Roller Bearings

	                             Roller Bearing equations
	Please click the link below for a derivation of the equations associated with this animation. (Scroll down to continue reading).
The rollers must roll without slipping on both the inner and outer race, otherwise the wear rate would be very high.
We provide 2 motional conditions:
1. Rotate outer which is inner race stationary and which is analogous to the bearing for a car front wheel where the wheel rotates on the axle.
2. Rotate inner which is outer race stationary and which is analogous to rotation of a car drive axle rotating with respect to its housing.
We also provide access to the radius of the roller, the number of rollers, the orbit radius of the rollers, and the orbital angular speed of the rollers.
In addition, the learners have the option of single stepping the motion to convince thenmselves that the rollers do not slip on either the inner or outer race.
To help with the latter, evenly spaced tick marks at the edges of the rollers, the inner race and the outer race.

Roller Bearing Equations

Single Step Rotate Inner Rotate Outer

Roller Radius:60

The radius (half of the diameter) of the rollers

# of Rollers:8

The number of rollers

Orbit Radius:180

The distance from the center of the axle to the center of the roller

Orbit Angular Speed:0.01

The angular speed of the roller orbit expressed in radians per video frame (1 radian=(180 degrees)/pi)