Feature

●Bearings
●Product: High Revs Hybrid Black Ceramic Bearings
●Use for Inline Roller Skates Shoes,Speed Inline Roller Skating,FreeLine Skate (Drift Board),Skate board,LongBoard,Scooter.
●Notice:
●The Ceramic Bearings donot need to use Lubricants.


Description

Bearings
Bearing Type:Hybrid ceramic bearing
Beads: 7 Black Ceramic Beads (Si3N4)
Rolling elements:7 Blackceramic Beads, High Temperature and Abrasion resistance,High Revs.
Black Ceramic has better hardness and compressive strength than white Ceramic,that is why it expansive than White Ceramic Bearings.
bearing ring:High Quality bearing steel
Cage :Nylon ,The material is suitable for high speed scene.
Shield:two-sided dust cover
Size: 8 * 22 * 7 (Inner * Outer * Height) / Unit: mm
Limiting speed: 22,000 rev / min
Comparison of Tolerance Class: ABEC-9