Timken Super Precision Bearings for Machine Tool Applications

SUPER PRECISION
2MM200WI 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)
2MM200WI 0.3668 1.6722 2.9345 5.0655 0.6332
2MM201WI 0.3699 1.7226 3.3290 5.6710 0.6301
2MM202WI 0.3855 1.9898 3.8552 6.1448 0.6145
2MM203WI 0.3861 2.0025 3.8609 6.1391 0.6139
2MM204WI 0.3857 2.0000 3.8570 6.1430 0.6143
D
2MM205WI 0.4008 2.3347 4.8091 7.1909 0.5992
2MM206WI 0.4001 2.3182 4.8007 7.1993 0.5999
2MM207WI 0.3997 2.3104 4.7965 7.2035 0.6003
2MM208WI 0.3980 2.2638 4.3777 6.6223 0.6020
2MM209WI 0.4058 2.4683 5.2757 7.7243 0.5942
2MM210WI 0.4126 2.6716 5.7757 8.2243 0.5874
2MM211WI 0.4110 2.6263 5.7543 8.2457 0.5890
2MM212WI 0.4098 2.5901 5.7376 8.2624 0.5902
2MM213WI 0.4130 2.6906 5.7818 8.2182 0.5870
2MM214WI 0.4135 2.7082 5.7891 8.2109 0.5865
2MM215WI 0.4177 2.8554 6.2659 8.7341 0.5823
2MM216WI 0.4164 2.8064 6.2462 8.7538 0.5836
2MM217WI 0.4152 2.7649 6.2281 8.7719 0.5848
2MM218WI 0.4142 2.7301 5.7984 8.2016 0.5858
2MM219WI 0.4132 2.6992 5.7853 8.2147 0.5868
2MM220WI 0.4125 2.6714 5.7744 8.2256 0.5875
2MM222WI 0.4110 2.6263 5.7543 8.2457 0.5890
2MM224WI 0.4131 2.6927 5.7830 8.2170 0.5869
2MM226WI 0.4192 2.9059 7.1260 9.8740 0.5808
2MM230WI 0.4124 2.6714 6.1865 8.8135 0.5876
(1) For inner ring rotation.
(2) For outer ring rotation.
A
232 TIMKEN MACHINE TOOL CATALOG