Damage status: crack refers to the crack damage raceway wheel or roller.
If continue to use, will also include the development of the crack fracture.
Reason: greater than surplus quantity.
Too much load, impact load.
Because of the raceway contact of wheel and install components of fever and micro vibration wear.
Fever caused by creep.
The cone shaft taper Angle.
Axis of the cylindricity.
Steps of the shaft radius is bigger than bearing chamfer and cause interference with bearing chamfer.
Appropriate measures: interference quantity.
Check the load conditions.
Improve the installation method.
The shape of the shaft to appropriate.