toolmex workholding catalog - 2010 - lathe · pdf fileorder from logan actuator co. - (815)...

Precision Scroll ChucksPR

ECIS

ION

SCROLL

CHUCKS

50 PRECISION SCROLL CHUCKS Toolmex Customer Service 508-653-8897 • 800-992-4766 • www.toolmex.com

3 and 4-Jaw Self-Centering Scroll ChucksForged Steel, High Speed

• Extremely accurate and guaranteed to maintain exceptionalaccuracy for an extended period of time

• Chucks have a modern and compact design• Use whenever high precision machining is needed

Chuck Body

• Drop forged of high grade steel then put through precisemachining operations

• All bearing surfaces are carefully hardened and precisely ground

Scroll Plate

• Drop forged of fine quality alloy steel and carefully case hardened• Thread flanks are ground on both sides• Each scroll is balanced

Jaws

• Made of fine alloy steel

Teeth and Guides

• Hardened and fully ground on both sides

Pinions

• Hardened and ground fine alloy steel

Bushings

• Made of fine alloy steel• Hardened ground and the pressed into the pinion seats

Precision grinding of scroll plate and jaw teethallows you to:

• Eliminate the possibility of deformation as a result ofheat treatment

• Reach uniform radial gripping force on all teeth of jaws• Increase guarantee period for high centering accuracy• Increase the gripping force

1. Chuck Body2. Back Cover3. Scroll Plate 7-887-5...4. Pinion 7-886-5...5. Pinion Half Ring 7-888-7...6. Pinion Sleeve 7-888-5..7. Hard Master Jaws 7-885-...8. Hard Top Jaws 7-883-...9. Grease Nipple10. Back Cover Mounting Bolts11. Chuck Mounting Bolts 7-897-...12. Back Cover Locating Pin13. Mounting Bolts14. ChuckWrench 7-889-0...15 and 16. Jaw mounting bolts 7-897-5..

Hardenedand GroundSurfaces

Outstanding Accuracy and Quality

American StandardTongue and Groove Jaws

Bison recommended chuck grease:Part Number 7-799-025

Spare Parts: page 66Backplates: pages 56-60

• Each scroll chuck is assembled and statically balancedto high tolerance levels

• Interstage and final inspections ensure high quality

Order from Logan Actuator Co. - (815) 943-9500 - [email protected]

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Precision Scroll Chucks

Quality Products • Partnership • Industry Experts PRECISION SCROLL CHUCKS

ChuckDia

PartNumber

HoleDia

RPMmax

Wtlbs

5" 7-820-0500 1.3976 4800 11

6-1/4" 7-820-0600 1.6535 4500 22

8" 7-820-0800 2.1654 4000 39

10" 7-820-1000 2.9921 3500 55

12-1/2" 7-820-1200 4.0551 2800 110

15-3/4" 7-820-1600 5.3543 2000 187

20" 7-820-2000 7.480 1200 320

25" 7-820-2500 9.921 1000 551

32" 7-820-3200 10.50 450 886

Front View of 20" and 25" ChucksSee page 53 forT-slot Dimensions

3 and 4-Jaw Self-Centering Scroll ChucksForged Steel Body Plain Back Chucks, Backplates Required3 Pinion Design

Front View

Back View

BISON 3-Jaw Scroll Chuckswith Two-Piece Hard Reversible Jaws

Each chuck is provided with:

• 1 Set of hard master jaws• 1 Set of hard top reversible jaws• 1 Chuck wrench• 1 Set of mounting bolts• 2 Hex keys• Eye bolts for chuck sizes15-3/4" diameter and larger

Type 3505

3-Jaw Self-Centering Chuckswith Two-Piece Hard Reversible Jaws

• Steel Body• Less friction between jaw and guide• Greater Clamping Force• Less wear due to direct pressure

PartNumber

Chuck Dia A MaxSpeed

MaxTorqueon Key

GrippingForce Wt Max

ClampingMin

Clamping B C D Emax F G H L P

mm in RPM lbt*ft lbf lbs inches

3-820-2800 700 28 873 516.3 26302.6 738.5 27.5591 3.3465 5.7087 25.9843 24.8031 8.8583 3.2283 8.5827 6xM20 2.3622 0.315

3-820-3600 900 36 679 516.3 28101.1 1245.6 35.4331 5.9055 6.4961 33.4646 31.8898 14.7638 3.2283 8.5827 6xM22 2.3622 0.3150

3-820-4000 1000 40 611 516.3 28101.1 1589.5 39.3701 7.8740 6.4961 37.4016 35.8268 15.3543 3.2283 11.6535 6xM24 2.3622 0.3937

3-820-4800 1200 48 509 516.3 28101.1 2645.5 47.2441 9.4488 7.2835 37.4016 35.8268 15.3543 3.1496 16.9291 6xM24 2.9528 0.3937

3-820-6300 1600 63 382 516.3 28101.1 6172.8 62.9921 9.4488 7.2835 37.4016 35.8268 15.3543 3.1496 16.9291 6xM24 2.9528 0.3937



ECIS

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CHUCKS


BISON 3-Jaw Scroll Chucks with Two Sets of Hard Solid JawsEach chuck is provided with:

• 1 Set of hard solid ID jaws• 1 Set of hard solid OD jaws• 1 Chuck wrench• 1 Set of mounting bolts• 1 Hex key• Eye bolts for chuck sizes15-3/4" diameter and larger

ChuckDia

PartNumber

HoleDia

RPMmax

Wtlbs

4" 7-829-0400 .7874 5200 6.17

5" 7-829-0500 1.3976 4800 11

6-1/4" 7-829-0600 1.6535 4500 22

8" 7-829-0800 2.1654 4000 39

10" 7-829-1000 2.9921 3500 55

12-1/2" 7-829-1200 4.0551 2800 110

BISON 4-Jaw Scroll Chucks with Two-Piece Hard Reversible Jaws

Each chuck is provided with:

• 1 Set of hard master jaws• 1 Set of hard top reversible jaws• 1 Chuck wrench• 1 Set of mounting bolts• 2 Hex keys• Eye bolts for chuck sizes 15-3/4"diameter and larger

ChuckDia

PartNumber

HoleDia

RPMmax

Wtlbs

6-1/4" 7-841-0600 1.6535 4500 22

8" 7-841-0800 2.1654 4000 39

10" 7-841-1000 2.9921 3500 55

12-1/2" 7-841-1200 4.0551 2800 110

15-3/4" 7-841-1600 5.3543 2000 187

20" 7-841-2000 7.480 1200 320

25" 7-841-2500 9.921 1000 551

Type 3504

Type 3705

4-Jaw Self-Centering Chucks withTwo-Piece Hard Reversible Jaws

• Steel Body• Less friction between jaw and guide• Greater Clamping Force• Less wear due to direct pressure

PartNumber

ChuckDiaA

ChuckDiaA

MaxSpeed

MaxTorqueon Key

GrippingForce Wt Max

ClampingMin

Clamping B C D Emax F G H L P

mm in RPM lbt*ft lbf lbs inches

3-841-2800 700 28 873

516.3

26302.6 751.8 27.5591 3.3465 5.7087 25.9843 24.8031 8.8583

3.22838.5827

6xM20

2.36220.31503-841-3200 800 32 764 27651.5 914.9 31.4961 4.9213 6.1024 29.9213 28.7402 10.5512

3-841-3600 900 36 679

28101.1

1256.6 35.4331 5.90556.4961

33.4646 31.8898 14.7638 6xM22

3-841-4000 1000 40 611 1609.3 39.3701 7.874037.4016

35.8268 15.3543

11.65356xM24

0.39373-841-4800 1200 48 509 2711.6 47.24419.4488

7.28353.1496 16.9291 2.9528

3-841-6300 1600 48 382 6327.2 62.9921 7.4803 41.3386 6xM30


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L

T-slot Dimensions

BISON 3-Jaw Chuck T-slot Dimensionsfor 20" and 25" Diameter Chucks Only

BISON 3 and 4-Jaw Self-Centering Scroll ChucksPrincipal Dimensions – Back Mounting

ChuckDiaD

F E d C H h

4" 3.2677 2.7559 0.7874 .1181 1.969 -

5" 4.2520 3.7402 1.3976

.1575

2.422 1.575

6-1/4" 5.5118 4.9213 1.6535 2.756 1.693

8" 6.9291 6.2992 2.1654 3.150 1.772

10" 8.8189 7.8740 2.9921

.1969

3.543 2.087

12-1/2" 11.2598 10.2362 4.0551 3.937 2.244

15-3/4" 14.2519 12.9921 5.3543 4.331 2.639

20" 18.0314 16.5354 7.4803 4.685 3.150

25" 23.0709 21.4567 9.9212 .2756 5.079 3.425

32" 14.5000 17.7165 12.5984 .7874 6.2598 2.7559

Backplate Mounting Bolts

PartNumber

ThreadM L No. of

Bolts

7-897-105 M8 x 1.250.98

3

7-897-108 M10 x 1.5

6

7-897-110 M12 x 1.751.18

7-897-112

M16 x 27-897-125 1.57

7-897-584 1-8 6.00

ChuckDia A B C E T-slot

Length

20" .9055" .5512" .2362" .8268" 4.51"

25" 1.1811" .7087" .4724" 1.0236" 5.08"

See page 25 for clamping ranges



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CHUCKS

DIR

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MOUNT


Type A2 Type A1

Type A

ChuckDia

PartNumber

TaperSize

HoleDiameter

d

RPMmax

Wtlbs

B(A2)

B1(A1) G C/C1* H h

6-1/4" 7-821-0615 A1-5 1.6535 4500 22 – 2.4374 3.2505 .563 2.6772 1.693

8"7-821-0815 A1-5 1.6535

4000 42– 2.4374 3.2505 .563

3.0709 1.7727-821-0816 A1-6 2.1653 – 3.2500 4.1880 .625

10"7-821-1016 A1-6 2.1653

3500 71– 3.2500 4.1880 .625

3.5039 2.0877-821-1018 A1-8 2.9921 – 4.3750 5.5007 .688

12-1/2"7-821-1226 A2-6 4.0551

2800 1215.2520 – 4.1880 .630

3.7874 2.2447-821-1228 A1-8 3.1496 – 4.3750 5.5007 .688

15-3/4"7-821-1628 A2-8 5.3543

2000 2036.7480 – 5.5007 .709

4.2520 2.6397-821-1629 A1-11 5.1181 – 6.5000 7.7507 .750

20"7-821-2028 A2-8 5.3543

1200 3536.7480 – 5.5007 .709

4.6850 3.0917-821-2029 A2-11 7.4803 9.2520 – 7.7507 .787

25"7-821-2529 A2-11 7.4803

1000 6289.2520 – 7.7507 .750

5.0787 3.4257-821-2530 A2-15 9.9213 13.000 – 11.251 .813

Mounting Bolts M

PartNumber Thread L Qty

7-897-520 7/16-14 2-3/8

37-897-521 7/16-142-3/4

7-897-532 1/2-13

7-897-533 1/2-13 3-1/8

6

7-897-542 5/8-11 2-3/4

7-897-535 1/2-13 4

7-897-543 5/8-11 3-1/8

7-897-550 5/8-114-1/2

7-897-563 3/4-10

7-897-551 5/8-114-3/4

7-897-568 3/4-10

7-897-566 3/4-10 5-5/16

7-897-571 7/8-9 5-1/8

*C=C1, depth of counterbore

L

BISON 3-Jaw, Type A1/A2, Direct Mount Self-Centering Scroll Chuckswith Two Piece Hard Reversible Jaws

• Forged steel body• High speed• Type A1 spindle has a 2 bolt hole pattern,inside (size B1), and outside the taper (size B).Either an A1 or A2 chuck will fit

• Type A2 spindle has 1 bolt pattern, outside the taper(size B) Only an A2 chuck will fit

Type 3515


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BISON 3-Jaw, Type D, Direct Mount Self-Centering Scroll Chuckswith Two Piece Hard Reversible Jaws

• Forged steel body• High speed• No machining required

ChuckDiaD

PartNumber

TaperSize

HoleDiad

RPMmax

Wtlbs B G C H h

6-1/4"

7-823-0633 D1-3

1.6535 4500 20

2.7795 2.1250.5118

2.6772 1.6937-823-0634 D1-4 3.2520 2.5005

7-823-0635 D1-5 4.1260 3.7505 .5629

8"7-823-0835 D1-5

2.1653 4000 424.1260 3.2505 .5629

3.0719 1.7727-823-0836 D1-6 5.2520 4.1880 .6299

10"7-823-1036 D1-6

2.9921 3500 715.2520 4.1880 .6299

3.5039 2.0877-823-1038 D1-8 6.7480 5.5007 .7087

12-1/2"

7-823-1236 D1-6

4.0551 2800 112

5.2520 4.1880 .62993.7874

2.2447-823-1238 D1-8 6.7480 5.5007 .7087

7-823-1239 D1-11 9.2520 7.7507 .7874 4.3976

15-3/4"7-823-1638 D1-8

5.3543 2000 2236.7480 5.5007 .7087

4.2570 2.6397-823-1639 D1-11 9.2520 7.7507 .7874

20"7-823-2038 D1-8 5.3543

1200 3316.7480 5.5007 .7087

4.6850 3.1507-823-2039 D1-11 7.5984 9.2520 7.7507 .7874

25"7-823-2538 D1-8 5.3543

1000 6046.7480 5.5007 .7087

5.0787 3.4257-823-2539 D1-11 7.4803 9.2520 7.7507 .7874

Camlock Studs

Part Number OD Thread Qty

7-899-103 9/16 M10x13

7-899-104 5/8 M10x17-899-105 3/4 M12x1

6

7-899-105 3/4 M12x17-899-106 7/8 M16x1.5

7-899-106 7/8 M16x1.5

7-899-108 1 M21.5

7-899-106 7/8 M16x1.5

7-899-108 1 M20x1.5

7-899-111 1-3/16 M22x1.5

7-899-108 1 M20x1.5

7-899-111 1-3/16 M22x1.5

7-899-108 1 M20x1.5

7-899-111 1-3/16 M22x1.5

7-899-108 1 M20x1.5

7-899-111 1-3/16 M22x1.5

CamlockSet Screw

Part Number

7-899-305

7-899-310

Type D

Type 3545



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BISON Rough-Finished Threaded Backplates for Threaded Spindles

ChuckDia

PartNumber

ThreadM A B C D h E Wt

lbs

4"7-871-041 1-10

1.5352.165 1.01500

4.095 .709 .5000 87-871-042 1-1/2-8 2.677 1.51421

5"7-871-051 1-10

1.5352.165 1.01500

5.079 .709 .5000 107-871-052 1-1/2-8 2.677 1.51421

6-1/4"7-871-062 1-1/2-8 1.535

3.1891.51421

6.535 .787.5000

127-871-063 2-1/4-8 1.791 2.26000 .6260

8"7-871-082 1-1/2-8 1.535

3.5831.51421

8.110 .866.5000 12

7-871-083 2-1/4-8 1.791 2.26000 .6260 13

10"7-871-103 2-1/4-8 1.791

4.1732.26000

10.079 .984.6260 22

7-871-104 2-3/8-6 2.047 2.38500 .7480 25

12-1/2"7-871-124 2-3/8-6

2.047 4.3312.38500

12.638 1.102 .7480 337-871-125 2-3/4-8 2.76000

NOTE: Rough Finished Backplates, see page 61 for mounting instructions

Rough-Finished Threaded Backplates for Threaded Spindles

ChuckDia

PartNumber

ThreadM A B C D h E Wt

lbs

5 3-871-052 1-1/2"-8 1.535 2.677 1.514 5.079 0.709 0.5 9.9

6¼3-871-062 1-1/2"-8 1.535

3.1891.514

6.535 0.7870.5

11.93-871-063 2-1/4"-8 1.791 2.26 0.626

8 3-871-083 2-1/4"-8 1.791 3.583 2.26 8.11 0.866 0.626 13

Type 8206


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ChuckDia

PartNumber

ThreadD A C B B1 E Wt

lbs

5"7-922-051 M39 x 4

4.923.00 2.00 .75

.626011

7-922-053 2-3/16 - 10 3.11 1.61 .689

6-1/4" 7-922-063 2-3/16 - 10 6.3 3.11 1.61 .768 13

BISON Fully-Machined Threaded Backplates for Threaded Spindles

NOTE: Part number series 7-922- backplates require some machining on the counterboreprojection, see page 61 for more information

Fully-Machined Type D1 Backplates for Plain Back Chucks

ChuckDia

PartNumber

TaperSize

StudDia No. of Studs Hole Dia

C D G A B B1 Wtlbs

53-878-054 D1-4 5/8 3 2.40 3.25 2.50 4.92 1.02 0.87 5.3

3-878-056 D1-6 7/8 6 3.13 5.25 4.19 7.09 1.61 1.43 11.5

6¼ 3-878-064 D1-4 5/8 3 2.40 3.25 2.50 6.30 1.06 0.71 9.5

83-878-084 D1-4 5/8 3 2.40 3.25 2.50

7.871.06 0.71 15.4

3-878-086 D1-6 7/8 6 4.06 5.25 4.19 1.44 1.26 15.4

103-878-106 D1-6 7/8

64.06 5.25 4.19

9.841.44 0.87 24.3

3-878-108 D1-8 1 5.35 6.75 5.50 1.54 1.36 39.7

12½3-878-126 D1-6 7/8

64.06 5.25 4.19

12.401.56

0.94 39.73-878-128 D1-8 1 5.35 6.75 5.50 1.65

Type 8204


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BISON Semi-Machined and Fully Machined Type D1 Backplates• The number of camlock studs needed varies depending on the spindle size; please refer to the table below• Plain back chucks require backplates which may require machining to fit• Designed for direct mounting on camlock spindle nose

** See mounting instructions on page 61*** The projection on the backplate must be sized to fit each chuck

Fully Machined D1 Backplates

Type 8242Type 8240

ChuckDia

TaperSize

Fully Machined*** Semi-Machined**StudDia

No.of

Studs

HoleDiaC

D GPartNumber

DiaA B B1 Wt

lbsPart

NumberDiaA

FlangeThickness

B

Wtlbs

4" D1-4 7-878-044 3.97 1.12 .87 3.65 – – – – 5/8

3

2.40 3.25 2.50

5"D1-3 7-878-053

4.94 1.02.57

5.3– – – – 9/16 2.02 2.78 2.13

D1-4 7-878-054 .87 – – – – 5/8 2.40 3.25 2.50

6-1/4"

D1-3 7-878-063

6.32

1.06 .71

9.5

7-878-0630

6.38

1.02

9.3

9/16 2.02 2.78 2.13D1-4 7-878-064 1.06 .71 7-878-0640 1.14 5/8 2.40 3.25 2.50

D1-5 7-878-065 1.18 1.0 7-878-0650 1.14 3/4 3.13 4.13 3.25

D1-6 7-878-066 1.44 1.32 – – – – 7/8 4.06 5.25 4.19

D1-8 7-878-068* 1.69 1.53 – – – – 1 4.16 6.75 5.50

8"

D1-3 7-878-083

7.89

1.06 .71

15.4

–

8.00

1.73

27

9/16 2.02 2.78 2.13D1-4 7-878-084 1.06 .71 7-878-0840 1.73 5/8 2.40 3.25 2.50

D1-5 7-878-085 1.18 .71 7-878-0850 1.97 3/4

6

3.13 4.13 3.25

D1-6 7-878-086 1.44 1.26 7-878-0860 1.38 7/8 4.06 5.25 4.19

10"

D1-5 7-878-105

9.86

1.18 .87 24.3 7-878-1050

9.96 1.93 35

3/4 3.13 4.13 3.25D1-6 7-878-106 1.44 .87 24.3 7-878-1060 7/8 4.06 5.25 4.19

D1-8 7-878-108 1.54 1.36 39.7 7-878-1080 1 5.35 6.75 5.50

12-1/2"

D1-6 7-878-126

12.42

1.56 .94

39.7

7-878-1260

12.52

2.76

49

7/8 4.06 5.25 4.19D1-8 7-878-128 1.65 .94 7-878-1280 2.17 1 5.35 6.75 5.50

D1-11 7-878-129 1.85 1.36 7-878-1290 2.17 1-3/16 7.59 9.25 7.75

15-3/4"

D1-6 7-878-166

15.77

1.44

1.10 79

7-878-1660

15.94

2.17

93

7/8 4.06 5.25 4.19D1-8 7-878-168 1.54 7-878-1680 2.76 1 5.35 6.75 5.50

D1-11 7-878-169 1.85 7-878-1690 1.96 1-3/16 7.59 9.25 7.75

20"D1-8 7-878-208

19.701.54

1.14 1327-878-2080

19.881.81

1591 5.35 6.75 5.50

D1-11 7-878-209 1.85 7-878-2090 2.83 1-3/16 7.59 9.25 7.75

25”D1-11 7-878-259

24.821.85

1.14 2327-878-2590 25.00 2.83 232 1-3/16 7.59 9.25 7.75

D1-15 7-878-265* 1.97 – – – – 1-3/8 11.00 13.0 11.25


Semi-Machined D1 Backplates



ECISIO

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59Quality Products • Partnership • Industry Experts PRECISION SCROLL CHUCKS

BISON Semi-Machined and Fully-Machined Type A1/A2 Backplates• For plain back chucks• Designed for direct mounting on A1 and A2 spindle nose• May be used for both scroll and independent chucks• Provided with spindle mounting bolts• See mounting instructions on page 61

Chuck Dia TaperSize

Fully MachinedPart Number ***

Wtlbs

Semi MachinedPart Number **

Wtlbs A B Thru Hole

C D E

5"A-6 7-873-0560* 5.3 7-873-056

6.5 51.02 2.13 5.25 4.19

A-8 – – 7-873-058 1.81 3.15 6.75 5.5

6-1/4" A-5 – – 7-873-065 6.5 6.4 1 3.13 4.125 3.25

8"A-5 7-873-0850* 18 7-873-085 19

7.991.5

2.174.125 3.25

A-6 – – 7-873-086 15.5 1.3 5.25 4.19

10"A-6 – – 7-873-106 38

9.961.3

3.175.25 4.19

A-8 – – 7-873-108 33 1.97 6.75 5.5

12-1/2"A-6 – – 7-873-126 45

12.521.3

4.065.25 4.19

A-8 – – 7-873-128 62 1.77 6.75 5.5

15-3/4"A-8 – – 7-873-168 85

15.941.7

5.366.75 5.5

A-11 7-873-169H 51 7-873-169 141 2.95 9.25 7.75

20"A-11 – – 7-873-209* 133

19.88 1.777.59

9.25 7.75A2-15 7-873-2095 71 – – –

25"

A-11 – – 7-873-259* 158

25

1.77 7.59 9.25 7.75

A-15 7-873-2600 154 7-873-2595 2182.205

11.1 13 11.25

A-20 – – 7-873-2598* 156 16 18.25 16.25

36" 40" 49"A2-15 – – 7-873-3615* 242

21.852.78

7.4813 11.25

A2-20 – – 7-873-3620* 249 3.15 18.25 16.25

* A2 only** Semi Machined backplates should be the first alternative for independent chucks*** Fully Machined backplates supplied with spindle mounting bolts

NOTES: Backplates require some machining on the counterbore projection, see page 61 for more informationThe projection on the backplate must be sized to fit each chuck

Type 8212Type 8210

Semi-MachinedType 8212

Fully MachinedType 8210



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Type 8250

Semi-Machined Type A1/A2 Backplates

Designed for direct mounting on A1 and A2 spindle noses• For plain back chucks• Designed for direct mounting on A1 and A2 spindle nose• May be used for both scroll and independent chucks• Provided with spindle mounting bolts• See mounting instructions on page 61

ChuckDia

PartNumber

TaperSize

ThreadDia A B C B1 Wt

lbs

5" 7-879-051 L00 3-3/4"-6 4.92 2.13 2.2 0.71 10

6-1/4"7-879-061 L00 3-3/4"-6

6.322.13 2.2

0.71 137-879-062 L0 4-1/2"-6 2.52 2.6

8"

7-879-081 L00 3-3/4"-6

7.91

2.13 2.2

0.71 227-879-082 L0 4-1/2"-6 2.52 2.6

7-879-083 L1 6"-6 2.99 3.35

10"

7-879-101 L00 3-3/4"-6

9.88

2.13 2.20

0.83 337-879-102 L0 4-1/2"-6 2.52 2.60

7-879-103 L1 6"-6 2.99 3.35

7-879-104 L2 7-3/4"-5 3.50 4.29

12-1/2"

7-879-122 L0 4-1/2"-6

12.44

2.52 2.60

1.10 577-879-123 L1 6"-6 2.99 3.35

7-879-124 L2 7-3/4"-5 3.50 4.29

15-3/4"

7-879-162 L0 4-1/2"-6

15.83

2.52 2.60

1.10 957-879-163 L1 6"-6 2.99 3.35

7-879-164 L2 7-3/4"-5 3.50 4.29

7-879-165 L3 10-3/8"-4 4.02 5.43

20"7-879-204 L2 7-3/4"-5

19.763.50 4.29

1.14 1597-879-205 L3 10-3/8"-4 4.02 5.43

25"7-879-254 L2 7-3/4"-5

24.823.78 4.29

1.38 3977-879-255 L3 10-3/8"-4 4.02 5.43

BISON Fully-Machined Type L Backplates

• For plain back, self-centering chucks• For direct mounting on type L spindle nose• See mounting instructions on page 61

ChuckDia

PartNumber

TaperSize A B C D E Wt

lbs

6¼ 3-873-065 A-5 6.4 1 3.13 4.125 3.25 6.5

83-873-085 A-5

7.991.5

1.504.125 3.25 19

3-873-086 A-6 1.3 5.252 4.19 15.5

103-873-106 A-6

9.961.3

3.170.207 4.19 38

3-873-108 A-8 1.97 6.75 5.50 33

12½3-873-126 A-6

12.521.3

4.065.252 4.19 45

3-873-128 A-8 2.17 6.75 5.50 62


Precision Scroll ChucksIN

STRUCTIO

NS

FOR

MOUNTIN

GBACKPLA

TES

61Quality Products • Partnership • Industry Experts PRECISION SCROLL CHUCKS

WARNING: READ CARFULLY BEFORE MOUNTING BACK PLATES ONTO SPINDLES

Installation Instructions for Mounting Backplates onto SpindlesAll Bison semi-machined and fully machined backplates will have the mounting dimensions for theirrespective spindles fully machined. The fully machined backplates are designed for scroll plain back chucks,which are .030", etc. They can be used on other styles/models, but the existing bolt hole patterns haveto be reviewed for mounting interference.

In all cases, the backplates will have to be finished/machined on the mounting projection, both onthe OD (approximately .030" oversize) and the length.

1. With an indicator check the spindle to see if there is any radial or axial runout.Refer to the chuck manual for spindle nose accuracy.

2. Wipe the protective factory grease off the backplate, then mount it to the respective spindlemaking sure that all fastening components are torqued appropriately.

3. When initially installing the bolts, leave finish tightening to a second pass, and make sure toalternate to the opposite bolt to evenly distribute pressure across the spindle’s taper. Using thedial indicator, recheck the radial and axial backplate runout. If there are major differences,loosen the backplate and refit it.

4. Once the backplate is in place, a technique used to further ensure a close tolerance to thechuck would be to blue the front face of the backplate and take a skim cut. In most casesthis is not required.

5. Next, measure the OD and depth of the counterbore on the backside of the chuck; these willbecome your working dimensions for final sizing. Depending on the size of the chuck, the ODshould be .001" to .005" less than the OD dimension and the length can be approximately .015"to .030" shorter. This minus tolerance will eliminate the possibility of the projection pressingagainst the back of the chuck, which can impact the scroll and create unnecessary friction withthe jaw teeth. This could make it difficult for the wrench to turn the pinions and in turn the jaws.Machine the backplate until a snug fit has been achieved; this may require removing the backplate.

Note: The purpose of this backplate projection to the chuck counterbore is to relievethe stress on the mounting bolts, and is a critical part of maintaining chuck concentricity.

6. The semi-machined backplates recommended for independent chucks do not have mountingholes, and will have to be machined to the chucks bolt hole pattern. Dimensions are availablein the BISON catalog, online at www.toolmex.com, or by calling a customer service representativeat 800-992-4766 or 508-653-8897.

7. Bolt hole patterns may require removal of the backplate for machining. Once machined, followthe procedures from steps 2 and 3 before mounting.

8. Re-indicate the chuck for basic run out on the OD and Face.

9. Take a round piece of ground stock and enclose the jaws. Then, indicate the part for runout atthe jaws, ½ way across its length, and at the end. This will give you an idea of the parametersthat will have to be accounted for part production.



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BISON Hard Master Jaws for 3 and 4-Jaw Steel Scroll Chucks• American Standard Tongue and Groove Jaws• Sold in sets

ChuckDia

3-Jaw 4-Jaw K H G F J S L D E B OALA

ThreadM

3-Jaw 4-JawPart Number inches Wt of Set – lbs

5" 7-885-305 – 5/8 57/64.4996 5/16

.1575

.126

.4724.3150 .3150 .7874

2.1259 5/16-18 0.93 –6-1/4" 7-885-306 7-885-406 3/4 1-1/8

.55112.5590

3/8-161.20 1.60

8" 7-885-308 7-885-408 7/8 1-3/8 .3543 .3937 .9843 3.1740 2.10 2.8010" 7-885-310 7-885-410 1-1/16 1-9/16

.7496 1/2

.6299.4331

.47241.1024 3.6220

1/2-133.20 4.27

12-1/2" 7-885-312 7-885-412 1-1/4 1-7/8 .5000 1.2598 4.3307 5.10 6.8015-3/4" 7-885-316 7-885-416

1-1/2 2-1/4 .2835

.8661 .5906

.5512

1.4173 5.1181 5/8-11 7.30 –20" 7-885-320 7-885-420

1.2598 .62991.5748 6.5351

3/4-1014.4 –

25" 7-885-325 7-885-4251.9685 8.2677

27.1 –32" 7-885-332 –

5" to 10" Diameters

20" Diameter 25" to 32" Diameters12" and 16" Diameters

All solid jaws and masterjaws are manufactured to Bison’s

rigid specifications


63

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ISION

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PARTS



ChuckDia M H G J K D E F N C B OAL

A O P3-Jaw 4-Jaw

Wt of Set - lbs5" 5/8 57/64

.4996.35 .59

.3129

.157

.1260

.315 1.516 .866 2.205 .57 1.38 0.93 –6-1/4" 3/4 1-1/8

.43 .71.335 1.634 .984 2.638 .71 1.63 1.20 1.60

8" 7/8 1-3/8 .374 1.713 1.063 3.174 .85 2.01 2.10 2.8010" 1-1/16 1-9/16

.7496

.55 .78

.5004

.472 2.023 1.280 3.740 .96 2.32 3.20 4.2712-1/2" 1-1/4 1-7/8 .512 2.165 1.457 4.331 1.04 2.68 5.10 6.8015-3/4"

1-1/2 2-1/4.71 1.0

.2480.532 2.539 1.654

5.0001.06 3.01 7.30 –

20".87 1.3

.689 2.933 1.654 1.97 3.46 14.40 –25" .827 3.228 2.047 2.01 3.50 27.10 –

ChuckDia

3-Jaw 3-JawEnhanced Serration

4-Jaw

Part Number5" 7-883-305 – –

6-1/4" 7-883-306 – 7-883-4068" 7-883-308 – 7-883-40810" 7-883-310 7-883-3100 7-883-410

12-1/2" 7-883-312 7-883-3120 7-883-41215-3/4" 7-883-316 7-883-3160 7-883-41620" 7-883-320 7-883-3120 7-883-42025" 7-883-325 7-883-3250 7-883-425

BISON Hard Top Jaws for 3 and 4-Jaw Steel Scroll Chucks• American Standard Tongue and Groove Jaws• Sold in sets

Jaw Mounting BoltsSee page 48

Note: Hard Top Jaws are Interchangeable with Bison® Top Jaws

Hard Top Jaws for 3-Jaw Scroll Chucks• American Standard Tongue and Groove Jaws• Sold in 3 piece sets

ChuckDia

PartNumber M H G J K L D E F N1 N2 C B A O P Q Wt

lbs

6¼ 3-883-306 0.7480 1.12600.4996 0.4173 0.6496

0.43310.3126

0.15750.1181

0.3150 0.3543 1.6142 0.9843 2.6378 0.7047 1.6063 0.8268 0.12

8 3-883-308 0.8740 1.3799 0.5118 0.3543 0.3937 1.7717 1.0630 3.1496 0.8465 2.0079 0.9449 0.16

10 3-883-310 1.0630 1.5669

0.74960.5394 0.8268

0.5512

0.5000

0.4528 0.4921 2.0276 1.2992 3.8189 0.9724 2.3228 1.0039 0.28

12½ 3-883-312 1.2500 1.8740 0.5906 0.4921 0.5315 2.1654 1.4567 4.3307 1.0354 2.6811 1.1024 0.41

15¾ 3-883-316 1.5000 2.2500 0.6890 1.0236 0.7283 0.2362 0.5315 0.5709 2.5394 1.6535 5.0000 0.9567 2.9724 1.2795 0.61



ECIS

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ChuckDia

3-Jaw 4-Jaw C L B F E N P O Hard Solid JawsWt of Set - lbs

Part Number inches 3-Jaw 4-Jaw

4" 7-881-304 – 1.2598 1.6535 .5906 .2362 .2362 .2756 1.063 .433 .58 –

5" 7-881-305 – 1.5748 2.0079 .7874 .3150.3150

.3150 1.319 .512 1.2 –

6-1/4" 7-881-306 7-881-406 2.0866 2.7559 .7874 .3150 .3937 1.772 .748 2.4 3.2

8" 7-881-308 7-881-408 2.1260 3.3465 .9843 .3543 .3937 .4724 2.244 .906 3.2 4.3

10" 7-881-310 7-881-410 2.4803 4.1339 1.1024 .4331.4724

.5512 2.736 1.102 5.2 7.0

12-1/2" 7-881-312 7-881-412 2.8740 4.9213 1.2598 .5000 .7087 3.268 1.358 8.7 12

15-3/4" 7-881-316 – 3.6220 5.7087 1.4173 .5906

.5512

.8661 3.898 1.417 16 –

20" 7-881-320 – 3.9370 7.0866 1.5748.6299

1.0236 4.705 1.969 22 –

25" 7-881-325 – 4.3307 8.8583 1.9685 1.1024 5.866 2.598 38 –

BISON I.D. Hard Solid Jaws for 3 and 4-Jaw Steel Scroll Chucks• Sold in sets

ChuckDia

3-Jaw 4-Jaw C L B F E N P O Hard Solid JawsWt of Set - lbs

Part Number inches 3-Jaw 4-Jaw

4" 7-880-304 – 1.2598 1.6535 .5906 .2362 .2362 .2756 1.063 .433 .58 –

5" 7-880-305 – 1.5748 2.0079 .7874.3150 .3150

.3150 1.319 .512 1.2 –

6-1/4" 7-880-306 7-880-406 2.0866 2.7559 .7874 .3937 1.772 .748 2.4 3.2

8" 7-880-308 7-880-408 2.1260 3.3465 .9843 .3543 .3937 .4724 2.244 .906 3.2 4.3

10" 7-880-310 7-880-410 2.4803 4.1339 1.1024 .4331.4724

.5512 2.736 1.102 5.2 7.0

12-1/2" 7-880-312 7-880-412 2.8740 4.9213 1.2598 .5000 .7087 3.268 1.358 8.7 12

15-3/4" 7-880-316 – 3.6220 5.7087 1.4173 .5906

.5512

.8661 3.898 1.417 16 –

20" 7-880-320 – 3.9370 7.0866 1.5748.6299

1.0236 4.705 1.969 22 –

25" 7-880-325 – 4.3307 8.8583 1.9685 1.1024 5.866 2.598 38 –

BISON O.D. Hard Solid Jaws for 3 and 4-Jaw Steel Scroll Chucks• Sold in sets


65

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ChuckDia

3-Jaw 4-JawC L B F E N P O

Soft Solid JawsWt of Set - lbs

Part Number 3-Jaw 4-Jaw

4" 7-882-304 – 1.2598 1.6535 .5906 .2362 .2362 .2756 1.063 .433 .86 –

5" 7-882-305 – 1.5748 2.0079.7874 .3150 .3150

.3150 1.319 .512 1.7 –

6-1/4" 7-882-306 7-882-406 2.0866 2.7559 .3937 1.772 .748 3.3 4.4

8" 7-882-308 7-882-408 2.1260 3.3465 .9843 .3543 .3937 .4724 2.244 .906 5.3 7.1

10" 7-882-310 7-882-410 2.4803 4.1339 1.1024 .4331.4724

.5512 2.736 1.102 9.0 12

12-1/2" 7-882-312 7-882-412 2.8740 4.9213 1.2598 .5000 .7087 3.268 1.358 13 17

15-3/4" 7-882-316 – 3.6220 5.7087 1.4173 .5906

.5512

.8661 3.898 1.417 16 –

20" 7-882-320 – 3.9370 7.0866 1.5748.6299

1.0236 4.705 1.969 33 –

25" 7-882-325 – 4.3307 8.8583 1.9685 1.1024 5.866 2.598 57 –

BISON Soft Solid Jaws for 3 and 4-Jaw Steel Scroll Chucks• Sold in sets

ChuckDia Part Number A B C D E F G H I J

BoltSizeM

Wtper Pclbs

5" 7-884-305 2.520 0.866 1.520

.3129

0.5910 1-1/4

.500

1.000

.1260.283

5/16-18 .66

6-1/4" 7-884-306 3.071 1.000 1.634 0.8386 1-1/2 1.3393/8-16

1.01

8" 7-884-308 3.543 1.063 1.713 0.9488 1-3/4 1.575 1.43

10" 7-884-310 4.173 1.280 2.028

.5000

1.0827 2-3/16

.750

1.7721/2-13

2.54

12-1/2" 7-884-312 4.724 1.457 2.165 1.2087 2-1/2 2.087

.2480

3.53

15-3/4" 7-884-316 5.512 1.654 2.539 1.3443

3 2.480 .406

5/8-11 4.85

20" 7-884-320 5.512 1.654 2.9331.3543 3/4-10

5.29

25" 7-884-325 6.299 2.047 3.288 9.26

BISON Soft Top Jaws for 3 and 4-Jaw Steel Scroll Chucks• American Standard Tongue and Groove Jaws• Sold by piece



ECIS

ION

SPARE

PARTS


Pinion**

PartNumber D H Wt

lbs

7-886-304 0.98 1.4 0.12

7-886-505 0.98 1.44 0.13

7-886-506 1.1 1.57 0.18

7-886-508 1.2 1.99 0.37

7-886-510 1.4 2.36 0.44

7-886-512 1.5 2.85 0.71

7-886-516 1.7 3.66 1.3

7-886-5202

4.45 2.1

7-886-525 5.24 2.5

ChuckDia

Scroll**

Part Number D H Wtlbs

4" 7-887-304 2.74 0.49 0.34

5" 7-887-505 3.7 0.63 0.84

6-1/4" 7-887-506 4.88 0.83 2.03

8" 7-887-508 6.24 0.94 3.62

10" 7-887-510 7.82 1.1 4.54

12-1/2" 7-887-512 10.1 1.2 10.2

15-3/4" 7-887-516 12.9 1.3 22.7

20" 7-887-520 16.4 1.2 36.4

25" 7-887-525 21.3 1.6 66.0

BISON Spare Parts for 2, 3, and 4-Jaw Chuckswith Forged Steel Body

** For steel body chucks only with 5" thru 25"* Pinion screw

BISON Enhanced Serration Jaws for Universal and Precision Scroll Chucks• Jaw gripping surfaces serration 1/8"• Sold in sets• Jaws are recommended for heavymachining applications

ChuckDia

PartNumber

10" 7-883-3100

12-1/2" 7-883-3120

15-3/4" 7-883-3160

20" 7-883-3200

25" 7-883-3250

32" 7-883-3250

D = OD DiameterH = HeightL = OAL

Pinion Sleeve

PartNumber ID

– –

7-888-505 0.98

7-888-506 1.1

7-888-508 1.2

7-888-510 1.4

7-888-512 1.5

7-888-516 1.7

7-888-5202

7-888-525

Half Ring

PartNumber D

7-888-904* –

7-888-705 1.52

7-888-706 1.72

7-888-708 1.85

7-888-710 1.94

7-888-712 2.17

7-888-716 2.42

7-888-720 2.76

7-888-725 2.95

BISON Extended and Standard Length Wrenches*

ChuckDia

SquareSize

Extended Length

PartNumber L

4".3543

– –

5" – –

6-1/4".4331

7-889-008L8.5

8"

10".5512

12-1/2" 7-889-012L

15-3/4" .6693 – –

20"

.7480

– –

25" – –

32" – –

* Wrenches are spring loadedfor the operator’s safetyRemoval of the spring is notrecommended and may voidchuck warranty

Standard Length

PartNumber L

7-889-005 3.15

7-889-008 3.94

7-889-012 4.72

7-889-016

5.517-889-025

7-889-032


2, 3, and 4-Jaw Universal Self-Centering Scroll Chucks• These chucks can be used on all types of lathes, and on different kinds of milling,drilling, and CNC attachments

• Chucks come with either American Standard two-piece tongue and groove jaws,or two sets of hard solid jaws, one OD and one ID

• Plain Back and Direct Mount• Semi-steel body• Chuck body is made of high quality cast ironAll guideways and bearing surfaces are precisely machined

• Scroll plate is drop forged of fine alloy steel, and carefully case hardenedThread flanks are ground on both sides

• The jaw’s teeth and guideways are hardened and fully ground on both sides• Pinions are hardened and ground

1. Chuck Body2. Back Cover3. Scroll Plate 7-887-3...4. Pinion 7-886-3...5. Pinion Screw 7-888-9...6. Hard Master Jaws 7-885-3...7. Hard Top Jaws 7-883-3...8. Grease Nipple9. Chuck Mounting Bolts 7-897-...10. Back Cover Mounting Bolts11. ChuckWrench 7-889-0...12 and 13. Jaw Mounting Bolts 7-897-5...

1. Chuck Body2. Back Cover3. Scroll Plate 7-887-3...4. Pinion 7-886-3...5. Pinion Screw 7-888-9...6. Hard Solid ID Jaws 7-881-...7. Hard Solid OD Jaws 7-880-...8. Grease Nipple9. Chuck Mounting Bolts 7-897-...10. Back Cover Mounting Bolts11. ChuckWrench 7-889-0...

32" Diameter ChuckSee page 93

Chucks with Two-PieceReversible Jaws

Chucks with Two Sets ofHard Solid Jaws, OD and ID

Spare Parts: See page 92Backplates: See pages 78-85

Universal Scroll ChucksUNIV

ERSA

LSC

ROLL

CHUCKS

67Quality Products • Partnership • Industry Experts UNIVERSAL SCROLL CHUCKS



ERSA

LSC

ROLL

CHUCKS

68 UNIVERSAL SCROLL CHUCKS Toolmex Customer Service 508-653-8897 • 800-992-4766 • www.toolmex.com

BISON 3-Jaw Scroll Chuckswith Two-Piece Hard Reversible Jaws

Chucks are provided with:

• 1 Set of hard master jaws• 1 Set of hard top reversible jaws• 1 Chuck wrench• 1 Set of mounting bolts• 2 Hex keys• Eye bolts for chuck sizes 15-3/4"and larger

2, 3, and 4-Jaw Universal Self-Centering Scroll Chucks• Semi-steel body• 3 Pinion design• Plain back chucks• Backplates required

Front View

Back View

ChuckDia

PartNumber

HoleDia

Max HoleEnlargement

RPMmax

Wtlbs

5" 7-800-0500 1.2598 1.2598 3200 11

6-1/4" 7-800-0600 1.6535 1.8110 3000 22

8" 7-800-0800 2.1653 2.5591 2500 39

10" 7-800-1000 2.9921 3.4646 2000 55

12-1/2" 7-800-1200 4.0551 4.3307 1500 110

15-3/4" 7-800-1600 5.3543 5.5906 1000 187

20" 7-800-2000 7.4803 8.2283 700 320

25" 7-800-2500 9.9213 11.9291 500 551

32" 7-800-3200 10.5120 12.7953 300 886

3-Jaw Scroll Chucks with Two-Piece Hard Reversible JawsChucks are provided with:

• 1 Set of hard master jaws• 1 Set of hard top reversible jaws• 1 Self-ejecting chuck wrench• 1 Set of mounting bolts• 2 Hex keys• Eye bolts provided with 12-1/2"and 15-3/4" chucks

Type 3205

Chuck Dia Part Number Hole Dia RPM max Wt lbs

6-1/4" 3-800-0600 1.7717 3000 19.4

8" 3-800-0800 2.5591 2500 34

10" 3-800-1000 3.1496 2000 57

12-1/2" 3-800-1200 4.0945 1500 104

15-3/4" 3-800-1600 5.3543 1200 157

Chuck Lifting Eye Bolt12-1/2" and 15-3/4" only


69

UNIV

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CHUCKS

Universal Scroll Chucks

Quality Products • Partnership • Industry Experts UNIVERSAL SCROLL CHUCKS

BISON 3-Jaw Scroll Chucks with Hard Solid Jaws

ChuckDia

PartNumber

HoleDia

Max HoleEnlargement

RPMmax

Wtlbs

3-1/4" 7-810-0300 .6299 .6299 4000 3.3

4" 7-810-0400 .7874 .7874 3500 6.17

5" 7-810-0500 1.2598 1.2598 3200 11

6-1/4" 7-810-0600 1.6535 1.8110 3000 22

8" 7-810-0800 2.1653 2.5591 2500 39

10" 7-810-1000 2.9921 3.4646 2000 55

12-1/2" 7-810-1200 4.0551 4.3307 1500 110

15-3/4" 7-810-1600 5.3543 5.5906 1000 187

20" 7-810-2000 7.4803 8.2283 700 320

25" 7-810-2500 9.9213 11.9291 500 551


• 1 Set of hard solid ID jaws• 1 Set of hard solid OD jaws• 1 Chuck wrench• 1 Set of mounting bolts• 2 Hex keys• Eye bolts for chuck sizes 15-3/4"and larger

Type 3204

3-Jaw Scroll Chucks with Hard Solid Jaws


• 1 Set of hard solid ID jaws• 1 Set of hard solid OD jaws• 1 Self-ejecting wrench• 1 Set of mounting bolts• 1 Hex key for mounting bolts• Eye bolts for chuck sizes 12-1/2"and 15-3/4"

Chuck Dia Part Number Hole Dia RPM max Wt lbs

6-1/4" 3-810-0600 1.7717 3000 19.4

8" 3-810-0800 2.5591 2500 34

10" 3-810-1000 3.1496 2000 57

12-1/2" 3-810-1200 4.0945 1500 104

15-3/4" 3-810-1600 5.3543 1200 157



ERSA

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BISON 2-Jaw Scroll Chucks with Soft Top Reversible Jaws2 Pinion design


• 1 Set of hard master jaws• 1 Set of soft top reversible jaws• 1 Chuck wrench• 1 Set of mounting bolts• 2 Hex keys• Semi-steel body• Eye bolts for chuck size 15-3/4"

ChuckDia

PartNumber

HoleDia

Max HoleEnlargement

RPM*max

Wtlbs

6-1/4" 7-830-0600 1.6535 1.8110 3000 22

8" 7-830-0800 2.1654 2.5591 2500 39

10" 7-830-1000 2.9921 3.4646 2000 55

12-1/2" 7-830-1200 4.0551 4.3307 1500 110

15-3/4" 7-830-1600 5.3543 5.5906 1000 187

2, 3 and 4-Jaw Universal Self-Centering Scroll Chucks• Semi-steel body• Plain back chucks• Backplates required

BISON 4-Jaw Scroll Chucks with Hard Solid Jaws3 Pinion design

ChuckDia

PartNumber

HoleDia

Max HoleEnlargement

RPMmax

Wtlbs

5" 7-840-0500 1.2598 1.2598 3200 11

6-1/4" 7-840-0600 1.6535 1.8110 3000 22

8" 7-840-0800 2.1654 2.5591 2500 39

10" 7-840-1000 2.9921 3.4646 2000 55

12-1/2" 7-840-1200 4.0551 4.3307 1500 110

15-3/4" 7-840-1600 5.3543 5.5906 1000 187

20" 7-840-2000 7.480 8.2283 700 320

25" 7-840-2500 9.921 11.9291 500 551

ChuckDia

PartNumber

HoleDia

Max HoleEnlargement

RPMmax

Wtlbs

5” 7-845-0500 1.2598 1.2598 3200 11

6-1/4” 7-845-0600 1.6535 1.8110 3000 22

8” 7-845-0800 2.1654 2.5591 2500 39

10” 7-845-1000 2.9921 3.4646 2000 55

12-1/2” 7-845-1200 4.0551 4.3307 1500 110

15-3/4” 7-845-1600 5.3543 5.5906 1000 187

20” 7-845-2000 7.480 8.2283 700 320


• 1 Set of hard master jaws• 1 Set of hard top reversible jaws• 1 Chuck wrench• 1 Set of mounting bolts• 2 Hex keys• Semi-steel body• Eye bolts for chuck sizes 15-3/4"and larger


• 1 Set of hard solid ID jaws• 1 Set of hard solid OD jaws• 1 Chuck wrench• 1 Set of mounting bolts• 1 Hex key• Semi-steel body• Eye bolts for chuck sizes 15-3/4"and larger

*RPM max is rated for round workpiece ONLY

BISON 4-Jaw Scroll Chucks with Two-Piece Hard Reversible Jaws3 Pinion design

Type 3105

Type 3605

Type 3604


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CH h

ødøD

øF

øE

M

ChuckDiaD

F E d C H h h1

3-1/4" 2.6378 2.2047 0.6299 0.1181 1.732 - 0.512

4" 3.2677 2.7559 0.7874 0.1181 1.969 - 0.669

5" 4.252 3.7402 1.2598 0.1575 2.205 1.575 0.787

6-1/4" 5.5118 4.9213 1.6535 0.1575 2.539 1.693 1.26

8" 6.9291 6.2992 2.1654 0.1575 2.953 1.772 1.142

10" 8.8189 7.874 2.9921 0.1969 3.347 2.087 1.339

12-1/2" 11.2598 10.2362 4.0551 0.1969 3.701 2.244 1.693

15-3/4" 14.2519 12.9921 5.3543 0.1969 4.134 2.639 2.165

20" 18.0314 16.5354 7.4803 0.1969 4.724 3.15 2.362

25" 23.0709 21.4567 9.9212 0.2756 5.315 3.425 2.756

32" see page 93


PartNumber

ThreadM L No. of

Bolts

7-897-103 M6 x 1

0.98

37-897-105 M8 x 1.25

7-897-108 M10 x 1.5

6

7-897-110 M12 x 1.751.18

7-897-112

M16 x 27-897-125 1.57

7-897-132 see page 93

BISON Principal Dimensions for 2-Jaw Chucks – Back Mounting

BISON Principal Dimensions for 3 and 4-Jaw Chucks – Back Mounting

Principal Dimensions 3-Jaw Chucks

ChuckDiaD

F E d C HTop Jaws

h Width

6-1/4" 5.5118 4.9213 1.6535 .1575 2.756 1.697 1.575

8" 6.9291 6.2992 2.1654 .1575 3.150 1.776 1.575

10" 8.8189 7.8740 2.9921 .1969 3.543 2.071 1.850

12-1/2" 11.2598 10.2362 4.0551 .1969 3.937 2.240 2.047

15-3/4" 14.2519 12.9921 5.3543 .1969 4.331 2.598 2.047


PartNumber

ThreadM

No. ofBolts

7-897-108 M10 x 1.5

67-897-110 M12 x 1.75

7-897-112M16 x 2

7-897-125

see page 25 for clamping ranges for 3 and 4-Jaw Bison chucks

ChuckDia D

EF d H h C Bolt

Size M(H7)

6-1/4" 4.9213 5.5118 1.7717 2.5591 1.73230.1575 6xM10

8" 6.2992 6.9291 2.5591 2.9528 1.8504

10" 7.8740 8.8189 3.1496 3.1496 2.1457

0.1969

6xM12

12-1/2" 10.2362 11.2598 4.0945 3.5433 2.30316xM16

15-3/4" 12.9921 14.2520 5.3543 3.9370 2.6378



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BISON 3-Jaw, Type A1 and A2, Direct Mount Chuckswith Two Piece Hard Reversible Jaws

• Semi-steel body• Type A1 spindle has a 2 bolt hole pattern, inside and outside the taper. Either an A1 or A2 chuck will fit• Type A2 spindle has a 1 bolt pattern outside the taper. Only an A2 chuck will fit

ChuckDiaD

PartNumber

TaperSize

HoleDiad

Max HoleEnlargement

RPMmax

Wtlbs

B(A2)

B1(A1) G C/C1 H h

6-1/4'' 7-801-0615 A1-5 1.6535 1.8110 3000 22 – 2.4374 3.2505 0.563 3.2087 1.693

8''7-801-0815 A1-5 1.6535

2.5591 2500 42– 2.4374 3.2505 0.563

3.5827 1.7727-801-0816 A1-6 2.1653 – 3.2500 4.188 0.625

10''

7-801-1015 A2-5 2.9921 2.9921

2000 71

4.1260 – 3.2505 0.563

4.0748 2.0877-801-1016 A1-6 2.16353.4646

– 3.2500 4.188 0.625

7-801-1018 A1-8 2.9921 – 4.3750 5.5007 0.688

12-1/2''7-801-1216 A2-6 4.0551 4.0551

1500 1215.2520 – 4.188 0.63

4.6338 2.2447-801-1218 A1-8 3.1496 4.3307 – 4.3750 5.5007 0.688

15-3/4''

7-801-1616 A2-6 4.0551 4.0551

1000 203

5.2520 – 4.188 0.63

5.0591 2.6397-801-1618 A2-8 5.3543 5.3543 6.7480 – 5.5007 0.709

7-801-1619 A1-11 5.1181 5.5906 – 6.5000 7.7507 0.75

20'' 7-801-2029 A2-11 7.5905 7.5905 700 353 9.2520 – 7.7507 0.787 5.748 3.091

25''7-801-2511 A2-11

7.48037.5905

500 6289.2520 – 7.7507 0.75

6.496 3.4257-801-2515 A2-15 11.00 13.000 – 11.251 0.813

32'' 7-801-3220 A2-20 12.598 12.598 300 847 18.25 – 16.252 0.8661 7.0866 3.425

Chuck Mounting Bolts

PartNumber Thread L No. of

Bolts

7-897-521 7/16-14 2-3/4

37-897-522 7/16-143-1/8

7-897-533 1/2-13

7-897-524 7/16-14 4-1/8

6

7-897-534 1/2-13 3-1/2

7-897-545 5/8-11 3-1/2

7-897-537 1/2-13 4-3/4

7-897-548 5/8-11 4-1/4

7-897-552 1/2-13 5

7-897-552 5/8-11 5

7-897-564 3/4-10 4-1/4

7-897-567 3/4-10 6

7-897-569 3/4-10 7

7-897-574 7/8-9 6

7-897-584 1-8 6

Type A

Type A1 MountBolt Hole Pattern

L

Type A2 MountBolt Hole Pattern

Type 3215


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3-Jaw Chucks, Type A1 and A2, Direct Mount

2-Piece Hard Reversible Jaws

• All chucks with A1 mount can be installedon A1 spindle nose only

• All chucks with A2 mount can be installed on eitherA1 or A2 spindle noses

Standard Parts

• 2-Piece hard reversible jaws• 1 Self-ejecting wrench• 1 Set of mounting bolts• 1 Hex key for mounting bolts• 1 Hex key for jaw bolts• Eye bolts provided with 12-1/2" and 15-3/4" chucks

Type A1 Mount Bolt Hole Pattern Type A2 Mount Bolt Hole Pattern

ChuckDia D

PartNumber

TaperSize

HoleDia d

B(A2)

B1(A1) G C H h

Chuck Mounting Bolts RPMmax

WtlbsThread L Qty

6-1/4" 3-801-0615 A1-5 1.6535 – 2.4374 3.2504 0.5630 3.2087 1.6929 7/16-14 2-3/4

3

3000 22

8"3-801-0815 A1-5 1.6535 – 2.4374 3.2504 0.5630

3.6220 1.85047/16-14

3-1/8 2500 423-801-0816 A1-6 2.1654 – 3.2500 4.1880 0.6250 1/2-13

10"

3-801-1015 A2-5 2.9921 4.1260 - 3.2504 0.5630

3.8976 2.1457

7/16-14

4-1/8

6

2000713-801-1016 A1-6 2.1654 – 3.2500 4.1880 0.6250 1/2-13

3-801-1018 A1-8 2.9921 – 4.3750 5.5008 0.6880 5/8-11

12-1/2"3-801-1216 A2-6 3.9370 5.2520 - 4.1880 0.6303

4.4094 2.30311/2-13 4-3/4

1500 1213-801-1218 A1-8 3.1496 – 4.3750 5.5008 0.6880 5/8-11 4-3/16

15-3/4" 3-801-1619 A1-11 4.9213 – 6.5000 7.7507 0.7500 4.8031 2.6378 3/4-10 4-1/4 1000 203

Type A

Spindle Nose

L


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ChuckDiaD

PartNumber

TaperSize

HoleDiad

Max HoleEnlargement

RPMmax

Wtlbs B G C H h

Camlock Studs

Dia Thread No. ofStuds

5" 7-803-0534 D1-4 1.2598 1.2598 3200 11 3.2520 2.5005 .5118 2.7559 1.575 5/8 M10 x 1

36-1/4"

7-803-0633 D1-31.6535 1.9685 3000 20

2.7795 2.1250.5118 3.2087 1.693

9/16M10 x 1

7-803-0634 D1-4 3.2520 2.5005 5/8

8"

7-803-0833 D1-3 2.0275 2.0275

2500 42

2.7795 2.1250.5118

3.5827 1.772

9/16 M10 x 1

7-803-0834 D1-4

2.1653

2.3622 3.2520 2.5005 5/8 M10 x 1

7-803-0835 D1-52.5591

4.1260 3.2505.5629

3/4 M12 x 1

6

7-803-0836 D1-6 5.2520 4.1880 7/8 M16 x 1.5

10"

7-803-1035 D1-5

2.9921

2.9921

2000 71

4.1260 3.2505 .5629

4.0748 2.087

3/4 M12 x 1

7-803-1036 D1-63.4646

5.2520 4.1880 .6299 7/8 M16 x 1.5

7-803-1038 D1-8 6.7480 5.5007 .7087 1 M20 x 1.5

12-1/2"

7-803-1236 D1-6

4.0551

4.0551

1500 112

5.2520 4.1880 .6299 4.6338

2.244

7/8 M16 x 1.5

7-803-1238 D1-84.3307

6.7480 5.5007 .7087 4.6338 1 M20 x 1.5

7-803-1239 D1-11 9.2520 7.7507 .7874 5.5118 1-3/16 M22 x 1.5

15-3/4"

7-803-1636 D1-6 4.0551 4.0551

1000 223

5.2520 4.1880 .6299

5.0591 2.639

7/8 M16 x 1.5

7-803-1638 D1-85.3543

5.3543 6.7480 5.5007 .7087 1 M20 x 1.5

7-803-1639 D1-11 5.5906 9.2520 7.7507 .7874 1-3/16 M22 x 1.5

20"7-803-2038 D1-8 5.3543 5.3543

700 3316.7480 5.5007 .7087

5.7480 3.1501 M20 x 1.5

7-803-2039 D1-11 7.5984 7.5984 9.2520 7.7507 .7874 1-3/16 M22 x 1.5

25" 7-803-2539 D1-11 7.5984 11.9291 500 604 9.2520 7.7507 .7874 6.4960 3.425 1-3/16 M22 x 1.5

BISON 3-Jaw, Camlock Type D1, Direct Mount Chuckswith Two-Piece Jaws

• Semi-steel body

Type D

Type 3245



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2-Piece Hard Reversible Jaws

Standard Parts

• 2-Piece hard reversible jaws• 1 Self-ejecting wrench• 1 Set of mounting bolts• 1 Hex key for mounting bolts• 1 Hex key for jaw bolts• Eye bolts provided with 12-1/2" and 15-3/4" chucks

3-Jaw Chucks, Camlock Type D1, Direct Mount

ChuckDia D

PartNumber

TaperSize

HoleDia d F G C H h

Camlock Studs RPMmax

WtlbsDiameter Thread Qty M

6-1/4" 3-803-0634 D1-4 1.7717 3.2520 2.5005 0.5118 3.0709 1.7323 5/8 M10x1 3 3000 20

8"3-803-0834 D1-4

2.16543.2520 2.5005

0.5118 3.6220 1.85045/8 M10x1 3

2500 423-803-0836 D1-6 5.2520 4.1880 7/8 M16x1.5 6

10"3-803-1036 D1-6

3.14965.2520 4.1880 0.6299

3.8976 2.14577/8 M16x1.5

6

2000 713-803-1038 D1-8 6.7480 5.5007 0.7087 1 M20x1.5

12-1/2"3-803-1236 D1-6

3.93705.2520 4.1880 0.6299

4.4094 2.30317/8 M16x1.5

1500 1123-803-1238 D1-8 6.7480 5.5007 0.7087 1 M20x1.5

15-3/4"3-803-1638 D1-8

5.35436.7480 5.5007 0.7087

4.8031 2.63781 M20x1.5

1000 2233-803-1639 D1-11 9.2520 7.7507 0.7874 1-3/16 M22x1.5

Type D

Spindle Nose

D1-6 to D1-11 D1-4



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TaperSize Dia No. of

StudsCamlock Studs Metric

Thread Part Number

D1-3 9/16"3 M10 x 1

7-899-103

D1-4 5/8" 7-899-104

D1-5 3/4"

6

M12 x 1 7-899-105

D1-6 7/8" M16 x 1.5 7-899-106

D1-8 1" M20 x 1.5 7-899-108

D1-11 1-3/16" M22 x 1.5 7-899-111

D1-15 1-3/8" M24 x 1.5 7-899-115

BISON Camlock Studs with Inch and Metric Threads and Set Screwsfor Type D1 Direct Mount Chucks

• Sold by piece

NOTE: Always use metricthreaded studswith BISON chucks

Set Screw

Part Number

7-899-305

7-899-310

Camlock Studs English

Thread Part Number

7/16 - 207-899-403

7-899-404

1/2 - 20 7-899-405

5/8 - 18 7-899-406

3/4 - 16 7-899-408

7/8 - 14 7-899-411

– –

BISON 3-Jaw, Type L, Direct Mount Chucks with Two-Piece Jaws• Semi-steel body

ChuckDiaD

PartNumber

TaperSize

HoleDiad

Max HoleEnlargement

RPMmax

ThreadT G J C H h Wt

lbs

6-1/4"7-804-0641 L00

1.6535 1.8110 30003-3/4 - 6 2-3/4 .5512 2.1260 4.0551

1.693 237-804-0642 L0 4-1/2 - 6 3-1/4 .5906 2.5197 4.4488

8"

7-804-0841 L00

2.1654

2.50

2500

3-3/4 - 6 2-3/4 .5512 2.1260 4.3701

1.772 427-804-0842 L02.5591

4-1/2 - 6 3-1/4 .5906 2.5197 4.7638

7-804-0843 L1 6 - 6 4-1/8 .6299 2.9921 5.2362

10"

7-804-1042 L0

2.9921

2.9921

2000

4-1/2 - 6 3-1/4 .5906 2.5197 5.0394

2.087 647-804-1043 L13.4646

6 - 6 4-1/8 .6299 2.9921 5.5118

7-804-1044 L2 7-3/4 - 5 5-1/4 .8661 3.5039 6.0236

12-1/2"

7-804-1242 L0

4.05514.0551

1500

4-1/2 - 6 3-1/4 .5906 2.5197 5.3937

2.244 1347-804-1243 L1 6 - 6 4-1/8 .6299 2.9921 5.8661

7-804-1244 L2 4.3307 7-3/4 - 5 5-1/4 .8661 3.5039 6.3780

15-3/4"7-804-1643 L1

4.0551 4.0551 10006 - 6 4-1/8 .6299 2.9921 6.1811

2.639 2517-804-1644 L2 7-3/4 - 5 5-1/4 .8661 3.5039 6.6929

Type L

Type 3255



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BISON 3-Jaw, Threaded, Direct Mount Chucks• Semi-steel body

Diameter: 4" Only Diameters: 5" thru 12.5"

ChuckDiaD

ThreadT

PartNumber

HoleDiad

RPMmax* G k H h h1 Wt

lbs

4"

1 - 10 7-805-0451

.7874 3500

1.0150

1/2 3.543 –

.669

8.81-1/8 - 12W** 7-805-0455 1.250

1-1/2 - 8 7-805-0452 1.5150

5"1 - 10 7-805-0551

1.2598 32001.0150

1/23.740

1.575–

121-1/2 - 8 7-805-0552 1.5150 3.740

6-1/4"1-1/2 - 8 7-805-0652

1.5748 30001.5150 1/2 4.134

1.693–

232-1/4 - 8 7-805-0653 2.2600 5/8 4.331

8"

1-1/2 - 8 7-805-0852

2.1653 2500

1.5150 1/2 4.528

1.772

–

452-1/4 - 8 7-805-0853 2.2600 5/8 4.724

2-3/8 - 6 7-805-0854 2.3850 3/4 4.922

10" 2-1/4 - 8 7-805-1053 2.9921 2000 2.2600 5/8 5.512 2.087 – 75

12-1/2" 2-3/8 - 6 7-805-1254 4.0551 1500 2.3850 3/4 5.906 2.244 – 121

NOTES: Prior to ordering a threaded mount chuck, please check the spindle nosediameter "G" and dimension "k". Depending on the lathe manufacturer,these dimensions may vary slightly from those specified in the above chart

Metric threads are often confused with traditional threads;please use thread pitch gage to confirm exact pitch prior to ordering

See page 21 for spindle dimensions

** 1-1/8 - 12W is a Whitworth thread

Threaded

Type 3285 / 3284



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S


ChuckDia A = F D D1 D3 D2 E (H7) Dx (k5) S* Sx** C

3-1/4" 2.6378 3.1496 3.1693 0.0252 2.2835 2.2047 2.20470.0787 0.0984 0.1181

4" 3.2677 3.3970 3.95670.3307

2.8346 2.7559 2.7559

5" 4.2520 4.9213 4.9409 3.8189 3.7402 3.7402

0.1181 0.1378 0.15756-1/4" 5.5118 6.2992 6.3189 0.4134 5.0000 4.9213 4.9213

8" 6.9291 7.8740 7.9134 0.5118 6.3780 6.2992 6.2992

10" 8.8189 9.8425 9.8819

0.6693

7.9528 7.8740 7.8740

0.1575 0.1772 0.196912-1/2" 11.2598 12.4016 12.4409 10.3150 10.2362 10.2362

15-3/4" 14.2520 15.7480 15.8268 13.1102 12.9221 12.9221

20" 18.0315 19.6850 19.7638 16.6535 16.5354 16.5354

25" 23.0709 24.8031 24.9213 21.5748 21.4567 21.4567 0.2362 0.2559 0.2756

32" 14.5000 – – – 17.7170 17.7170 – – – 0.7874

BISON Rough Backplates for Scroll Chucks with Threaded Spindles

ChuckDia

PartNumber D d D1 K L Wt

lbs

3" 7-870-105

5.20 .713.46 .98 2.20

4.44" 7-870-105

5" 7-870-105

6-1/4" 7-870-106 6.70.98

12

8" 7-870-108 8.30 4.02 1.18 2.83 22

10" 7-870-110 10.24 1.57 4.53 1.26 3.54 34

12-1/2" 7-870-112 12.30 1.97 6.77 1.26 4.02 66

15-3/4" 7-870-116 16.34 2.76 9.06 2.17 4.92 154

25" 7-870-125 25.20 4.72 11.81 3.35 7.09 496

Principal Mounting Dimensions for Toolmex Backplates

Type 8205

• After selecting a suitable backplatefor the lathe, mount it onto the spindlenose of the lathe

• Proper mounting is very important inorder to secure concentricity betweenthe lathe’s spindle and the chuck

• The back of the lathe chuck has acounterbore diameter, E, finished inH7 class, with depth, C

• Prior to maching the backplate,accurately measure the chuck’scounterbore diameter, E, and depth, C

• A good press fit, H6/k5, is most desirable• To ensure satisfactory concentricity,it is important that this procedure isdone accurately

* S = length of the boss of the supplied backplate** Sx = length of the boss after machining

See full back plate machininginstructions on page 61


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Rough Backplates for Scroll Chucks with Threaded Spindles

BISON Semi-Finished Threaded Backplates for Threaded Spindles

Mounting Instructions:see page 61

ChuckDia

ThreadM

PartNumber A B C D h E Wt

lbs

4"1-10 7-871-041

1.5352.165 1.01500

4.095 .709 .5000 81-1/2-8 7-871-042 2.677 1.51421

5"1-10 7-871-051

1.5352.165 1.01500

5.079 .709 .5000 101-1/2-8 7-871-052 2.677 1.51421

6-1/4"1-1/2-8 7-871-062 1.535

3.1891.51421

6.535 .787.5000

122-1/4-8 7-871-063 1.791 2.26000 .6260

8"1-1/2-8 7-871-082 1.535

3.5831.51421

8.110 .866.5000 12

2-1/4-8 7-871-083 1.791 2.26000 .6260 13

10"2-1/4-8 7-871-103 1.791

4.1732.26000

10.079 .984.6260 22

2-3/8-6 7-871-104 2.047 2.38500 .7480 25

12-1/2"2-3/8-6 7-871-124

2.047 4.3312.38500

12.638 1.102 .7480 332-3/4-8 7-871-125* 2.76000

Type 8206

ChuckDia

ThreadM

PartNumber A B C D h E Wt

lbs

5" 1-1/2"-8 3-871-052 1.535 2.677 1.514 5.079 0.709 0.5 9.9

6-1/4"1-1/2"-8 3-871-062 1.535

3.1891.514

6.535 0.7870.5

11.92-1/4"-8 3-871-063 1.791 2.26 0.626

8" 2-1/4"-8 3-871-083 1.791 3.583 2.26 8.11 0.866 0.626 13



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S


BISON Fully Machined Threaded Backplatesfor Bison Plain Back Self-Centering Chucks

NOTE: Part number series 7-922-backplates require some machining on the counterboreprojection, see page 61 for more information

ChuckDia

ThreadD

PartNumber A C B B1 E Wt

lbs

3-1/4" 3/4 - 16 7-922-035 3.15 – .6299 .6299 .1969 4

4"

1 - 10 7-922-043

3.941.97

1.50 .551

.5000

51-1/8 - 12W 7-922-045 .5630

1-1/2 - 8 7-922-046 2.36 .5000

5"M39 x 4 7-922-051

4.923.00 2.00 .75

.6260 112-3/16 - 10 7-922-053 3.11 1.61 .689

6-1/4" 2-3/16 - 10 7-922-063 6.3 3.11 1.61 .768 .6260 13

Type 8204


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ChuckDia

TaperSize

Fully Machined Backplates*** Semi-Machined Backplates**StudDia

No.of

Studs

HoleDiaC

D GPartNumber

DiaA B B1 Wt

lbsPart

NumberDiaA

FlangeThickness

Wtlbs

4" D1-4 7-878-044 5.97 1.02 .87 3.65 – – – – 5/8

3

2.40 3.25 2.50

5"D1-3 7-878-053

4.94 1.02.57

5.3– – – – 9/16 2.02 2.78 2.13

D1-4 7-878-054 .87 – – – – 5/8 2.40 3.25 2.50

6-1/4"

D1-3 7-878-063

6.32

1.06 .71

9.5

7-878-0630

6.38

1.02

9.3

9/16 2.02 2.78 2.13

D1-4 7-878-064 7-878-06401.14

5/8 2.40 3.25 2.50

D1-5 7-878-065 1.18 1.0 7-878-0650 3/4

6

3.13 4.13 3.25

D1-6 7-878-066 1.44 1.32 – – – – 7/8 4.06 5.25 4.19

D1-8 7-878-068 1.69 1.53 – – – – 1 4.06 6.75 5.50

8"

D1-3 7-878-083

7.89

1.06.71

15.4

–

8.00

–

27

9/163

2.02 2.78 2.13

D1-4 7-878-084 7-878-0840 1.73 5/8 2.40 3.25 2.50

D1-5 7-878-085 1.18 7-878-0850 1.97 3/4

6

3.13 4.13 3.25

D1-6 7-878-086 1.44 1.26 7-878-0860 1.38 7/8 4.06 5.25 4.19

10"

D1-5 7-878-105

9.86

1.18.87

24.3 7-878-1050

9.96 1.93 35

3/4 3.13 4.13 3.25

D1-6 7-878-106 1.44 24.3 7-878-1060 7/8 4.06 5.25 4.19

D1-8 7-878-108 1.54 1.36 39.7 7-878-1080 1 5.35 6.75 5.50

12-1/2"

D1-6 7-878-126

12.42

1.56.94

39.7

7-878-1260

12.52

2.76

49

7/8 4.06 5.25 4.19

D1-8 7-878-128 1.65 7-878-12802.17

1 5.35 6.75 5.50

D1-11 7-878-129 1.85 1.36 7-878-1290 1-3/16 7.59 9.25 7.75

15-3/4"

D1-6 7-878-166

15.77

1.44

1.10 79

7-878-1660

15.94

2.17

93

7/8 4.06 5.25 4.19

D1-8 7-878-168 1.54 7-878-1680 2.76 1 5.35 6.75 5.50

D1-11 7-878-169 1.85 7-878-1690 1.96 1-3/16 7.59 9.25 7.75

20"D1-8 7-878-208

19.701.54

1.14 1327-878-2080

19.881.81

1591 5.35 6.75 5.50

D1-11 7-878-209 1.85 7-878-2090 2.83 1-3/16 7.59 9.25 7.75

25"D1-11 7-878-259 24.82 1.85 1.14 232 7-878-2590 25.00 2.83 232 1-3/16 7.59 9.25 7.75

D1-15 7-878-265 24.82 1.97 1.14 232 – – – – 1-3/8 11.00 13.0 11.25

Type 8240 Type 8242

BISON Semi-Machined and Fully Machined Type D1 Backplates• The number of camlock studs needed varies depending on the spindle size, please refer to the table below• Plain back chucks require backplates which may require machining• Designed for direct mounting on camlock spindle nose

Fully Machined D1 Backplates Semi-Machined D1 Backplates

** See mounting instructions on page 61***The projection on the backplate must be sized to fit each chuck



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Fully Machined Type D1 Backplates

ChuckDia

TaperSize

PartNumber

StudDia

No. ofStuds

Hole DiaC D G A B B1 Wt

lbs

5"D1-4 3-878-054 5/8 3 2.40 3.25 2.50 4.92 1.02 0.87 5.3

D1-6 3-878-056 7/8 6 3.13 5.25 4.19 7.09 1.61 1.43 11.5

6-1/4" D1-4 3-878-064 5/8 3 2.40 3.25 2.50 6.30 1.06 0.71 9.5

8"D1-4 3-878-084 5/8 3 2.40 3.25 2.50

7.871.06 0.71 15.4

D1-6 3-878-086 7/8 6 4.06 5.25 4.19 1.44 1.26 15.4

10"D1-6 3-878-106 7/8

6

4.06 5.25 4.199.84

1.44 0.87 24.3

D1-8 3-878-108 1 5.35 6.75 5.50 1.54 1.36 39.7

12-1/2"D1-6 3-878-126 7/8 4.06 5.25 4.19

12.401.56 0.94

39.7D1-8 3-878-128 1 5.35 6.75 5.50 1.65 0.94


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BISON Semi-Machined and Fully Machined Type A1/A2 Backplates• For plain back chucks• Designed for direct mounting on A1 and A2 spindle nose• May be used for both scroll and independent chucks• See mounting instructions on page 61

Semi-MachinedType 8212

Fully MachinedType 8210

ChuckDia

TaperSize

Fully Machined*** Semi-Machined** A B D E

Part Number ThruHole C

Wtlbs Part Number Thru

Hole CWtlbs

5"A-6 7-873-0560* 3.13 5.3 7-873-056 2.13

6.5 51.02 5.25 4.19

A-8 – – – 7-873-058 3.15 1.81 6.75 5.5

6-1/4" A-5 – – – 7-873-065 3.13 6.5 6.4 1 4.125 3.25

8"A-5 7-873-0850* – 18 7-873-085 3.13 19

7.991.5 4.125 3.25

A-6 – – – 7-873-086 4.06 15.5 1.3 5.25 4.19

10"A-6 – – – 7-873-106 4.06 38

9.961.3 5.25 4.19

A-8 – – – 7-873-108 5.35 33 1.97 6.75 5.5

12-1/2"A-6 – – – 7-873-126 4.06 45

12.521.3 5.25 4.19

A-8 – – – 7-873-128 5.35 62 1.77 6.75 5.5

15-3/4"A-8 – – – 7-873-168 5.35 85

15.941.7 6.75 5.5

A-11 7-873-169H 7.59 51 7-873-169 7.59 141 2.95 9.25 7.75

20"A-11 – – – 7-873-209* 7.59 133

19.88 1.77 9.25 7.75A2-15 7-873-2095 11.08 71 – – –

25"

A-11 – – – 7-873-259* 7.59 158

25

1.77 9.25 7.75

A-15 7-873-2600 11.08 154 7-873-2595 11.08 2182.205

13 11.25

A-20 – – – 7-873-2598* 16 156 18.25 16.25

36" 40" 49"A2-15 – – – 7-873-3615* 11.08 242

21.852.78 13 11.25

A2-20 – – – 7-873-3620* 16 249 3.15 18.25 16.25

* A2 only** Semi Machined backplates should be the first alternative for independent chucks*** Fully Machined backplates supplied with spindle mounting bolts

NOTES: Backplates require some machining on the counterbore projection, see page 61 for more informationThe projection on the backplate must be sized to fit each chuck

Type 8212Type 8210




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Type 8250

Semi-Machined Type A1/A2 Backplates

ChuckDia

TaperSize

PartNumber A B C D E Wt

lbs

6-1/4" A-5 3-873-065 6.4 1 3.13 4.125 3.25 6.5

8"A-5 3-873-085 7.99 1.5 1.50 4.125 3.25 19

A-6 3-873-086 7.99 1.3 1.50 5.252 4.19 15.5

10"A-6 3-873-106 9.96 1.3 3.17 0.207 4.19 38

A-8 3-873-108 9.96 1.97 3.17 6.75 5.50 33

12-1/2"A-6 3-873-126 12.52 1.3 4.06 5.252 4.19 45

A-8 3-873-128 12.52 2.17 4.06 6.75 5.50 62

BISON Fully Machined Type L Backplates• For plain back self-centering chucks• For direct mounting on type L spindle nose• See mounting instructions on page 61

ChuckDia

TaperSize

PartNumber

ThreadDia A B C B1 Wt

lbs

5" L00 7-879-051 3-3/4 - 6 4.92 2.13 2.2 0.71 10

6-1/4"L00 7-879-061 3-3/4 - 6

6.322.13 2.2

0.71 13L0 7-879-062 4-1/2 - 6 2.52 2.6

8"

L00 7-879-081 3-3/4 - 6

7.91

2.13 2.2

0.71 22L0 7-879-082 4-1/2 - 6 2.52 2.6

L1 7-879-083 6 - 6 2.99 3.35

10"

L00 7-879-101 3-3/4 - 6

9.88

2.13 2.20

0.83 33L0 7-879-102 4-1/2 - 6 2.52 2.60

L1 7-879-103 6 - 6 2.99 3.35

L2 7-879-104 7-3/4 - 5 3.50 4.29

12-1/2"

L0 7-879-122 4-1/2 - 6

12.44

2.52 2.60

1.10

39

L1 7-879-123 6 - 6 2.99 3.3557

L2 7-879-124 7-3/4 - 5 3.50 4.29

15-3/4"

L0 7-879-162 4-1/2 - 6

15.83

2.52 2.60

1.10 95L1 7-879-163 6 - 6 2.99 3.35

L2 7-879-164 7-3/4 - 5 3.50 4.29

L3 7-879-165 10-3/8 - 4 4.02 5.43

20"L2 7-879-204 7-3/4 - 5

19.763.50 4.29

1.14 159L3 7-879-205 10-3/8 - 4 4.02 5.43

25"L2 7-879-254 7-3/4 - 5

24.823.78 4.29

1.38 397L3 7-879-255 10-3/8 - 4 4.02 5.43

NOTE: Backplates require somemachining on the counterboreprojection, see page 61 formore information


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ChuckDia

TaperSize

Fully Machined Backplate Semi-Machined BackplateStudDia

No.of

StudsG B

HoleDiad

PartNumber

DiaA K Wt

lbsPart

NumberDiaA

FlangeThickness

L

Wtlbs

5" C-2 7-921-052 4.94 .579 5.3 – – – – - 0 2.480 1.654 1.59

6-1/4"C-4 7-921-064

6.32 .83 9.5– – – – .768 3 3.25 2.50 2.40

C-5 7-921-065 7-921-0650 6.38 1.14 9.3 .768 4 4.125 3.25 3.13

8"

C-4 7-921-084

7.89 .83 15

– – – – .768 3 3.25 2.50 2.40

C-5 7-921-085 7-921-08508.00

1.9727

.768 4 4.125 3.25 3.13

C-6 7-921-086 7-921-0860 1.38 .846 4 5.25 4.19 4.06

10"C-5 7-921-105

9.86 .83 247-921-1050

9.96 1.93 35.768 4 4.125 3.25 3.13

C-6 7-921-106 7-921-1060 .846 4 5.25 4.19 4.06

12-1/2"

C-6 7-921-126

12.42 1.30 40

7-921-1260

12.52

2.76

49

.846 4 5.25 4.19 4.06

C-8 7-921-128 7-921-1280 2.17 1.063 4 6.75 5.50 5.35

C-11 7-921-129 7-921-1290 2.17 1.339 6 9.25 7.75 7.59

15-3/4"C-8 7-921-168

15.77 1.30 807-921-1680

15.942.76

931.063 4 6.75 5.50 5.35

C-11 7-921-169 7-921-1690 1.96 1.339 6 9.25 7.75 7.59

20"C-8 7-921-208

19.70 1.34 132–

––

–1.063 4 6.75 5.50 5.35

C-11 7-921-209 – – 1.339 6 9.25 7.75 7.59

25" C-11 7-921-259 24.82 1.65 231 7-921-2590 25.00 2.83 232 1.339 6 9.25 7.75 7.59

BISON Type C, DIN 55027 Spindle Backplates

TaperSize

PartNumber

StudDiainch

StudDiamm

Threadmm

No.of

Studs

C-4 7-921-904 .7677 19.5 M10 - 39 3

C-5 7-921-905 .7677 19.5 M10 - 43

4C-6 7-921-906 .8465 21.5 M12 - 50

C-8 7-921-908 1.063 27.0 M16 - 60

C-11 7-921-911 1.339 34.0 M20 - 75 6

Type 8232Type 8230

BISON DIN Studs



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BISON Hard Master Jaws for 2, 3 and 4-Jaw Self-Centering Scroll Chucks• American Standard Tongue and Groove Jaws• Sold in sets

ChuckDia

2-Jaw 3-Jaw 4-Jaw

Part Number

5" – 7-885-305 7-885-405

6-1/4" 7-885-206 7-885-306 7-885-406

8" 7-885-208 7-885-308 7-885-408

10" 7-885-210 7-885-310 7-885-410

12-1/2" 7-885-212 7-885-312 7-885-412

15-3/4" 7-885-216 7-885-316 7-885-416

20" – 7-885-320 7-885-420

25" – 7-885-325 7-885-425

32" – 7-885-325 –

ChuckDia K H G F J L D E B OAL

A C S ThreadM

Wt*lbs

5" 5/8 57/64

.4996 5/16

.1575

.4724.3150 .3150 .7874

2.1259 1.102

.126

5/16-18 .31

6-1/4"" 3/4 1-1/8.5511

2.5590 1.1423/8-16

.40

8" 7/8 1-3/8 .3543 .3937 .9843 3.1102 1.299 .68

10" 1-1/16 1-9/16

.7496 1/2

.6299.4331

.47241.1024 3.6220 1.417

1/2-131.06

12-1/2" 1-1/4 1-7/8 .5000 1.2598 4.3307 1.575 1.70

15-3/4"

1-1/2 2-1/4 .2835

.8661 .5906

.5512

1.4173 5.1181 1.929 5/8-11 2.43

20"

1.2598 .6299

1.5748 6.5351 2.126

3/4-10

4.81

25"1.9685

8.26772.146

7.36

32" 8.8583 7.90

5" to 10" Diameters

20" Diameter 25" to 32" Diameters

12-1/2" and 15-3/4" Diameters

* Approximate weight of one jaw

All solid jaws and master jawsare manufactured to Bison’srigid specifications


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Hard Master Jaws

ChuckDia

PartNumber K H G F J L D E B A S Thread

M C Wtlbs

6-1/4" 3-885-306 0.0294 1.12600.4996 0.3126

0.1575

0.6299 0.3543

0.3937

0.7874 2.5591

0.1181

3/8"-160.0511 0.08

8" 3-885-308 0.0344 1.37990.7087

0.3937 0.9843 3.1496 0.0543 0.14

10" 3-885-310 0.0419 1.5669

0.7496 0.5000

0.4724 1.1024 3.74021/2"-13

0.0589 0.22

12-1/2" 3-885-312 0.0492 1.8740 0.82680.5315 0.5118

1.2598 4.4882 0.0666 0.35

15-3/4" 3-885-316 0.0591 2.2500 0.2756 0.9449 1.4173 5.1181 5/8"-11 0.0713 0.50

ChuckDia

3-Jaw 4-Jaw

Part Number

5" 7-883-305 7-883-405

6-1/4" 7-883-306 7-883-406

8" 7-883-308 7-883-408

10" 7-883-310 7-883-410

12-1/2" 7-883-312 7-883-412

15-3/4" 7-883-316 7-883-416

20" 7-883-320 7-883-420

25" 7-883-325 7-883-425

32" 7-883-325 7-883-425

BISON Hard Top Jaws for 3 and 4-Jaw Scroll Chucks• American Standard Tongue and Groove Jaws• Sold in sets• Standard jaws are designed for finishing and medium duty machining• Heavy duty jaws are designed for heavy duty machining

StandardJaws

ChuckDia K H G J K D E F N C B OAL

A O P Wt per Pclbs

5" 5/8 57/64

.4996

.35 .59

.3129

.157

.1260

.315 1.516 .866 2.205 .57 1.38 .37

6-1/4" 3/4 1-1/8.43 .71

.335 1.634 .984 2.638 .71 1.63 .56

8" 7/8 1-3/8 .374 1.713 1.063 3.347 .85 2.01 .79

10" 1-1/16 1-9/16.7496 .55 .78

.5004

.472 2.023 1.280 3.740 .96 2.32 1.32

12-1/2" 1-1/4 1-7/8 .512 2.165 1.457 4.331 1.04 2.68 2.01

15-3/4"

1-1/2 2-1/4 .7496

.71 1.0

.2480

.532 2.5391.654

5.000

1.06 3.01 2.98

20"

.87 1.3

.689 2.933 1.97 3.46 3.42

25".827 3.228

2.0472.01 3.50 5.34

32" 2.047

• American Standard tongue and groove jaws• Sold in 3 piece sets



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Hard Top Jaws for 3 and 4-Jaw Scroll Chucks

ChuckDia

PartNumber M H G J K L D E F N1 N2 C B A O P Q Wt

lbs

6-1/4" 3-883-306 0.7480 1.12600.4996 0.4173 0.6496

0.43310.3126

0.15750.1181

0.3150 0.3543 1.6142 0.9843 2.6378 0.7047 1.6063 0.8268 0.12

8" 3-883-308 0.8740 1.3799 0.5118 0.3543 0.3937 1.7717 1.0630 3.1496 0.8465 2.0079 0.9449 0.16

10" 3-883-310 1.0630 1.5669

0.74960.5394 0.8268

0.5512

0.5000

0.4528 0.4921 2.0276 1.2992 3.8189 0.9724 2.3228 1.0039 0.28

12-1/2" 3-883-312 1.2500 1.8740 0.5906 0.4921 0.5315 2.1654 1.4567 4.3307 1.0354 2.6811 1.1024 0.41

15-3/4" 3-883-316 1.5000 2.2500 0.6890 1.0236 0.7283 0.2362 0.5315 0.5709 2.5394 1.6535 5.0000 0.9567 2.9724 1.2795 0.61

• American Standard tongue and groove jaws• Sold in 3 piece sets

BISON Mounting Bolts for Hard and Soft Top Jaws

L

ChuckDia Thread

Screw No. 1 Screw No. 2

PartNumber L Part

Number L

5" 5/16"-18 7-897-503

3/4

7-897-504 1

6-1/4"3/8"-16 7-897-510 7-897-512 1-1/4

8"

10"1/2"-13 7-897-530 1 7-897-531 1-1/2

12-1/2"

15-3/4" 5/8"-11 7-897-540 1-1/4 7-897-541 1-3/4

20"

3/4"-10 7-897-558 1-1/2

7-897-561 3

25"7-897-562 3-1/4

32"

ChuckDia

SquareSize

Extended Length Standard Length Heavy Duty

PartNumber L Part

Number L PartNumber

3" .2344 7-889-003L 3.15 7-889-003 2.36 7-889-003C

4" .3543 – –7-889-005 3.15 7-889-005C

5" .3543 – –

6-1/4" .43317-889-008L

8.5

7-889-008 3.94 7-889-008C8" .4331

10" .55127-889-012L 7-889-012 4.72 7-889-012C

12-1/2" .5512

15-3/4" .6693 – – 7-889-016

5.51

7-889-016C

20" .7480 – –7-889-025

–

25" .7480 – – –

32" .7480 – – 7-889-032 –

BISON Extended and Standard Length Wrenches


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BISON Enhanced Serration Jaws for Universal and Precision Scroll Chucks• Jaw gripping surfaces serration 1/8"• Sold in sets• Jaws are recommended for heavy machining applications

ChuckDia

Enhanced SerrationJaws

Part Number10" 7-883-310012" 7-883-312016" 7-883-316020" 7-883-3120

25" and 32" 7-883-3250

ChuckDia

3-Jaw 4-JawC L B F E N P O Wt per Pc

lbsPart Number

3" 7-881-303 – 1.1024 1.2598 .4331.2362 .2362

.2362 0.827 .374 .10

4" 7-881-304 – 1.2598 1.6535 .5906 .2756 1.063 .433 .19

5" 7-881-305 7-881-405 1.5748 2.0079.7874 .3150 .3150

.3150 1.313 .512 .40

6-1/4" 7-881-306 7-881-406 2.0866 2.7559 .3937 1.772 .748 .80

8" 7-881-308 7-881-408 2.1260 3.3459 .9843 .3543 .3937 .4724 2.244 .906 1.07

10" 7-881-310 7-881-410 2.4803 4.1339 1.1024 .4331.4724

.5512 2.736 1.102 1.73

12-1/2" 7-881-312 7-881-412 2.9528 4.9213 1.2598 .5000 .7087 3.268 1.358 2.90

15-3/4" 7-881-316 7-881-416 3.6220 5.7087 1.4173 .5906

.5512

.8661 3.898 1.417 5.20

20" 7-881-320 7-881-420 3.9370 7.0866 1.5748.6299

1.0236 4.705 1.969 7.33

25" 7-881-325 7-881-425 4.3307 8.8583 1.9685 1.1024 5.866 2.598 13.00

BISON ID Hard Solid Jaws for 3 and 4-Jaw Scroll Chucks• Sold in sets

ChuckDia Part Number L B H h

6-1/4" 3-881-306 2.756 0.787 2.126

0.47248" 3-881-308 3.347 0.984 2.402

10" 3-881-310 4.134 1.102 2.717

12-1/2" 3-881-312 4.921 1.260 2.9530.7087

15-3/4" 3-881-316 5.709 1.417 3.622

ID Hard Solid Jaws for 3-Jaw Scroll Chuck• Sold in 3 piece sets



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ChuckDia

3-Jaw 4-JawC L B F E N P O Wt per Pc

lbsPart Number

3" 7-880-303 – 1.1024 1.2598 .4331.2362 .2362

.2362 0.827 .374 .10

4" 7-880-304 – 1.2598 1.6535 .5906 .2756 1.063 .433 .19

5" 7-880-305 7-880-405 1.5748 2.0079.7874 .3150 .3150

.3150 1.313 .512 .40

6-1/4" 7-880-306 7-880-406 2.0866 2.7559 .3937 1.772 .748 .80

8" 7-880-308 7-880-408 2.1260 3.3459 .9843 .3543 .3937 .4724 2.244 .906 1.07

10" 7-880-310 7-880-410 2.4803 4.1339 1.1024 .4331.4724

.5512 2.736 1.102 1.73

12-1/2" 7-880-312 7-880-412 2.9528 4.9213 1.2598 .5000 .7087 3.268 1.358 2.90

15-3/4" 7-880-316 7-880-416 3.6220 5.7087 1.4173 .5906

.5512

.8661 3.898 1.417 5.20

20" 7-880-320 7-880-420 3.9370 7.0866 1.5748.6299

1.0236 4.705 1.969 7.33

25" 7-880-325 7-880-425 4.3307 8.8583 1.9685 1.1024 5.866 2.598 13.00

BISON OD Hard Solid Jaws for 3 and 4-Jaw Scroll Chucks• Sold in sets

OD Hard Solid Jaws for 3-Jaw Scroll Chuck• Sold in 3 piece sets

ChuckDia Part Number L B H h

6-1/4" 3-880-306 2.756 0.787 2.126

0.47248" 3-880-308 3.347 0.984 2.402

10" 3-880-310 4.134 1.102 2.717

12-1/2" 3-880-312 4.921 1.260 2.9530.7087

15-3/4" 3-880-316 5.709 1.417 3.622


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ChuckDia

3-Jaw 4-JawC L B F E Wt per Pc

lbsPart Number

3" 7-882-303 – 1.1024 1.2598 .4331.2362 .2362

.13

4" 7-882-304 – 1.2598 1.6535 .5906 .29

5" 7-882-305 – 1.5748 2.0079.7874 .3150 .3150

.57

6-1/4" 7-882-306 7-882-406 2.0866 2.7559 1.10

8" 7-882-308 7-882-408 2.1260 3.3459 .9843 .3543 .3937 1.77

10" 7-882-310 7-882-410 2.4803 4.1339 1.1024 .4331.4724

3.00

12-1/2" 7-882-312 7-882-412 2.9528 4.9213 1.2598 .5000 4.20

15-3/4" 7-882-316 7-882-416 3.6220 5.7087 1.4173 .5906

.5512

5.33

20" 7-882-320 – 3.9370 7.0866 1.5748.6299

11.00

25" 7-882-325 – 4.3307 8.8583 1.9685 19.00

BISON Soft Solid Jaws for 3 and 4-Jaw Scroll Chucks• Sold in sets

ChuckDia

2-Jaw 3 and 4-JawA

3 and4-Jaw

B

2-JawB C D E F G H I J

Bolt SizeM

3-Jaw

Wtper PclbsPart Number

5" – 7-884-305 2.520 0.866 – 1.520

.3129

0.5910 1-1/4

.500

1.000

.1260.283

5/16-18 .66

6-1/4" 7-884-206 7-884-306 3.071 1.0001.575

1.634 0.8386 1-1/2 1.3393/8-16

1.01

8" 7-884-208 7-884-308 3.543 1.063 1.713 0.9488 1-3/4 1.575 1.43

10" 7-884-210 7-884-310 4.173 1.280 1.850 2.028

.5000

1.0827 2-1/8

.750

1.7721/2-13

2.54

12-1/2" 7-884-212 7-884-312 4.724 1.4572.047

2.165 1.2087 2-1/2 2.087

.2480

3.53

15-3/4" – 7-884-316 5.512 1.654 2.539

1.3543 3 2.480 .406

5/8-11 4.85

20" – 7-884-320 5.512 1.654 – 2.933

3/4-10

5.29

25" – 7-884-325 6.299 2.047 –3.288 9.26

32" – 7-884-325 6.299 2.047 –

Jaw mounting bolts canbe found on page 88

BISON Soft Top Jaws for 2, 3, and 4-Jaw Chucks• Sold by piece• American Standard Tongue and Groove Jaws



ERSA

LSP

ARE

PARTS


BISON Spare Parts for 2, 3, and 4-Jaw Chucks with Semi-Steel Body

Pinion Screw

PartNumber

7-888-904

7-888-904

7-888-906

7-888-906

7-888-910

7-888-910

7-888-910

7-888-920

7-888-920

7-888-920

7-888-920

Pinion**

PartNumber OD OAL Wt

lbs

7-886-303 .75 1.02 .04

7-886-304 .98 1.40 .12

7-886-305 .98 1.63 .14

7-886-306 1.1 1.87 .20

7-886-308 1.2 2.30 .42

7-886-310 1.4 2.72 .51

7-886-312 1.5 3.60 .77

7-886-316 1.7 4.41 1.48

7-886-320 2.0 5.30 2.09

7-886-325 2.0 5.87 2.51

7-886-332 2.0 8.07 4.41

ChuckDia

Scroll**

PartNumber OD H Wt

lbs

3" 7-887-303 2.16 .41 .16

4" 7-887-304 2.74 .49 .34

5" 7-887-305 3.70 .53 .66

6-1/4" 7-887-306 4.88 .71 1.85

8" 7-887-308 6.26 .79 2.65

10" 7-887-310 7.84 .87 4.28

12-1/2" 7-887-312 10.1 .98 9.50

15-3/4" 7-887-316 12.9 1.10 18.8

20" 7-887-320 16.4 1.18 36

25" 7-887-325 21.3 1.57 66

32" 7-887-332 27.4 1.77 148

** For semi-steel chucks onlyEye Bolts

ChuckDia L D

15-3/4" and 20" .9843 1.1811

25" and 28" 1.2205 1.3386

32", 36" and 40" 1.4961 1.5748

49" 1.7717 1.9685

Spare Parts for 3-Jaw Scroll Chucks with Semi-Steel Body

ChuckDia

Scroll

PartNumber OD

6-1/4" 3-887-306 4.8031

8" 3-887-308 6.1811

10" 3-887-310 7.7559

12-1/2" 3-887-312 10.1181

15-3/4" 3-887-316 12.6772

Wrench

PartNumber

SquareSize

3-889-306 0.3937

3-889-308 0.4724

3-889-310 0.4724

3-889-312 0.5118

3-889-316 0.5512

Pinion Screw

PartNumber OD L

3-888-306 0.1850 1.3780

3-888-308 0.2441 1.7126

3-888-310 0.2441 1.7126

3-888-312 0.3228 1.9685

3-888-316 0.3228 1.9685

Pinion

PartNumber OD L

3-886-306 1.1429 2.0669

3-886-308 1.2245 2.4134

3-886-310 1.3061 2.9134

3-886-312 1.4286 3.8583

3-886-316 1.5510 4.4882

• Sold by the pieceOD = outside diameterL = overall length


toolmex workholding catalog - 2010 - lathe · pdf fileorder from logan actuator co. - (815)...

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