The inner and outer rings are made of bearing steel GCR15.
Steel balls are made of G10 bearing steel GCR15.
Special grease for headset bearing is added inside.
There are 2RS Black Double-sided Sealed.
وصف
Item: ACB518H7.5K 2RS
Material: GCR15 Bearing Steel
Closures: 2RS Black Double-sided Sealed
Inside and Outerside Bevel: 36°/45°
Dimensions: 40x51.8x7.5mm
ID (inner diameter): 40 mm
OD (outer diameter): 51.8 mm
Width: 7.50 mm
Bicycle bearings are precision components that enable smooth rotation in various bike parts including wheels (hubs), steering (headsets), drivetrain (bottom brackets), and pedals.