Timken Super Precision Bearings for Machine Tool Applications

SUPER PRECISION
FREQUENCY COEFFICIENTS
BALL BEARINGS
2MM9300WI 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)
2MM9300WI 0.4054 2.4294 4.8649 7.1351 0.5946
2MM9301WI 0.4159 2.7546 5.4070 7.5930 0.5841
2MM9302WI 0.4204 2.9335 5.4650 7.5350 0.5796
2MM9303WI 0.4272 3.2198 6.4074 8.5926 0.5728
2MM9304WI 0.4194 2.9144 5.8719 8.1281 0.5806
D
A
2MM9305WI 0.4314 3.4509 7.3346 9.6654 0.5686
2MM9306WI 0.4404 3.9846 8.3667 10.6333 0.5596
2MM9307WI 0.4405 3.9924 8.3695 10.6305 0.5595
2MM9308WI 0.4399 3.9578 8.3586 10.6414 0.5601
2MM9309WI 0.4458 4.3966 9.3612 11.6388 0.5542
2MM9310WI 0.4498 4.7547 10.3448 12.6552 0.5502
2MM9311WI 0.4490 4.6752 10.3262 12.6738 0.5510
2MM9312WI 0.4525 5.0286 11.3121 13.6879 0.5475
2MM9313WI 0.4556 5.3816 12.2999 14.7001 0.5444
2MM9314WI 0.4504 4.8196 10.8092 13.1908 0.5496
2MM9315WI 0.4531 5.1086 11.3285 13.6715 0.5469
2MM9316WI 0.4556 5.3974 12.3014 14.6986 0.5444
2MM9317WI 0.4557 5.3371 11.8322 14.1678 0.5449
2MM9318WI 0.4537 5.1643 11.7957 14.2043 0.5463
2MM9319WI 0.4557 5.4085 12.7607 15.2393 0.5443
2MM9320WI 0.4585 5.7746 13.2966 15.7034 0.5415
2MM9322WI 0.4617 6.2622 14.3126 16.6874 0.5383
2MM9324WI 0.4596 5.9438 13.7888 16.2112 0.5404
2MM9326WI 0.4580 5.7028 13.7392 16.2608 0.5420
2MM9328WI 0.4605 6.0759 14.7367 17.2633 0.5395
2MM9330WI 0.4531 5.1086 12.2348 14.7652 0.5469
2MM9332WI 0.4536 5.1589 12.2480 14.7520 0.5464
2MM9334WI 0.4559 5.4349 13.2209 15.7791 0.5441
2MM9340WI 0.4521 4.9931 12.2062 14.7938 0.5479
(1) For inner ring rotation.
(2) For outer ring rotation.
222 TIMKEN MACHINE TOOL CATALOG