Description
Shielded (ZZ or Z suffix) scooter bearings of this size are commonly used in wheels, transmissions, gearboxes, and various other GY6/QMB139 engine components.
These single-row, deep groove ball bearings are designated as medium-weight and feature a 12 mm diameter bore hole.
Be sure to check your existing bearings for the series number, which is often etched onto the outside wall of the bearing.
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Specifications
Diameter (Inner): 12 mm
Width: 12 mm









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