FAX7ZZ
—F607ZZ
—
———
—F608ZZ
——
F69/1.5-2Z—
F682-2Z————
F68/2.5-2ZF69/2.5-2Z
—
—F683-2ZF693-2Z
—F623-2Z
——
F684-2Z
—F694-2Z
—
F624-2ZF634-2Z
———
F685-2ZF695-2ZF605-2Z
F625-2ZF635-2Z
——
F686-2Z
F696-2Z—
F626-27
——
F687-2Z
F697-2ZF607-2ZF627-2Z
———
F698-2ZF608-ZZ
——
——
ULKZ205————
ULKZ256——
—ULKZ307RKF308
—RKF310
——
ULKZ409
———
——
———
ULKZ511——
——
——
ULKZ613
———
——
ULKZ714
———
———
——
——
——
F682SS—
F692SS——
F68/2.5SSF69/2.5SS
—
—F683SS
—
—F623SS
——
F684SS
—F694SS
—
F624SSF634SS
———
F685SSF695SS
—
F625SSF635SS
——
F686SS
F696SS—
F626SS
——
F687SS
F697SSF607SSF627SS
——
F688SS
F698SSF608SS
F689SS—
——
UL20FCHH————
———
—UL30FCHH
—
——
——
UL40FCHH
———
——
———
UL50FCHH——
——
——
UL60FCHH
———
——
UL70FCHH
———
———
——
——
RF-515ZZRF-615ZZ
LF-520ZZ—
RF-620ZZRF-720ZZY03RF-720ZZ
LF-625ZZRF-725ZZRF-825ZZ
FL-630ZZLF-730ZZRF-830ZZ
RF-930ZZY04RF-1030ZZ
LF-740ZZLF-840ZZLF-940ZZ
LF-1040ZZRF-1140ZZRF-1240ZZ
RF-1340ZZRF-1640ZZ
LF-850ZZLF-950ZZLF-1050ZZ
LF-1150ZZRF-1350ZZRF-1450ZZ
RF-1650ZZRF-1950ZZ
LF-1060ZZUF-1260ZZLF-1360ZZ
RF-1560ZZRF-1760ZZ
—
LF-1170ZZLF-1370ZZLF-1470ZZ
——
RF-2270ZZ
LF-1280ZZUF-1480ZZUF-1680ZZ
—RF-2280ZZ
LF-1790ZZ—
FLW69/1.5ZZAFLW60/1.5ZZA
FLW682ZZA—
FLW692ZZAFLWBC2-7ZZAFLW602ZZA
FLW68/2.5ZZAFLW69/2.5ZZAFLW60/2.5ZZA
FLWA673ZZAFLW683ZZAFLW693ZZA
FLWBC3-9ZZAFL623ZZA
FLWA674ZZAFLWBC4-8ZZAFLW684ZZA
FLAWBC4-10ZZAFL694ZZAFL604ZZ
FL624ZZFL634ZZ
FLWA675ZZAFLWBC5-9ZZAFLAWBC5-10ZZA
FLW685ZZAFL695ZZFL605ZZ
FL625ZZFL635ZZ
FLWA676ZZAFLAWBC6-12ZZAFLW686ZZA
FL696ZZFL606ZZFL626ZZ
FLWA677ZZAFLAWBC7-13ZZAFLW687ZZA
FL697ZZFL607ZZFL627ZZ
FLAW678ZZAFLWBC8-14ZZAFLW688ZZ
FL698ZZFL608ZZ
FLW689ZZFL699ZZ
0.591
0.0787
0.0984
0.1181
0.1575
0.1969
0.2362
0.2756
0.3150
0.3543
In case ofstainless steel
Conversion Table 4Deep groove ball bearings with flanged outer ringShielded type (Metric series)
Bore diameter d
mm inch
Bore diameter d
mm inch
7170
S ————— W ————— S ————— S ————— ————— X S ————— S ————— F —————— SS —————In case ofstainless steel
R0ZZ
R1ZZ
R1-4ZZ
R133ZZSR1-5ZZ
R144ZZR2-5ZZR2-6ZZS
R2ZZR2AZZ
R155ZZS
R156ZZSR166ZZR3ZZ
R168ZZR188ZZR4BZZR4AAZZ
R1810ZZ
R6ZZ
1.016
1.191
1.397
1.984
2.380
3.175
3.967
4.762
6.350
7.938
9.525
NSK ADR FAG GRW RMB BARDEN MPB NMB NTN
R09
R0
R1
R1-4
R133R1-5
R144R2-5R2-6
R2R2A
R155
R156R166R3
R168R188R4BR4AA
R1810
R6
R09
X3/64
R1
X5/64
AX3/32X3/32
AX1/8X1/8
—
R2R2A
X5/32
AX3/16X3/16Y3/16
X1/4R188Y1/4R4A
—
Y3/8
R0308
R0310
R0412
R0516
R0612R620
R0816R820R824
R2R2A
R1020
R1220R1224R3
R1624R1632R4R4A
R2032
R6
1016
1191
1397
BR5/64
2380BR3/32
3175BR1/8ABR1/8A/6
BR1/8BBR1/8B/083
3967
4763A4763BBR3/16
6350A6350BBR1/4ABR1/4
7938
BR3/8
UL1304
UL1505
R1706
R2508
UL3006R3010
UL4008R4010
—
R4012—
UL5010
UL6010UL6012R6016
UL8012UL8016R8020
—
—
—
—
R0
R1
R1-4
R133R1-5
R144R2-5R2-6
R2R2A
R155
R156R166R3
R168R188R4R4A
R1810
R6
2C
21/2C
3C
4C
3332C5C
418C518C618C
R2CR2AC
5532C
5632C6316CR3C
614C814CR4CR4AR
8516C
R6R
R1-2
RI-21/2
RI-3
RI-4
RI-3332RI-5
RI-418RI-518RI-618
R-2—
RI-5532
RI-5632RI-6632R-3
RI-614RI-814R-4RI-1214
RI-8516
RI-1438
R01
R0
R1
R1-4
R133R1-5
R144R2-5R2-6
R2RA2
R155
R156R166R3
R168R188R4
—
—
—
0.0400
0.0469
0.0550
0.0781
0.0937
0.1250
0.1562
0.1875
0.2500
0.3125
0.3750
Conversion Table 5Deep groove ball bearingsOpen type (Inch series)
In case ofstainless steel
S ————— W ————— S ————— S ————— ————— X S ————— S ————— SS ————— F ——————
NSK ADR FAG GRW RMB BARDEN MPB NMB NTN
X3/64ZZ
R1ZZ
X5/64ZZ
AX3/32ZZX3/32ZZ
AX1/8ZZX1/8ZZ
—
R2ZZR2AZZ
X5/32ZZ
AX3/16ZZX3/16ZZY3/16ZZ
X1/4ZZR188ZZY1/4ZZR4AZZ
—
Y3/8ZZ
R0310.2Z
R0412.2Z
R0516.2Z
R0612.2ZR620.2Z
R0816.2ZR820.2ZR824.2Z
R2.2ZR2A.2Z
R1020.2Z
R1220.2ZR1224.2ZR3.2Z
R1624.2ZR1632.2ZR4.2ZR4A.2Z
R2032.2Z
R6.2Z
1191-2Z
1397-2Z
BR5/64-2Z
2380-2ZBR3/32ZZ
3175-2ZBR1/8A-2ZBR1/8A/6-2Z
BR1/8B-2ZBR1/8B/083-2Z
3967-2Z
4763A-2Z4763B-2ZBR3/16-2Z
6350A-2Z6350B-2ZBR1/4A-2ZBR1/4-2Z
7938-2Z
BR3/8-2Z
ULZ1505
RF1706
RF2508
ULZ3006RF3010
ULZ4008RF4010
—
RF4012—
ULZ5010
ULZ6010ULZ6012RF6016
ULZ8012ULZ8016RF8020
—
—
—
R0SS
R1S
R1-4SS
R133SSR1-5SS
R144SSR2-5SSR2-6SS
R2SSR2ASS
R155SS
R156SSR166SSR3SS
R168SSR188SSR4SSR4ASS
R1810SS
R6SS
21/2CHH
3CHH
4CHH
3332CHH5CHH
418CHH518CHH618CHH
R2CHHR2ACHH
5532CHH
5632CHH6316CHHR3CHH
614CHH814CHHR4CHHR4ARHH
8516CHH
R6RHH
RI-21/2ZZ
RI-3ZZ
RI-4ZZ
RI-3332ZZRI-5ZZ
RI-418ZZRI-518ZZRI-618ZZ
R-2ZZ—
RI-5532ZZ
RI-5632ZZRI-6632ZZR-3ZZ
RI-614ZZRI-814ZZR-4ZZRI-1214ZZ
RI-8516ZZ
RI-1438ZZ
RA0ZZA
RA1ZZ1
RA1-4ZZ1
RA133ZZARA1-5ZZA
RA144ZZARA2-5ZZARA2-6ZZA
R2ZZARA2ZZA
RA155ZZA
RA156ZZAR166ZZARA3ZZ
R168ZZARA188ZZAR4ZZRA4ZZ
—
R6ZZ
0.0469
0.0550
0.0781
0.0937
0.1250
0.1562
0.1875
0.2500
0.3125
0.3750
Conversion Table 6Deep groove ball bearingsShielded type (Inch series)
In case ofstainless steel
S ————— W ————— S ————— S ————— ————— X S ————— S ————— SS ————— F ——————
1.191
1.397
1.984
2.380
3.175
3.967
4.762
6.350
7.938
9.525
NSK ADR FAG GRW RMB BARDEN MPB NMB NTN
FR0
FR1
FR1-4
FR133FR1-5
FR144FR2-5FR2-6FR2
FR155
FR156FR166FR3
FR168FR188FR4B
FR1810
FR6
FX3/64
FR1
FX5/64
FAX3/32FX3/32
FAX1/8FX1/8
—FR2
FX5/32
FAX3/16FX3/16FY3/16
FX1/4FR188FY1/4
—
—
RF0310
RF0412
RF0516
RF0612RF620
RF0816RF820RF824RF2
RF1020
RF1220RF1224RF3
RF1624RF1632RF4
RF2032
—
F1191
F1397
F5/64
F2380F3/32
F3175F1/8AF1/8A/6F1/88
F3967
F4763AF4763B
—
F6350AF6350BF1/4A
F7938
—
ULK1505
RK1706
RK2508
ULK3006RK3010
ULK4008RK4010
—RK4012
ULK5010
ULK6010ULK6012RK6016
ULK8012ULK8016RK8020
—
—
FR0
FR1
FR1-4
FR133FR1-5
FR144FR2-5FR2-6FR2
FR155
FR156FR166FR3
FR168FR188FR4
FR1810
—
21/2FC
3FC
4FC
3332FC5FC
418FC518FC618FCR2FC
5532FC
5632FC6316FC
—
614FC814FCR4FC
8516FC
—
RIF-21/2
RIF-3
RIF-4
RIF-3332RIF-5
RIF-418RIF-518RIF-618RF-2
RIF-5532
RIF-5632RIF-6632
—
RIF-614RIF-814RF-4
RIF-8516
—
FLR0
FLR1
FLR1-4
FLR133FLR1-5
RIF-144FLR2-5FLR2-6FLR2
FLR155
FLR156FLR166FLR3
FLR168FLR188FLR4
—
—
0.0469
0.0550
0.0781
0.0937
0.1250
0.1562
0.1875
0.2500
0.3125
0.3750
Conversion Table 7Deep groove ball bearings with flanged outer ringOpen type (Inch series)
In case ofstainless steel
S ————— W ————— S ————— S ————— ————— X S ————— S ————— SS ————— F ——————
1.191
1.397
1.984
2.380
3.175
3.967
4.762
6.350
7.938
9.525
NSK ADR FAG GRW RMB BARDEN MPB NMB NTN
FR0ZZ
FR1ZZ
FR1-4ZZ
FR133ZZSFR1-5ZZ
FR144ZZFR2-5ZZFR2-6ZZSFR2ZZ
RF155ZZS
FR156ZZSFR166ZZFR3ZZ
FR168ZZFR188ZZFR4BZZ
FR1810ZZ
FR6ZZ
FX3/64ZZ
FR1ZZ
FX5/64ZZ
FAX3/32ZZFX3/32ZZ
FAX1/8ZZFX1/8ZZ
—FR2ZZ
FX5/32ZZ
FAX3/16ZZFX3/16ZZFY3/16ZZ
FX1/4ZZFR188ZZFY1/4ZZ
—
FY3/8ZZ
RF0310.2Z
RF0412.2Z
RF0516.2Z
RF0612.2ZRF620.2Z
RF0816.2ZRF820.2ZRF824.2ZRF2.2Z
RF1020.2Z
RF1220.2ZRF1224.2ZRF3.2Z
RF1624.2ZRF1632.2ZRF4.2Z
RF2032.2Z
RF6.2Z
F1191-2Z
F1397-2Z
F5/64-2Z
F2380-2ZF3/32-2Z
F3175-2ZF1/8A-2ZF1/8A/6-2ZF1/8B-2Z
F3967-2Z
F4763A-2ZF4763B-2ZF3/16-2Z
F6350A-2ZF6350B-2ZF1/4A-2Z
F7938-2Z
—
ULKZ1505
RKF1706
RKF2508
ULKZ3006RKF3010
ULKZ4008RKF4010
—RKF4012
ULKZ5010
ULKZ6010ULKZ6012RKF6016
ULKZ8012ULKZ8016RKF8020
—
—
FR0SS
FR1SS
FR1-4SS
FR133SSFR1-5SS
FR144SSFR2-5SSFR2-6SSFR2SS
FR155SS
FR156SSFR166SSFR3SS
FR168SSFR188SSFR4SS
FR1810SS
FR6SS
21/2FCHH
3FCHH
4FCHH
3332FCHH5FCHH
418FCHH518FCHH618FCHHR2FCHH
5532FCHH
5632FCHH6316FCHHR3FCHH
614FCHH814FCHHR4FCHH
8516FCHH
R6FRHH
RIF-21/2ZZ
RIF-3ZZ
RIF-4ZZ
RIF-3332ZZRIF-5ZZ
RIF-418ZZRIF-518ZZRIF-618ZZRF-2ZZ
RIF-5532ZZ
RIF-5632ZZRIF-6632ZZRF-3ZZ
RIF-614ZZRIF-814ZZRF-4ZZ
RIF-8516ZZ
RIF-1438ZZ
FLRA0ZZA
FLRA1ZZA
FLRA1-4ZZA
FLRA133ZZASFLRA1-5ZZA
FLRA144ZZAFLRA2-5ZZAFLRA2-6ZZASFLR2ZZA
FLRA155ZZAS
FLRA156ZZASFLRA166ZZAFLRA3ZZ
FLRA168ZZAFLRA188ZZAFLR4ZZ
—
FLR6ZZ
0.0469
0.0550
0.0781
0.0937
0.1250
0.1562
0.1875
0.2500
0.3125
0.3750
Conversion Table 8Deep groove ball bearings with flanged outer ringShielded type (Inch series)
Conversion
Bore diameter d
mm inch
Bore diameter d
mm inch
1.191
1.397
1.984
2.380
3.175
3.967
4.762
6.350
7.938
9.525
Bore diameter d
mm inch
Bore diameter d
mm inch
72 73
S ————— W ————— S ————— S —————— ———— X S ————— S ————— SS ————— F ——————In case ofstainless steel
RW0ZZ
RW1ZZ
RW1-4ZZ
RW133ZZSRW1-5ZZ
RW144ZZRW2-5ZZRW2-6ZZSRW2ZZ
RW155ZZS
RW156ZZSRW166ZZ
RW168ZZRW188ZZ
RW1810ZZ
1.191
1.397
1.984
2.380
3.175
3.967
4.762
6.350
7.938
NSK ADR FAG GRW RMB BARDEN MPB NMB NTN
RW0
RW1
RW1-4
RW133RW1-5
RW144RW2-5RW2-6RW2
RW155
RW156RW166
RW168RW188
RW1810
LX3/64
LR1
LX5/64
LAX3/32LX3/32
LAX1/8LX1/8
—LR2
LX5/32
LAX3/16LX3/16
LX1/4LR188
—
RE0310
RE0412
RE0516
RE0612RE620
RE0816RE820RE824RE2
RE1020
RE1220RE1224
RE1624RE1632
RE2032
E1191
E1397
E5/64
E2380E3/32
E3175E1/8AE1/8A/6E1/8B
E3967
E4763AE4763B
E6350AE6350B
E7938
ULU1505
RU1706
—
ULU3006RU3010
ULU4008RU4010
——
—
ULU6010ULU6012
ULU8012—
—
RW0
RW1
RW1-4
RW133RW1-5
RW144RW2-5RW2-6RW2
RW155
RW156RW166
RW168RW188
RW1810
21/2CE
3CE
4CE
3332CE5CE
418CE518CE618CER2CE
5532CE
5632CE6316CE
614CE814CE
8516CE
RI-21/2EE
RI-3EE
RI-4EE
RI-3332EERI-5EE
RI-418EERI-518EERI-618EER-2EE
RI-5532EE
RI-5632EERI-6632EE
RI-614EERI-814EE
RI-8516EE
RW0
RW1
RW1-4
RW133RW1-5
RW144RW2-5RW2-6RW2
RW155
RW156RW166
RW168RW188
—
0.0469
0.0550
0.0781
0.0937
0.1250
0.1562
0.1875
0.2500
0.3125
Conversion Table 9Deep groove ball bearings with extended inner ringOpen type (Inch series)
In case ofstainless steel
S ————— W ————— S ————— S ————— ————— X S ————— S ————— SS ————— F ——————
1.191
1.397
1.984
2.380
3.175
3.967
4.762
6.350
7.938
NSK ADR FAG GRW RMB BARDEN MPB NMB NTN
LX3/64ZZ
LR1ZZ
LX5/64ZZ
LAX3/32ZZLX3/32ZZ
LAX1/8ZZLX1/8ZZ
—LR2ZZ
LX5/32ZZ
LAX5/32ZZLX3/16ZZ
LX1/4ZZLR188ZZ
—
RE0310.2Z
RE0412.2Z
RE0516.2Z
RE0612.2ZRE620.2Z
RE0816.2ZRE820.2ZRE824.2ZRE2.2Z
RE1020.2Z
RE1220.2ZRE1224.2Z
RE1624.2ZRE1632.2Z
RE2032.2Z
E1191-2Z
E1397-2Z
E5/64-2Z
E2380-2ZE3/32-2Z
E3175-2ZE1/8A-2ZE1/8A/6-2ZE1/8B-2Z
E3967-2Z
E4763A-2ZE4763B-2Z
E6350A-2ZE6350B-2Z
E7938-2Z
—
—
—
——
ULUZ4008———
ULUZ5010
ULUZ6010ULUZ6012
ULUZ8012—
—
—
—
RW1-4SS
RW133SSRW1-5SS
RW144SSRW2-5SSRW2-6SSRW2SS
RW155SS
RW156SSRW166SS
RW168SSRW188SS
RW1810SS
21/2CHHE
3CHHE
4CHHE
3332CHHE5CHHE
418CHHE518CHHE618CHHER2CHHE
5532CHHE
5632CHHE6316CHHE
614CHHE814CHHE
8516CHHE
RI-21/2ZZEE
RI-3ZZEE
RI-4ZZEE
RI-3332ZZEERI-5ZZEE
RI-418ZZEERI-518ZZEERI-618ZZEER-2ZZEE
RI-5532ZZEE
RI-5632ZZEERI-6632ZZEE
RI-614ZZEERI-814ZZEE
RI-8516ZZEE
RAW0ZZA
RAW1ZZA
RAW1-4ZZA
RAW133ZZARAW1-5ZZA
RAW144ZZARAW2-5ZZARAW2-6ZZARW2ZZA
RAW155ZZA
RAW156ZZARW166ZZA
RW168ZZARAW188ZZA
—
0.0469
0.0550
0.0781
0.0937
0.1250
0.1562
0.1875
0.2500
0.3125
Conversion Table 10Deep groove ball bearings with extended inner ringShielded type (Inch series)
In case ofstainless steel
S ————— W ————— S ————— S —————— ———— X S ————— S ————— SS ————— F ——————
1.191
1.397
1.984
2.380
3.175
3.967
4.762
6.350
7.938
NSK ADR FAG GRW RMB BARDEN MPB NMB NTN
FRW0
FRW1
FRW1-4
FRW133FRW1-5
FRW144FRW2-5FRW2-6FRW2
FRW155
FRW156FRW166
FRW168FRW188
FRW1810
FLX3/64
FLR1
FLX5/64
FLAX3/32FLX3/32
FLAX1/8FLX1/8
—FLR2
FLX5/32
FLAX3/16FLX3/16
FLX1/4FLR188
—
RFE0310
RFE0412
RFE0516
RFE0612RFE620
RFE0816RFE820RFE824RFE2
RFE1020
RFE1220RFE1224
RFE1624RFE1632
RFE2032
FE1191
FE1397
FE5/64
FE2380FE3/32
FE3175FE1/8AFE1/8A/6FE1/8B
FE3967
FE4763AFE4763B
FE6350AFE6350B
FE7938
ULKU1505
RKU1706
—
ULKU3006RKU3010
ULKU4008RKU4010
——
—
ULKU6010ULKU6012
ULKU8012—
—
FRW0
FRW1
FRW1-4
FRW133FRW1-5
FRW144FRW2-5FRW2-6FRW2
FRW155
FRW156FRW166
FRW168FRW188
FRW1810
21/2FCE
3FCE
4FCE
3332FCE5FCE
418FCE518FCE618FCER2FCE
5532FCE
5632FCE6316FCE
614FCE814FCE
8516FCE
RIF-21/2EE
RIF-3EE
RIF-4EE
RIF-3332EERIF-5EE
RIF-418EERIF-518EERIF-618EERF-2EE
RIF-5532EE
RIF-5632EERIF-6632EE
RIF-614EERIF-814EE
RIF-8516EE
FLRW0
FLRW1
FLRW1-4
FLRW133FLRW1-5
FLRW144FLRW2-5FLRW2-6FLRW2
FLRW155
FLRW156FLRW166
FLRW168FLRW188
—
0.0469
0.0550
0.0781
0.0937
0.1250
0.1562
0.1875
0.2500
0.3125
Conversion Table 11Deep groove ball bearings with extended inner ring,Flanged, open type (Inch series)
In case ofstainless steel
S ————— W ————— S ————— S ————— ————— X S ————— S ————— SS ————— F ——————
1.191
1.397
1.984
2.380
3.175
3.967
4.762
6.350
7.938
NSK ADR FAG GRW RMB BARDEN MPB NMB NTN
FRW0ZZ
FRW1ZZ
FRW1-4ZZ
FRW133ZZSFRW1-5ZZ
FRW144ZZFRW2-5ZZFRW2-6ZZSFRW2ZZ
FRW155ZZS
FRW156ZZSFRW166ZZ
FRW168ZZFRW188ZZ
FRW1810ZZ
FLX3/64ZZ
FLR1ZZ
FLX5/64ZZ
FLAX3/32ZZFLX3/32ZZ
FLAX1/8ZZFLX1/8ZZ
—FLR2ZZ
FLX5/32ZZ
FLAX3/16ZZFLX3/16ZZ
FLX1/4ZZFLR188ZZ
—
RFE0310.2Z
RFE0412.2Z
RFE0516.2Z
RFE0612.2ZRFE620.2Z
RFE0816.2ZRFE820.2ZRFE824.2ZRFE2.2Z
RFE1020.2Z
RFE1220.2ZRFE1224.2Z
RFE1624.2ZRFE1632.2Z
RFE2032.2Z
FE1191-2Z
FE1397-2Z
FE5/64-2Z
FE2380-2ZFE3/32-2Z
FE3175-2ZFE1/8A-2ZFE1/8A/6-2ZFE1/8B-2Z
FE3967-2Z
FE4763A-2ZFE4763B-2Z
FE6350A-2ZFE6350B-2Z
FE7938-2Z
—
—
—
——
ULKUZ4008———
ULKUZ5010
ULKUZ6010ULKUZ6012
ULKUZ8012—
—
—
—
FRW1-4SS
FRW133SSFRW1-5SS
FRW144SSFRW2-5SSFRW2-6SSFRW2SS
FRW155SS
FRW156SSFRW166SS
FRW168SSFRW188SS
FRW1810SS
21/2FCHHE
3FCHHE
4FCHHE
3332FCHHE5FCHHE
418FCHHE518FCHHE618FCHHER2FCHHE
5532FCHHE
5632FCHHE6316FCHHE
614FCHHE814FCHHE
8516FCHHE
RIF-21/2ZZEE
RIF-3ZZEE
RIF-4ZZEE
RIF-3332ZZEERIF-5ZZEE
RIF-418ZZEERIF-518ZZEERIF-618ZZEERF-2ZZEE
RIF-5532ZZEE
RIF-5632ZZEERIF-6632ZZEE
RIF-614ZZEERIF-814ZZEE
RIF-8516ZZEE
FLRAW0ZZA
FLRAW1ZZA
FLRAW1-4ZZA
FLRAW133ZZAFLRAW1-5ZZA
FLRAW144ZZAFLRAW2-5ZZAFLRAW2-6ZZAFLRW2ZZA
FLRAW155ZZA
FLRAW156ZZAFLARW166ZZA
FLARW168ZZAFLRAW188ZZA
—
0.0469
0.0550
0.0781
0.0937
0.1250
0.1562
0.1875
0.2500
0.3125
Conversion Table 12Deep groove ball bearings with extended inner ring,Flanged, shielded type (Inch series)
Conversion
Bore diameter d
mm inch
Bore diameter d
mm inch
Bore diameter d
mm inch
Bore diameter d
mm inch