8 Skateboard Ceramic Bearing:Sealed:9 Balls:ABEC-7
	Part Number: Kit7951 Our Low Price: $49 Shipping Weight: 0.4 pounds
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Set of 8 Ball Bearings ABEC-7 Quality 8mm x 22mm x 7mm Steel cage with 9 Ceramic Balls Si3N4 Ceramic Balls Rubber Sealed

Set of 8 skateboard bearings, the set has 8 ABEC-7 Ball Bearings with Ceramic Balls, Bearings are Rubber sealed, the cage has 9 Ceramic balls, the 9 balls are made of Ceramic Si3N4 (Silicon Nitride), each bearing has 2 Rubber seals to protect the bearing from dust or any possible contamination, these are self lubricated bearings. Dimensions: 8*22*6 mm/Metric ID (inner diameter)/Bore=8mm OD (outer diameter)=22mm Width/Height/thickness=7mm Equal: 608-2RS1 &608-2RZ Item: 608 Ball Bearings 8x22x7 608RS Type: Deep groove ball bearings 608RS Balls: 9 Si3N4 (Silicon Nitride) Ceramic balls Closures: Seals 608RS Quality: ABEC-7 Quantity: Set of 8 Bearings Bearing Size: 8mm x 22mm x 7mm

Ball Bearings

Ball Bearings main function is to minimize the friction caused by any relative movement of two or more objects, in order to reach the maximum efficiency of energy usage, we aim to minimize the "converted to heat" energy by using Ball Bearings.
A great variety of Ball Bearings types and Ball Bearings designs are known, the manifolds of the ball bearings is justified by their various purpose of the ball bearings needed application, each type of ball bearings has a certain characteristic technical properties, rolling ball bearings have the following advantages compared with the plain bearings:

• Low starting moment.
• Low friction at all speeds.
• Low energy consumption.
• High reliability.
• Small width.
• Low consumption of lubricant.
• Long relubrication intervals.
• Easy to mount and dismount.
• Standardized dimensions.