Specialized S-works Roubaix Bottom Bracket Bearing Bicycle Bearing Inner Diameter - 47mm It's commonly used in light-duty

It's commonly used in light-duty applications such as electric motors

Needle Roller Bearing Shell Type HK5020

each R6ZZ Comes with double metal shields (ZZ) to keep out dust and dirt

50TAH10TDB Nachi Thrust Load Angular Contact Ball Bearing

ID (inner diameter)/Bore: 120mm

Specialized S-works Roubaix Bottom Bracket Bearing Bicycle Bearing Inner Diameter - 47mm It's commonly used in light-dutyBall Bearings for Specialized S works Roubaix Bottom Bracket Closures: Rubber Sealed Closure Side: Double Sided Seals Lubrication: Low Friction Grease Material: Corrosion Resistant Chrome Steel Balls: High Chromium Steel 52100 SAE Steel Balls Cage: Low Friction Steel Precision: ABEC 1 Quality Brand: VXB Quantity: Set of two Bearings