... Good wearing, excellent surface quality and high hardness. 5) Application: Bearing, ball screw, linear motion guide, automotive parts, chemical, food ... processing, ink and paint grinding, caster wheel, slide rail bicycle and car. Chemical Composition: C% Si % Mn % ... ELASTICITY 29, 500, 000 PSIDENSITY . 283 LBS. /CU. IN. Bearing balls from china linqing yuanyi bearing factory