Ball cage standard compact ultra compact type
Types:Standard ball cage retainer,Compast ball cage retainer,Ultra compact ball cage retainer( brass aluminum plastic base)Material:Base made of material alloy brass, plastic(resin pom),alloy aluminum.Aluminum can plate in bule black gold.Ball: GCr15 (chrome steel)
Grade:Ball steel must upon grade G10 roundness tolerance within 0.0025mmStandard ball cage specification download