Ball Bearing

Ball Bearing inside and outside ferrule,steel ball material should be Bearing steel(vacuum heat treatment).
Most of Ball Bearings use SUJ2 of JIS steel genus,which is also called GCr15 in our nation inner.
The chemistry component of SUJ2 in world countries as Ball Bearing material is standard.
For SUJ2 is the same steel as AISL52100(U.S.), DIN100Cr6(West Germany), BS535A99(U.K.).
Using this material it can improve Ball Bearing gnarl matrix capability,reduce noise and extend natural life effective.
But in dampness or high temperature circumstance,you should choose Mar bodily form stainless steel material to make Ball Bearing.