Raw Material Mangement
COK Bearing Uses Premium Row Material Supplier Like Jiangyin Xingchen Steel,Baosteel etc.And Purchased Materials Will Be Fully Inspecting Again By COK Before Acceptance.

Advanced Heat Treatment

All COK Bearing Products Will Be Proceeded By Baynite Salt-Bath Heat Treatment,same as World First Level Brand Products.

Advance Grinding Procedure
The Super Griding Procedure of COK SRB Is Very Special,We Grind The Double Raceway Of The Bearing Simultaneously. The Symmetry Of The Raceway Will Be Highly Improved, And Bring The Bearings With Longer Lifespam.