Commonly known as Rotary Fatigue or Bending Moment Fatigue, this test evaluates the wheel's ability to sustain fatigue caused by vehicle cornering.  ITS has two types of cornering machines: rotating bending and eccentric mass.  Both styles of machine allow for testing up to 26” diameter and 13,000 ft-lb and can be set up to test motorcycle, military, agricultural and ATV wheels. 

Rotating Bending:

The wheel spins while attached to a moment arm.

Cornering Fatigue Testing - Independent Test Services - hayesrotary

Eccentric Mass:

The wheel is stationary but an eccentric mass spins internally, creating a moment which allows the eccentric mass cornering fatigue to complete more than twice the amount of cycles in the same time as the rotating bending machine.