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American trademark AISI440, Chinese trademark 9cr18, Hardness toreach 55~58 HRC, Specifications of diameter 2.0mm~40mm, which iswidely used in high-precision bearings, bearing-holders,sealing of precision products and refrigeration system, valves,instruments & meters, military fuse products, aero-space andaeronautical lines and other high precision mechanical parts.
Nonstandard dimensions customized are acceptable.
bearing ball
bearing ball
