627z Quad Skates Artistic Skate Bearing Zro2 Or Si3N4 7x22x7mm Hybrid Ceramic Ball Bearing 627 DINGGUANGHE(8pcs ZrO2 Hybrid 627)

Description

• Dimensions 7 x 22 x 7mm (Inner Diameter: 7mm, Outer Diameter: 22mm, Width:7mm)
• Material: Blacken Chrome steel(Gcr15) inner& outer rings Zirconium CeramicaZrO2 6 beads Silicon Nitride (Si3N4) 6 beads
• Retainer and Seal White pom cage silver Iron Seal on one side
• Impact Load: 195kg~240kg

1 Precise and High Speed 6 pottery beads design
2. Single side sealed, less friction
3. Anti-rust ,self-lubricated ceramic balls
4. Excellent for professional quad Skating,artistic skates...
5. Ceramic Bearings can effectively avoid jumping skating and fierce playing!
Suited for: Quad skates, artistic skating...
Pls note: the color of box is at random.

We have two choices for this item:
One with White ceramic balls (ZrO2), the other with Black ceramic balls (Si3N4).
White ceramic ball zro2 hybrid ceramic 627z 7mm skate bearing:
Single side dust-proof seal.
Anti-rust,self-lubricate Zro2 white ceramic balls,6 balls precise design makes skating much faster.
Black ceramic ball si3n4 hybrid ceramic 627z 7mm skate bearing:
Black ceramic si3n4 balls can bear higher temperature, when the bearing is under very fast speed rotation, the balls won't expand,
so that it can help to ensure a faster speed and longer life of the bearing.
ZrO2 white ceramic balls are very good, Si3N4 black ceramic balls are even better

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