Bearing Sizes Guide for Scooters

Understanding bearing sizes is essential for maintaining the smooth operation of your scooter’s wheels, motors, and moving parts. Bearings reduce friction and ensure stability, so knowing their sizes helps with replacement or upgrades.

Key Points on Bearing Sizes

1. Inner Diameter (ID)

   • The measurement of the hole in the center of the bearing.

   • This diameter determines the shaft size the bearing can fit onto.

2. Outer Diameter (OD)

   • The total diameter of the bearing, measured from edge to edge.

   • Ensures that the bearing fits properly into the housing or wheel hub.

3. Width (W)

   • The thickness of the bearing.

   • Important for ensuring the bearing sits correctly in its housing without extra play or pressure.

Why Bearing Sizes Matter

• Using the correct bearing size ensures smooth rotation of wheels and motor shafts.

• Incorrect bearings can lead to increased wear, noise, or even failure of scooter components.

• Bearings often need replacement after extensive use, especially in high-performance or off-road scooters.

Tip

• Always verify the bearing dimensions before purchasing replacements. Some scooters may use metric sizes, so check the ID, OD, and width carefully.