Pedestal Mounted Thrust & Journal Bearings in ... · PDF fileAn oiling ring option is avail...
Transcript of Pedestal Mounted Thrust & Journal Bearings in ... · PDF fileAn oiling ring option is avail...
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