Bearings
Bearing Type:Hybrid ceramic bearing
Beads: 7 Black Ceramic Beads
Suit For Inline Skate / SkateBoard /Freeline Skate / Drift Board / LongBoard
Rolling elements: 7 Blackceramic Beads, High Temperature, 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 highly corrosive environments or 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
Notice:
The Bearings is Hybrid Black Ceramic bearings,Please donot use the bearing to play jump or other strong impact action.And donot need to use Lubricants.