Example #1: A Bearing Vibrates 100 Mils Pk-Pk @ 30 cpm

Displacement @ 1x rpm = 100 mils	Displacement @ 1x rpm = 2540 um
English Units: Velocity = 0.000052 x D x F V = 0.000052 x 100 mils x 30 cpm	Metric Units: Velocity = 0.000052 x D x F V = 0.000052 x 2540 um x 30 cpm
V = 0.16 ips	V = 4 mm/sec
Acceleration = 0.00027 x V x F A = 0.00027 x 0.16 x 30	Acceleration = 0.0000107 x V x F A = 0.0000107 x 4 x 30
A = 0.0013 g's	A = 0.0013 g's

Failure Likelihood: Stress = HIGH Fatigue = Low Force = None

What unit is best to monitor with at this frequency ? Displacement