Timken Super Precision Bearings for Machine Tool Applications

Appendix
3MM9300WI Series
FTF: Fundamental Train Frequency: the frequency at which the
cage will operate.
BPFO: Ball Pass Frequency Outer: the frequency at which a single
defect in the outer race will be detected.
BSF:
Ball Spin Frequency: the frequency at which a single defect
on a rolling element will be detected.
BPFI: Ball Pass Frequency Inner: the frequency at which a single
defect in the inner race will be detected.
Bearing Number FTF-Inner (1) BSF BPFO BPFI FTF-Outer (2)
3MM9300WI 0.4100 2.4380 4.9204 7.0796 0.5900
3MM9302WI 0.4248 2.9417 5.5225 7.4775 0.5752
3MM9303WI 0.4312 3.2273 6.4681 8.5319 0.5688
3MM9305WI 0.4356 3.4586 7.4044 9.5956 0.5644
3MM9306WI 0.4439 3.9913 8.4346 10.5654 0.5561
3MM9307WI 0.4440 3.9990 8.4366 10.5634 0.5560
3MM9308WI 0.4437 3.9648 8.4295 10.5705 0.5563
3MM9309WI 0.4491 4.4029 9.4320 11.5680 0.5509
3MM9310WI 0.4529 4.7606 10.4166 12.5834 0.5471
3MM9311WI 0.4521 4.6811 10.3983 12.6017 0.5479
3MM9312WI 0.4554 5.0340 11.3851 13.6149 0.5446
3MM9313WI 0.4583 5.3867 12.3736 14.6264 0.5417
3MM9314WI 0.4535 4.8255 10.8839 13.1161 0.5465
3MM9315WI 0.4561 5.1141 11.4020 13.5980 0.5439
3MM9316WI 0.4584 5.4026 12.3766 14.6234 0.5416
3MM9317WI 0.4579 5.3423 11.9047 14.0953 0.5421
3MM9318WI 0.4565 5.1696 11.8699 14.1301 0.5435
3MM9319WI 0.4585 5.4136 12.8371 15.1629 0.5415
3MM9320WI 0.4611 5.7794 13.3708 15.6292 0.5389
3MM9322WI 0.4641 6.2666 14.3858 16.6142 0.5359
3MM9324WI 0.4622 5.9485 13.8645 16.1355 0.5378
3MM9326WI 0.4606 5.7077 13.8171 16.1829 0.5394
3MM9328WI 0.4630 6.0804 14.8147 17.1853 0.5370
3MM9330WI 0.4561 5.1141 12.3141 14.6859 0.5439
3MM9334WI 0.4586 5.4401 13.3007 15.6993 0.5414
3MM9340WI 0.4551 4.9987 12.2879 14.7121 0.5449
AD
(1) For inner ring rotation.
(2) For outer ring rotation.
A
TIMKEN MACHINE TOOL CATALOG 223