608-Black Skateboard Bearings ABEC-9 608 V RS Surface Black PA66 Cage Ball Bearing 8x22x7mm

bearingBearings608 as the world's most common bearing model, is widely used in skateboarding, roller skating, air conditioners, CNC and other fields.The bearing requirements for each area are different.1. Why do the bearings I receive have shaking?The clearance of the bearing is related to the play.The default is the standard C0 clearance, which is usually 3-18um.The corresponding principle is shown in the figure below.If you don't need to shake, please choose C2 small clearance bearing.2. Do I still need to add grease to the bearings?Grease does not need to be added extra Because the bearings are pre-filled with grease at the factory.You can refer to Youtube video to learn about the production process.If you have special use requirements, please operate under the guidance of a professional.3. What is the accuracy of ABEC-1?ABEC is the American ANSI standard.The corresponding German DIN standard and international ISO standard are as the pictures4. Why do stainless steel bearings can be sucked up with magnets?Standard bearings are made of chrome steel. For special environments, stainless steel bearings are used.Commonly used stainless steel materials are 440C, 420, 304, 316.Except that 316 is non-magnetic material, Other stainless steel materials will have weak magnetic,This is determined by the composition properties of the material itself.Widely used in household appliances, garden machinery, outdoor vehicles, industrial production, etc. Suitable for skateboards, longboards, inline skates, scooters, robots, ship rudder axles, etc.Features: small friction, fast speed, smooth, low noise.

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