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• Thrust Ball Bearing
• Item: ACB519H8; Closure: 2RS Sealed
• Construction: Ball Bearings; Angle: 45°x45°
• ID (inner diameter): 40 mm; OD (outer diameter): 51.9 mm width: 8 mm
• Standard bearing steel GCR15 inner and outer wheels and balls, G10 grade ball

Thrust Ball Bearing
Special construction
What is the next rotating component that can slow down and roll faster than patches that the tire touches the road?
When it comes to hubs, it's components are described more precisely as internal bearings.
And when you put this Hub Bearing ABEC-3 bearing inside, you have upgraded the hub to another level.
Polished and polished to ABEC-3 precision tolerances
Ceramic ball features a special retainer for less resistance.
PA66 cage keeps rolling with minimal drag and resistance.
The LLB seal repels stains and has a V-Groove Seal design that holds XHP-222 grease inside.
The ultimate protection for long run-time runs between services, is done at high speed.
Hub Bearing Guide
The hub is at the center of the motorcycle wheel (front and rear wheel) that connects to the rims of the wheel through the spoke, allowing the axle to be mounted and rotated freely with two pairs of bearings.
The bike has a dedicated hub on the front and rear wheels, such as the front and rear wheels. The front hub is designed to simply rotate the wheels, but the rear hub is a little more complicated because it forms part of the motorcycle transmission. The cassette or sprocket that drives the rear wheel is attached to the rear hub. Most bikes also have mechanisms to allow coast or freewheeling (except fixed gear or "fixy" bikes and trucks bikes).
Wheels rotate more than any other part of the bike. Therefore, using the best bearings in this application is extremely important for the best results.