Timken - Saf Split-Block Housed Units

Timken ® SAF SPLIT-BLOCK HOUSED UNITS
Spherical Roller Bearings • 232 SERIES (232, 232K SERIES SDAF)
232 Series B
R
(232, 232K Series SDAF)
• Bearings are available with a tapered bore for adapter-type
mounting. To order, add
R
the suffix K to bearing number
R R
(e.g., 23120K). D d d a
D a
D d D d
• Consult your Timken engineer and www.timken.com for
up-to-date information about the availability of the bearings
you have selected.
B
B
R
R
R
dD a
Dd
a
d a
D a
B
R
d a
D a
D d
R
B
R
dD a
dD a
R
B
D d
BR
R
d a
D a
R
d a
D a
EJ
EJEM/YM
EJ
EJ
EM/YM
EM/YM
EMB/YMB
EM/YMEMB/YMB
Bearing
Part
No.
23248
23252
23256
23260
23264
23268
23272
23276
23280
23284
23288
Equivalent Radial Load
Factors (2)
Dynamic Static
Mounting Data
Bearing Dimensions Load Ratings
Cage
F
Type Fillet (1) Backing Dia.
__ a F ≤ e __ a > e In
Fr Fr All
(Max.)
Bore O.D. Width Dynamic Static Shaft Housing X = 1 X = 0.67 Cases
d D B C Co R d a D a e Y Y Y 0 C g
mm
in.
mm
in.
mm
in.
kN
lbf.
kN
lbf.
mm
in.
mm
in.
mm
in.
Geometry
Factor (3)
Thermal
Speed
Ratings (4)
240 440 160 2780 4150
3 281 394
YMB
0.35 1.92 2.86 1.88 0.082 760 680
9.449 17.323 6.299 625000 932000 0.12 11.1 15.5 237.8
260 480 174 3210 4830
4 308 430
140.1
YMB
0.34 1.98 2.95 1.94 0.087 680 610
10.236 18.898 6.85 721000 1090000 0.16 12.1 16.9 308.2
280 500 176 3360 5240
4 329 450
149.7
YMB
0.33 2.07 3.08 2.02 0.092 620 560
11.024 19.685 6.929 756000 1180000 0.16 13 17.7 329.3
300 540 192 3840 6150
4 353 482
194.5
YMB
0.34 2.00 2.98 1.96 0.095 560 510
11.811 21.26 7.559 864000 1380000 0.16 13.9 19 427.9
320 580 208 4350 7060
4 379 516
245.1
YMB
0.34 1.98 2.94 1.93 0.101 510 460
12.598 22.835 8.189 978000 1590000 0.16 14.9 20.3 539.2
340 620 224 5160 8200
5 399 554
301.5
YMB
0.35 1.91 2.84 1.86 0.103 460 420
13.386 24.409 8.819 1160000 1840000 0.2 15.7 21.8 663.3
360 650 232 5530 8790
5 420 583
338.6
YMB
0.35 1.95 2.91 1.91 0.109 430 400
14.173 25.591 9.134 1240000 1980000 0.2 16.5 22.9 744.9
380 680 240 5970 9520
5 442 611
379.4
YMB
0.34 1.98 2.95 1.94 0.11 410 370
14.961 26.772 9.449 1340000 2140000 0.2 17.4 24.1 834.7
400 720 256 6720 10800
5 466 646
457.5
YMB
0.34 1.96 2.93 1.92 0.116 370 340
15.748 28.347 10.079 1510000 2430000 0.2 18.4 25.4 1006.5
420 760 272 7360 11800
6 490 681
525.0
YMB
0.35 1.90 2.83 1.86 0.119 350 320
16.535 29.921 10.709 1650000 2660000 0.24 19.3 26.8 1155.0
440 790 280 8090 13200
6 512 710
602.0
YMB
0.35 1.95 2.91 1.91 0.123 320 300
17.323 31.102 11.024 1820000 2970000 0.24 20.1 28 1324.4
Oil
RPM
Grease
RPM
Wt.
kg
lbs.
108.1
(1)
Maximum shaft or housing fillet radius that bearing corners will clear.
(2)
These factors apply for both inch and metric calculations. See engineering section for instructions on use.
(3)
Geometry constant for Lubrication Life Factor a 31 is found in the Bearing Ratings section of the Engineering Manual (order no. 10424).
(4)
See thermal speed ratings in the Engineering Manual (order no. 10424).
NOTE: Tolerance and shaft diameters are shown in the tables D-2 and D-3 on pages D-5 and D-6 as variances from nominal bearing bore.
TIMKEN ® HOUSED UNIT CATALOG D-43