608 Bearing, 20 PCS ABEC-9 Miniature Metal Bearings, Double Shielded Stainless Steel Bearings for Long Skateboards, Four-Wheel Skates, and Wheels, Frictionless and Durable Performance

ABEC-9 Precision 608 Bearing - CNC-ground chrome steel races deliver ±0.001mm radial runout for vibration-free performance at 15,000 RPM. These 608 bearing units meet ISO 492 Class 6X standards, achieving 0.3dB noise levels ideal for competition skateboards and electric longboard conversions. Industrial-Grade Protection - Dual nitrile rubber shields on these 608 bearing units retain high-speed grease while blocking track debris and beach sand. The anodised black retainers resist saltwater corrosion in coastal skate parks and marine robotics applications. Extreme Sports Optimised - Hardened steel balls in these 608 bearing cores withstand 200kg impact loads from vert ramp landings. The cryogenically treated races maintain -20°C to 150°C thermal stability for winter street skating and desert downhill racing. Multi-Industry Compatibility - These 608 bearing adaptors fit Bosch power tool gearboxes and 3D printer carriages with 22.23mm OD precision. Includes installation mandrel for press-fitting into aluminium longboard wheels without deformation. Pro Maintenance Ready - The removable C-clips on these 608 bearing units enable track-side re-lubrication. Each 8-pack includes ceramic hybrid options for electromagnetic-sensitive applications like MRI machine rollers and drone motor upgrades.