... SKF NSK FAG TIMKEN KOYO NACHI ball bearing 2.OEM and customized available3.ISO9001:2008 4.Material:GCr15siMn Brand: SKF,FAG ... ,NSK,TIMKEN KOYO NACHI Specification1.Product name:deep groove ball bearing2.Precision ... steel, etc,4. Retainer: copper cage, nylon retainer, steel retainer5. Sealing form: OPEN, Z,ZZ,RS, 2RS china fabric glass ball bearing