Feature(may vary by option.)

●Bearings
●Note: Please do not choose according to the picture, please choose according to the product size provided, the angle of the internal diameter outside diameter to select the product.
●Bearing Road Bike MTB Headset Bearing Bicycle 39.7 50.8 7 40 51 6.5 51.8 8 52 mm
●Caged Bike ball bearing Description: Replace parts (crankshaft bearing, headsets, hubs).
●The diameter are measured inside and outside (its an approximate value in mm).

[U40x52x8 45x45 1 Pc]

Description

Bearings
We manufacture and use Angular Contact Bearings (ACB) for our headsets.
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.
O-39.7*50.8*7mm 270/270
Inner diameter：39.7mm
Outside diameter: 50.8mm
Thickness: 7mm
Angle: 270°/270°
P-40*51*6.5mm 36/36
Inner diameter：40mm
Outside diameter: 51mm
Thickness: 6.5mm
Angle: 36°/36°
Q-40*51.8*8mm 45/45
Inner diameter：40mm
Outside diameter: 51.8mm
Thickness: 8mm
Angle: 45°/45°
R-40*51.8*8mm 36/45
Inner diameter：40mm
Outside diameter: 51.8mm
Thickness: 8mm
Angle: 36°/45°
S-40*52*6.5mm 36/45
Inner diameter：40mm
Outside diameter: 52mm
Thickness: 6.5mm
Angle: 36°/45°
T-40*52*7mm 45/45
Inner diameter：40mm
Outside diameter: 52mm
Thickness: 7mm
Angle: 45°/45°
U-40*52*8mm 45/45
Inner diameter：40mm
Outside diameter: 52mm
Thickness: 8mm
Angle: 45°/45°