The rolling bearing material is the foundation of the bearing quality. The material used to make the bearing part has a significant effect on bearing performance, life and reliability. Commonly used rolling bearing materials are as follows:



1. Full quenched steel, bearing rings and rolling elements material using the whole quenching high-carbon chromium bearing steel. Commonly used materials are GCr15, GCr15SiMn or GCr18Mo steel. High-carbon chromium bearing steel by martensite or bainite heat treatment, the hardness of up to 58-65HRC.


2. Surface hardening steel, also known as carburized steel. After surface carburizing heat treatment, the surface hardness of up to 60HRC above the organization of good toughness (32-48HRC), suitable for large impact load occasions. Commonly used materials are G20Cr2Ni4A, G20CrNi2MoA, G10CrNi3MoA, G15CrNi4MoA and so on.


3. Induction hardened steel, commonly used in slewing bearings. Using the surface induction hardening method, only the local surface of the bearing parts (such as raceways) can be quenched, while the other surfaces are not affected by the quenching, so that the same material can have different properties. Commonly used materials are 42CrMo, 50Mn, 5CrMnMo and so on.


4. High temperature bearing steel, the working temperature is higher than 350 degrees or the working temperature exceeds 250 degrees for a long time. Commonly used finished products are Cr4Mo4V, W18Cr4V and so on.


Luoyang Huigong Bearing Technology Co., Ltd. can provide rolling bearings manufactured by all materials. Any inquiry, please feel free contact us.