Stainless steel ball bearings are also called stainless steel bearings or stainless bearings.Usually,the stainless steel used in ball bearings are belong to a martensitic-type stainless steel which can meet the needs in bearings hardness,corrosion resistance and dimensional stability.

 Compared with ordinary chrome steel ball bearing, Stainless steel ball bearings can keep from corrosion caused by some acids or moisture,and stainless steel ball bearings have obvious advantages of stable operation, low noise, low magnet, wide application, excellent anti-corrosion and anti-rust properties.   But stainless steel ball bearings are more difficult and strict than ordinary bearings in technology and precision control.

Stainless steel ball bearings  can be widely used in the fields of medical equipment, cryogenic engineering, optical instruments, high-speed machine tools, high-speed motors, precision clocks,printing machinery, wind speed measuring instruments, food processing machinery, scanners and fishing reels etcs.

Stainless steel ball bearings are just suitable for applications in little corrosive environments , corrosive environments with seawater,stronger alkalis and stronger acids are not recommended,it will greatly affected the corrosion resistance of stainless steel ball bearings.

Runstar is a professional stainless steel ball bearings manufacturer in china since 2007,certified ISO9001:2015.we have full metric and inch stainless steel miniature bearings, there are open type, with shields and rubber seals for choice.

Usually, there are stainless steel 440(9Cr18),stainless steel 420(9Cr13) for choice in Runstar, stainless steel 316 is sometimes available for special application.