The KAYDON Angular contact ball bearing  KD042AR0 ,this is thin section or slim bearing , the thin section bearing have high precision,and very quite, high load. The slim bearing including three kinds design, including deep groove ball bearing, four point contact ball bearing, angular contact ball bearing, and the space is very little, Most of cross section is square,even if the large shaft diameter or bearing bore, the cross section keep original. 

The quality standard: GB/T 292-2007 rolling bearing-angular contat ball bearing dimension

The Bearing KD042AR0 inner ring and outer ring ball forging material:AISI 52100 Type steel vacuum degassed, AISI440C Stainless steell.
The manufacture process including: Lathe process, Heat treatment process, Grinding process, Assembly process and final inspect process and on on.
The package: standard export wooden case or carton boxes.

The KAYDON Angular contact ball bearing KD042AR0  applicantion:Aerospace and astronomy instrumentation,Fixturing and workholding equipment,Food processing equipment, glassworking equipment, index and rotary tables, packaging equipment,machine tools, medical devices,optical scanning equipment, tire making equipment, radar,satellite and communication equipment, robotics, textile machinery,tube and pipe cutting machines, semiconductor manufacturing equipment, sorting equipment and so on.