Pedestal Mounted Thrust & Journal Bearings for the

Hydro Electric Industry

INTRODUCTION

Kingsbury Inc. has been attentive to the needs of the hydro power industry for over 70 years. From the first bearing introduced in 19'12 to the pres­ent, Kingsbury has kept pace with the design demands of the market place. In preserving this tradition, Kingsbury has developed a standard line of thrust and journal bearings complete with pedestal mounted housings. These units have

been specifically designed for horizontal turbine

generator applications. The long-life. low main­tenence characteristics of the Kingsbury bearing makes it an excellent choice for usc at remote hydro-generating sites.

As with all Kingsbury products. an experienced engineering staff stands ready to assist you in ful­filling your specific bearing requirements.

GENERAL DESCRIPTION

The Kingsbury hydro bearing package is pre­

designed for ease of selection and application. The bearings are encased in rugged. fabricated housings. Standardized housing designs permit quick reference to crilical weights and dimen­sions required for power house lny-oul. The load­ed thrust bearing is self- equalizing to insure even

dislribulion of lhe principle hydraulic thrust load over the bearing shoes. Momentary reverse lhrust loads arc accommodated by a non-equalizing bumper bearing. Self-aligning journal bearings are used to protect against conditions of shaft mis­alignment. ASTM standard D23GR2 babbitt is lIsed on all lhrust shoes and journal shells. These

components arc manufactured to meet Kings­bury's ultrasonic and edge-bond specifications. Oil leakage from the thrust bearing area is con­trolled by bronze seal rings fitted closely to the shaft. Oil throwers and labvrinth end seals virtual­ly eliminate oj( leaking from the housing cavity. Filler plates and shims arc provided for setting thrust bearing clearance. The housings. iJS well as all internal components. excluding the collar. are split at lhe horizontal center line for ease of as­sembly and access. An oiling ring option is avail­able for journal bearings which further insures the safety of the generator and shaft.

BEARING SELECTION

Preliminary bearing selection is determined by thrust load and shaft size. Shaft diameters range from 6 inches to 22.5 inches. Nine separate items encompassing the various shaft sizes are found in the tabulation. Maximum and minimum thrust loads and maximum and minimum journal loads are calculated for each item. Any shaft size be­tween those indicated and proportionate thrust and journal loads in between the shaft sizes can be accommodated by the speCified itcm.

IMPORTANT: calculated loads arc based on 300

SSU oil at 120 degrees fahrenheit inlet Ipmpcra­ture and are only valid for speeds above 100 RPtvl. Bearing selection is identical for bOlh the thrust and journal bearing combination and the com­panion journal bearing.

Preliminary bearing selection and required bolt dimensions can be confirmed by contacting our Engineering Department.

LUBRICATION

The Kingsbury hydro bearing package requires a pressurized lubrication system. Associated power losses are found in the curves provided. Kings­bury recommends a lubricant supply of 1 GPM

per horsepower loss. When oiling rings arc re­quired recommended oil levels will be provided by our Engineers. A self contained lubriciJlion system is also available upon request.

,

200

1U0

" ,

"

'"

30

00

9

,

,

,

5

2.5

,

1.5

Thrust & Journal Bearing H.P. Losses

item Shan item Shafl No. Dia. Nom. Nn. I)ia. Nom.

1 ,\ 0.00 6 " 11.50 B 7.50 II \6.00

2 A 7.0U

7 " 13.50

II 10.00 II \8.50

3 " 8.00

8 " \ 5.50

B 11.50 II 21.00

, " tWO 9 ,\ HI.50

B 12.no " 22.50

, A 10.0t) II nuo

J f I

77 7 7 7

II I 'I II II, r/ II

/, VI, VI r; V

;{ � f� V � I

� � V � II � I V

, II 'I I I I II I II I II

" '111 VI I 'I , 1/ II/I V/ fl 1/ YIII/ 1// r/I IJI

777 I 77 r77 '1111 I r/I rl f1 III flP rl �'l 0} � � � � ,

TV

�� II

IIII VII

IIII

/.

�'/ IIII III1 II

II

U 1110 2 3 oJ 5 (; 7 II 1000

SHA"�r REVOLUTIONS PER MINUTE

C/O C/O

S

'"

'''''

90

80

"

"

"

00

, ,

6

5

,

>'5

Journal Bearing H.P. Losses

Item Shaft Item No. Di ... Nom No.

1 ,\ 6.00 , A B 7.5U II

2 A 7.00 7

A " 1000 B

3 A 8.0U 8 A II 11.50 II

, " g.OO 9 ,\ II 1 200 II

, A IO.On " LUlU

/; I I

I II I I I II II I

I I I I I1II V �

� 1/ / 1/ '/ / VI II V I/; iff;

�' W�� �-0 '\!" ",' '\!" '"

'l;> � .� '" .,

, " ,

Shaft lJia. Num

1 1.5U lfi.DO

t:J.:iO lli.SO

\5.50 21.00

18.50 22.50

II 1/ I V II

I V V I � II V

/ V II I

tI; II II V V V V � V II II V }1

I I II I II /

I fl I V I /, 'I III f1 II; V! I� II II

111 [I V /1 II II II

V II II V �, W II

,\

" 000 '00 300 -IUO 500 60U 7110 900

S1I1\ FT REVOLUTIONS PER l\HNUTE

Based on 300 SSU (n IOO'F. 120"F Inlet Temp.

,

I

Thrust & Journal Bearing with Housing Assembly

: , , , , / ,

--/ , - -

, ,

F DlA. BASE

COLLAR BORE & KEYWA Y DETAIL •

10UR;-\AL I OlL li\'LET N.P.T.

OIL OUTLET KP.T.

/ JOURNAL OIL DRAIi\' N.P.T.

I

, ,

L-c OIL Rl:-:GS

I I

THRUST BRG. OIL OUTLET :-:.PT.

(OPTION AL) k---�--�- A----�' ----B---A

SECTION A-A

lt�m No.

J

2

3

,

5

6

7

•

9

Shft Thru.C m • . Nom, Load IIb_)

6.00 36.000 7.50 28,000

7.00 48,000 10.00 28,000

8.00 65.000 11.50 36.000

9.00 102.000 12.00 80.000

10.00 121.000 13,00 84,000

11.50 145.000 16.00 109.000

13.50 192.000 18.50 145.000

15.50 245.000 21.00 200.000

18.50 350.000 22.50 300.000

0:-: EQUAL

Rll'\G SIDE

)ourn�l I Load lib,) I

11.000 15.000

15.000 25,000

16.000 34.000

27.000 36.000

29.000 42.000

37.000 64.000

49.000 85.000

64.000 94.000

66,000 106,000

XP.T. FOR THER�IO r-... THR. BRG.

OIL INLETTSp.

l'\.P.T. DRAIX

,

36.38

39.25

44.62

46.88

46.50

53.25

62.50

65.25

10.00

1I0 .. �in� [Iim ' �

I , c

22.00 11,00

25.50 11.75

29.00 13.B8

33.75 15.811

37.00 17.25

40.00 19.25

49.75 23.38

54.25 26.38

62.25 30.38

•

Thr .... Collar " Ema. I fm •. I G

8.12 1 13.69 1 5.38 12.25 13.69

8.RB 15.19 15.19

10.88 18.25

12.118

'14.00

15.75

16.12

21.12

24.62

,/

18.25

22.00 22.00

24.25 22.75

26.75 26.75

30.75 30.15

34.75

34.75

41.25 41.25

, ,

/

6.75 2.25

9.00 ' '0 _ . , 6.00 ' ' 0 .. , 6.63 2.88

10.50 3.00

8.50 3.62 8.50 3.62

8,88 3.88 12.25 3.25

10.00 4.25 I·U5 4.00

12.50 5.25 11.00 5.12

13.50 5.15 19.00 6.00

16.50 7.00 20.50 7.00

�-- --B----�,

----------� L. A

HALF SECTION C-C HALF END VIEW EQUALIZING BEARING MAYBE LOCATED ON EITHER SIIJE Of COLLAR

HALF SECTION B-B HALF END VIEW

List of Material Eo.c. \\'1.

\·CoII.r_ Name

1.650

2.215

3.435

4,880

5.765 1 7.990

13.835

16.020

25.790

, -

N.Il.T. OIL

DRAIN

,

N.P.T .

OIL DRAIN

VIEW DO

B--.

(2) HOLES D lAG. OPPOSITE

D[A. REAM THRU FOR

LOCATING DOWELS -, (DOWELS BY CUSTOMER)

-D

D

c

-,

'-"--'--''-'--'--'>...-���.:".::,.�-- .-"

OIL ruNGS (OPTIONAL)

-�--------�A ------�-

B

SECTION AA

I -�--I ,

\

c N.!'.T.

OIL INLET

N.P.T. OiL

DRAIN

- .

. ...

B ==:=t--.--- ----

___ 1_. _ _ _

(ljHOLE UNC·2B TAP DEEP

VIEWCC

/ ' //

// / ,

,/ /

--�,-

' " "" Ii I \ !

c

'" "II-'..r , , I , , ' " '" '" , , , , ,

HALF SECTION B-B HALF END VIEW

,

J

MOUNTING HOLES ('I) EACH SIDE DIA. SPOTFACE OIA. THRU FOR BOLTING (HARDWARE BY CUSTOMER)

HOLES EACH SlOE

TAPTHRU [FOR JACKING)

Item No.

I

2

3

4

5

"

7

8

9

Shaft Ilia. Nom.

6.00 7.50

7.00 10.00

6.00 11.50

9.00

12.00

10.00

13. 00

1 1.50 16.00

13.50 18.50

15.50 21.00

18.50 22.50

Journal Bearing with Housing

Assembly

Journal Housing !lim's J::st. Wt. Lo�d (los) A 8 C 0 ''''.

] ] .000 15.000

21.50 33.50 11.00 9.00 1.253

15.000

25.000 23.50 36.00 11.75 10.00

1,602

16.000

34,000 32.00 37.50 13.88 12,00 2.700

27.000

36.000 32.00 38.00 15.88 13,50 3. 1 05

29.000 42,000

33.00 39.00 17.25 15,00 3.608

37.000

64.000 38.00 42 . 00 19.25 17.00 5.030

49.000 85.000 40.50 46.50 23.38 IB.OO 6.774

64.000 94.000 41.00 49.00 26.38 20.00 8.100

66.000 106.000 41.00 50.50 30.38 26.00 10.149

List of Material

No. Name � . . .,. No.

4 Jacking Screws " I Pipe Plug 18

I Air Vent Cap 17

I Air Vent Nipp le I" End Closure Screw 15

4 End Closure Joint Screw 14

2 End Closure [In lialve.) 13

4 Oil Thrower Joint Screw 12

2 Oil Thrower (In Halvesl II I Brg. Shell Dowel 10

2 Drg. Shell Joint Dowel 9

4 Brg, Shell Joint Screw 8

I Journal Brg. Shell (In !lal\''''') 7 Housing Joint Nut " Housing ,Oint Bolt 5

Housing Taper Dowel Nut 4

Housing Taper Dowel Bolt 3

I Housing-Upper Half 2 1 HOUSing-Lower Half I

Kingsbury Products and Catalogs

Horizontal Equalizing

Thrust Bearings Catalog EQH

Vertical Equalizing Thrust Bearings Catalog EQ

Pivoted Shoe Journal Bearings Catalog PJ

Self-Contained Horizontal

Bearing Systems Catalog CP

Non-Equalizing Tilling Pad

Thrust Bearings Catalog NE

Thrust Measurement Systems Catalog TMS

IIigh Efficiency Thrust Bearings Catalog KS LEG

Bearing Repair and Service Catalog SR