Commonly used rolling element materials

Commonly used rolling element materials

1. High carbon chromium bearing steel
High-carbon chromium bearing steels include GCr15, GCr9, GCr6, GCr15SiMn, etc., which are used to manufacture bearing rolling elements under normal working conditions. The current consumption accounts for more than 85% of the production of rolling elements.
2. Carburized bearing steel
Carburized bearing steel includes 08, 10, 25, 15Mn, G20CrMo, G20CrNiMo, G20CrNi2Mo, G20Cr2Ni4, G10CrNi3Mo, G20Cr2Mn2Mo, etc., which are used to manufacture impact-resistant bearing rolling elements. Generally, carbon steel balls are used to make lower-priced bearings, and alloy carburized bearing steels are used to make bearings for automobiles and rolling mills.
3. Stainless bearing steel
Stainless bearing steel includes 9Cr18, 9Cr18Mo, 0Cr18Ni9, 1Cr18Ni9, 1Cr18Ni9Ti, 1Cr17Ni2, 1Cr13, 2Cr13, 3Cr13, 4Cr13, etc., which are used to manufacture bearing rolling elements in corrosive media.

Special rolling element materials

1. High temperature bearing steel
High-temperature bearing steels include Cr4Mo4V (M50), W9Cr4V2Mo, Cr15Mo4V, W18Cr4V, W6Mo5Cr4V2, etc., which are used to manufacture high-temperature bearing rolling elements, and are used for high-temperature and high-speed bearings such as gas turbines and aero engines.
2. Medium carbon bearing steel
Medium-carbon bearing steels include GCr10, 40crA, 65Mn, 50CrNiA, 55SiMoV, etc., which are used to manufacture rolling elements subjected to impact loads, such as 55SiMoV used to manufacture rolling elements of turbodrill bearings.
3. Non-magnetic bearing materials
Non-magnetic bearing materials include G52, G60, 25Cr18Ni10W, Ocr40Ni55A13, QBe2.0, NiCu28-2.5-1.5.
①G52 is used to manufacture non-magnetic high temperature and high pressure water bearing rolling elements.
②G60 is used to manufacture bearing rolling elements in non-magnetic, high-temperature, high-vacuum and oxidizing media.
③25Cr18Ni10W is used to manufacture non-magnetic bearing rolling elements. ④Ocr40Ni55A13 is used to manufacture non-magnetic bearing rolling elements. ⑤QBe2.0 is used for non-magnetic low-temperature corrosion-resistant bearing rolling elements.
⑥NiCu28-2.5-1.5 is used to make non-magnetic, corrosion-resistant steel balls.