Product: FreeSport 608Rs Hybrid Black Ceramic Bearings with Stainless Steel Rings
Use For: Inline Roller Skates Shoes,Speed Inline Roller Skating,FreeLine Skate (Drift Board),Skate board,LongBoard,Scooter,Quad Skate
Packet: 20.88$= 8 Piece Bearing
Bearing Type:Hybrid ceramic bearing
Beads: 7 Black Ceramic Beads (Si3N4)
Bearings Ring: Stainless Steel
Suit For :Inline Skate / SkateBoard /Freeline Skate / Drift Board / LongBoard
Cage :Nylon ,The material is suitable for highly corrosive environments or high speed scene.
Rolling elements:7 Blackceramic Beads, High Temperature and Corrosion Resistance,Abrasion resistance,High Revs.
Black Ceramic has better hardness and compressive strength than white Ceramic,that is why it expansive than White Ceramic Bearings.
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
1. Ceramic bearings,do not need Grease,it have special rustling sound
2.Super High Speed,Long Spin time
3.Stainless , do not rust