The sliding velocity for bushings and thrust washers results from the equation:
v = 5.82 × 10-7× d × ß × f
Where:
v
sliding velocity, m/s
d
bore diameter of bushing mm
= mean diameter of thrust washer mm
(dimension J in bearing tables)
f
angular frequency or rotational frequency, min-1
ß
half turning angle in degrees (see illustration bottom)
= 90° in case of rotational movement
Drawing turning angle
The complete oscillation = 4 ß
i.e., from point 0 to 4
Determination of bearing size
Sliding Velocity Factor c2
Increasing sliding velocity will lead to increased heat generation in the sliding surface; the wear rate increases. Therefore, the velocity factor c2 has to be considered when designing the bearing.
Velocity - 
