Angular Contact Bearings Bike Headset Bearings 2PCS 30.532.739.74041.84748.9786.5 36/36 36/45 45/45 ACB Road MTB Angular Contact Bicycle Bearing Bearings

BearingsChromium Steel long-life bearings smooth and low noise.Item : I 45/45Inside Diameter : 30.4 mm Outside Diameter : 43.8 mm Thickness : 7 mmInner Chamfer : 45 degreeOuter Chamfer : 45 degreeItem : H 45/45Inside Diameter : 30.5 mm Outside Diameter : 41.8 mm Thickness : 8 mmInner Chamfer : 45 degreeOuter Chamfer : 45 degreeItem : A 36/45 Inside Diameter : 32.2 mm Outside Diameter : 38 mm Thickness : 6.5 mmInner Chamfer : 36 degreeOuter Chamfer : 45 degreeItem : F 45/45Inside Diameter : 32.7 mm Outside Diameter : 41.8 mm Thickness : 6 mmInner Chamfer : 45 degreeOuter Chamfer : 45 degreeItem : J 30/45Inside Diameter : 33 mm Outside Diameter : 43.8 mm Thickness : 7 mmInner Chamfer : 30 degreeOuter Chamfer : 45 degreeItem : Stainless L46.8 45/45Inside Diameter : 34 mm Outside Diameter : 46.8 mm Thickness : 7 mmInner Chamfer : 45 degreeOuter Chamfer : 45 degreeItem : L46.9 45/45Inside Diameter : 34 mm Outside Diameter : 46.9 mm Thickness : 7 mmInner Chamfer : 45 degreeOuter Chamfer : 45 degreeItem : L47 45/45Inside Diameter : 35 mm Outside Diameter : 47 mm Thickness : 8 mmInner Chamfer : 45 degreeOuter Chamfer : 45 degreeItem : M 36/45Inside Diameter : 37 mm Outside Diameter : 48.9 mm Thickness : 7 mmInner Chamfer : 36 degreeOuter Chamfer : 45 degreeItem : O 270/270 Inside Diameter : 39.7 mm Outside Diameter : 50.8 mm Thickness : 7 mmInner Chamfer : 270 degreeOuter Chamfer : 270 degreeItem : Stainless P 36/36 Inside Diameter : 40 mm Outside Diameter : 51 mm Thickness : 6.5 mmInner Chamfer : 36 degreeOuter Chamfer : 36 degreeItem : Q 45/45Inside Diameter : 40 mm Outside Diameter : 51.8 mm Thickness : 8 mmInner Cham

• Bearings
• Bearing seal cross-section: The manufacturing process begins with the rough shape of the bearing races being machined from high quality steel. Both the inside and outside of each race is then precision stone-ground to reach its final shape.
• Computer controlled grinding equipment is used to grind each race to exact tolerances.
• The races are then assembled with the balls to create the finished bearing.