Performance Requirements for Precision Rollers

Rolling fatigue strength: Precision Rollers bearings undergo repeated rolling contact and impact during operation, so the ideal material should have high rolling fatigue strength to ensure that early fatigue failure does not occur under long-term high loads.

Hardness: Materials with high hardness can reduce the wear of the roller surface in rolling contact, improve the service life and working accuracy of bearings.

Wear resistance: The Precision Rollers material needs to have excellent wear resistance to resist friction losses with the raceway or other matching components.

Mechanical strength: including elastic limit and yield strength, ensuring the structural stability of the roller under static and dynamic loads, and avoiding plastic deformation or fracture.

Hardness uniformity: The uniform distribution of overall hardness helps to maintain the rotational accuracy and stability of bearings.

Impact toughness: Especially in the presence of impact loads or vibrations, the roller material should have sufficient toughness to absorb and disperse impact energy, preventing crack formation.

Dimensional stability: The material should maintain good dimensional stability during temperature and load changes, avoiding changes in bearing clearance caused by thermal expansion, contraction, or stress relaxation.