4pcs 608 Hybrid Black Ceramic Stainless Steel Bearings ABEC-9 Bearing for Inline Roller Skates Skateboard Scooter Caster Board DINGGUANGHE

Description

• Feature:
• 1. Ceramic bearings,do not need Grease,it have special rustling sound
• 2.Super High Speed,Long Spin time
• 3.Stainless , do not rust
• Product: 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.

Bearing Type: Hybrid ceramic bearing
Beads: 7 Black Ceramic Beads (Si3N4)
Bearings Ring: Stainless Steel
Cage: Nylon ,The material is suitable for highly corrosive environments or high speed scene.
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.
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

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