Ball pin material:The material is manufactured from bearing steel.
Ball pin product features:High hardness, excellent wear resistance, and long rolling time; hardnessHRC60～64Surface RoughnessRaNot greater than0.2。 
Roller Needle Product Types:Flat head roller needles, round head roller needles, corrected line roller needles, etc.
Roller Pin Applications:High-precision needle roller and ball and roller products produced by Qingdao Yuken Bearing are widely used in the fields of automobiles, subways, machine tools, construction machinery, bearings, and electrical products.