Summoned by Luoyang Bearing Research Institute Co., Ltd. and mainly set by FK Bearing Group Company Limited, three national standards for bearing units were issued by SAC (Standardization Administration of the People's Republic of China) on 12th May, 2017 and will be implemented from 1st December, 2017.

The national standards are listed below:
1. GBT/T3882-2017
Rolling bearing-Insert bearing and eccentric looking collars-Boundary dimensions 
2. GB/T7809-2017
Rolling bearing-Housing for insert bearings-Boundary dimensions
3. GB/T7810-2017
Rolling bearings-Insert bearing units-Boundary dimensions

With the development of technology and upgrade of the bearing units' working capability, the quality of the bearing units also keeps improving. Therefore, the standard of bearing units are supposed to be raised at the same time, creating a positive role in of regulating and leading the industry. 

Concentrated on the principle of  "keeping improvement", FK will be committed to developing the  bearing units products as usual, leading the upgrade of the bearing units' standard as well as promoting sustainable development of bearing units.

You can download PDF here about these national standards for bearing units.