... reasonable prices 2. ISO9001-2000 certificate approved, Four-Point Contact Ball Slewing Ring BearingAs SOCARE BEARING one main ... Balls & Supports, with compact conformation, light weight, the Steel Balls are Four Point Contacting with the arc Raceway, it can ... ,internal teeth ,external teeth4: Diameter range:200mm-----6500mm5: Weight range::75.8kg--------4000kg 6 Design and manufacture according to ...