SUOFEILAIMU 627 Full Ceramic Bearing Double Seal ZrO2 Si3n4 Quad Skate Bearing 627 Abec-11 for Derby Roller Artistic Skating Bearings (Color : 1pc si3n4 627)

Description

• Dimensions: 7mmx 22mm x 7mm (Inner Diameter: 7mm, Outer Diameter: 22mm, Width:7mm)
• Size: 627
• Material of Inner and Outer Ring Balls: Zirconium oxide (ZrO2) full White Ceramic or Silicon Nitride(Si3N4) full black Ceramic
• Material of the Retainer: Ptfe cage
• Material Color of Seal: White Ptfe seal

Super high Speed quad Skates Bearing 627-2rs Abec11 ZrO2 White full ceramic or Silicon Nitride(Si3N4) Black Full Ceramica Skateboard Bearing for Pro-skate.
Please Note: We have two choices for you, one is Si3N4 black full ceramic bearing 627, the other is ZrO2 white ceramic bearing 627.
1) White ceramic Zro2 balls has the features of:
anti-rust, anti-dust, self-lubricated, high tenacity, high flexural strength,high abrasion performance and can bear high temperature.

2) Black ceramic Si3n4 balls has all the features better than Zro2 balls, most importantly, si3n4 balls can bear higher temperature, when the bearing is under very fast speed rotation,the balls wont expand. So that it can help to ensure a faster speed and longer life of the bearing.

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