... quality and reasonable prices 2. ISO9001-2000 certificate approved, Four-Point Contact Ball Slewing Ring BearingAs SOCARE BEARING one main series ... , with compact conformation, light weight, the Steel Balls are Four Point Contacting with the arc Raceway, it can bear both Axdial ... bearing china bearingroller bearing slewing bearingbig bearing ball bearings Four-Point Contact Ball Slewing Ring Bearing