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<strong>Timken</strong> ® SAF SPLIT-BLOCK HOUSED UNITS<br />
Spherical Roller Bearings • 230 SERIES (230K SERIES SAF, SDAF)<br />
B<br />
R<br />
B<br />
B<br />
R<br />
R<br />
B<br />
R<br />
B<br />
R<br />
B<br />
BR<br />
R<br />
B<br />
B<br />
R<br />
R<br />
B<br />
R<br />
R<br />
R<br />
R<br />
R<br />
R<br />
R<br />
R<br />
R<br />
R<br />
D d<br />
d a<br />
D a<br />
D d D d<br />
dD a<br />
Dd<br />
a<br />
d a<br />
D a<br />
d a<br />
D a<br />
D d<br />
dD a<br />
dD a<br />
D d<br />
d a<br />
D a<br />
d a<br />
D a<br />
D d D d<br />
D d<br />
d a<br />
D a<br />
d a<br />
D a<br />
EJ<br />
EJEM/YM<br />
EJ<br />
EJ<br />
EM/YM<br />
EM/YM<br />
EMB/YMB<br />
EM/YMEMB/YMB<br />
EMB/YMB YMD<br />
EMB/YMB<br />
Continued from previous page.<br />
Bearing<br />
Part<br />
No.<br />
23060<br />
23064<br />
23068<br />
23072<br />
23076<br />
23080<br />
23084<br />
23088<br />
23092<br />
23096<br />
230/500<br />
230/530<br />
Mounting Data<br />
Bearing Dimensions Load Ratings<br />
Cage<br />
Type Fillet (1) Backing Dia.<br />
(Max.)<br />
Bore O.D. Width Dynamic Static Shaft Housing<br />
Equivalent Radial Load<br />
Factors (2)<br />
Dynamic<br />
F a __ ≤ e<br />
Fr<br />
F a __ > e<br />
Fr<br />
X = 1 X = 0.67<br />
Static<br />
In<br />
All<br />
Cases<br />
d D B C Co R d a D a e Y Y Y 0 C g<br />
mm<br />
in.<br />
mm<br />
in.<br />
mm<br />
in.<br />
kN<br />
lbf.<br />
kN<br />
lbf.<br />
mm<br />
in.<br />
mm<br />
in.<br />
mm<br />
in.<br />
Geometry<br />
Factor (3)<br />
Thermal<br />
Speed<br />
Ratings (4)<br />
300 460 118 2120 3540<br />
3 336 425<br />
71.0<br />
YMB<br />
0.24 2.87 4.27 2.8 0.093 980 830<br />
11.811 18.11 4.646 477000 796000 0.12 13.2 16.8 156.2<br />
320 480 121 2200 3850<br />
3 357 444<br />
77.4<br />
YMB<br />
0.23 2.93 4.36 2.86 0.096 910 780<br />
12.598 18.898 4.764 494000 867000 0.12 14.1 17.5 170.3<br />
340 520 133 2640 4620<br />
4 384 481<br />
102.7<br />
YMB<br />
0.23 2.96 4.4 2.89 0.101 830 710<br />
13.386 20.472 5.236 593000 1040000 0.16 15.1 18.9 225.9<br />
360 540 134 2590 4600<br />
4 403 499<br />
108.3<br />
YMB<br />
0.23 2.94 4.38 2.88 0.102 800 680<br />
14.173 21.26 5.276 583000 1030000 0.16 15.9 19.7 238.3<br />
380 560 135 2800 5090<br />
4 422 520<br />
114.2<br />
YMB<br />
0.22 3.08 4.58 3.01 0.105 740 630<br />
14.961 22.047 5.315 630000 1140000 0.16 16.6 20.5 251.2<br />
400 600 148 3310 5950<br />
4 447 555<br />
148.7<br />
YMB<br />
0.23 2.98 4.44 2.92 0.111 690 590<br />
15.748 23.622 5.827 744000 1340000 0.16 17.6 21.9 327.1<br />
420 620 150 3450 6360<br />
4 467 576<br />
156.0<br />
YMB<br />
0.22 3.05 4.54 2.98 0.114 650 560<br />
16.535 24.409 5.906 774000 1430000 0.16 18.4 22.7 343.2<br />
440 650 157 3750 6970<br />
5 489 603<br />
180.0<br />
YMB<br />
0.22 3.04 4.53 2.97 0.117 610 520<br />
17.323 25.591 6.181 844000 1570000 0.2 19.3 23.7 396.0<br />
460 680 163 4060 7570<br />
5 512 631<br />
205.0<br />
YMB<br />
0.22 3.06 4.56 2.99 0.118 580 500<br />
18.11 26.772 6.417 913000 1700000 0.2 20.1 24.9 451.0<br />
480 700 165 4170 7980<br />
5 532 651<br />
215.0<br />
YMB<br />
0.22 3.14 4.67 3.07 0.124 550 470<br />
18.898 27.559 6.496 938000 1790000 0.2 21 25.6 473.0<br />
500 720 167 4290 8160<br />
5 550 673<br />
222.0<br />
YMB<br />
0.21 3.26 4.85 3.18 0.126 530 460<br />
19.685 28.347 6.575 965000 1840000 0.2 21.7 26.5 488.4<br />
530 780 185 5150 9720<br />
5 588 725<br />
302.6<br />
YMB<br />
0.21 3.14 4.68 3.07 0.132 480 420<br />
20.866 30.709 7.284 1160000 2190000 0.2 23.2 28.6 665.7<br />
Oil<br />
RPM<br />
Grease<br />
RPM<br />
Wt.<br />
kg<br />
lbs.<br />
(1)<br />
Maximum shaft or housing fillet radius that bearing corners will clear.<br />
(2)<br />
These factors apply for both inch and metric calculations. See engineering section for instructions on use.<br />
(3)<br />
Geometry constant for Lubrication Life Factor a 31 is found in the Bearing Ratings section of the Engineering Manual (order no. 10424).<br />
(4)<br />
See thermal speed ratings in the Engineering Manual (order no. 10424).<br />
Note: Where EJ and EM/EMB have different load ratings, the more conservative one was taken to use for both assemblies.<br />
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.<br />
TIMKEN ® HOUSED UNIT CATALOG D-41
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