... ,GCr15SiMn Gcr15-China, (AISI) 52100-USA, (DIN) ... 3).various of bearin Supply different kinds of good quality angular contact ball bearing,main features:1 ... -3, ABEC-56. Main application: motorcycle, motor, pump, sewing machine, textile machine, agriculture machinery, electric, tools, etc.7. Packing: individual box ...