Skateboard Bearings categorized by the material of inner/outer races, the cage, the balls and the closures, usually rubber seals or metal shields, skateboard bearings fits all the longboards, skateboard bearings are also used in many skate applications like inline skate, roller hockey, rollerblades and street luge. Inner and Outer Race Material: Carbon, Chrome and Stainless steel are your options, ceramic are also an expensive option. Balls material: the bottom line is to reduce friction,  silicon nitride ceramic, Zirconia ceramic and steel. Retainer material: bakelite, nylon, bronze and steel. Lubrication: Iany multi-purpose oil, since a skateboarder can always take good care of his hardware, grease will make your wheels hard to free-spin, the stainless steel bearings can run dry and that would the best environment. Closures: used to protect the moving parts of your ball bearings from outside contaminations. If you are skateboarding in a perfect environment with no dirt, no water and no humidity; then you can always use your ball bearings without closures.
Model No.: skateboard wheel bearings 
Brand Name: CWB 
specification: Skateboard,skateboard wheel 
functions: slide move of skateboard 
certificate: ISO9002 
expRegion: Worldwide 
Place of Origin: Zhejiang 
Payment & Shipping Terms:
Payment Term: T/T or L/C at sight, D/P
MOQ: 1000 pcs
Means of Transport: By sea,by air and by railway
Supply Capacity:
Production Capacity: 1000,000pcs/month
Packing: Industry packaging or OEM
Delivery Date: 20 days after confirmation

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