The boundary dimensions tolerance and rotational accuracy of deep groove ball bearing are classed as five grades subject to National standard of GB/T1307.1, they can match and interconvert with standard of ISO492, JISB1514 and ANSI/AFBMSTD20.

Their conventional comparison is shown in the following table:

XIR Bearing  Professional Manufacturing:

chinese bearing,axle bearing,tricycle bearing,Differential bearings,Transmission bearings,Motor bearings,Reducer bearing,Gearbox bearings

Shandong XIR Bearing Co.,Ltd.

Shandong XIR Technology Co.,Ltd.

Add:No.001,Mahuzhai Industrial Park,Tangyuan Town,Linqing City,Shandong,China

Tel: 86 635 8300355 

Cell: 86 13406379000 (Whatsapp/Wechat)

Email: sales@xirbearing.com 

Web: www.xirbearing.com