... maching allowance no burrs,no holes,smooth and bea Ball race bearing ToleranceAs you drawing and different series consider ... series, 6800 series, 6900 series, etc.2.Angular contact ball bearing: 7100series, 7200series, 7300series, 7400series, etc.3.Taper ... series, UCP series, UCF series, UCFL series7.Self aligning ball bearing: 1200series, 1300series, 2200series, 2300series Ring MaterialChrome Steel , ...