Bearings, Hybrid Ceramic Bearings 1pcs ABEC 7 2x5x2.5 SMR52 ZZ CB Hybrid Ceramic Bearing SMR52C ZZ L520ZZ Mini Reel Bearing 2 * 5 * 2.5 RC Bearing(SMR103C-ZZ 3x10x4mm),High Hardness and Toughness(Smr

Bearing NO.: SMR52C-ZZRings Material: 440C Stainless SteelBalls Material: Si3N4 CeramicInner Diameter: 2mmOuter Diameter: 5mmWidth: 2.5mmPrecision: ABEC-7(P4)Seal Type: Metal ShieldLubrication: Self-Lubrication(No grease or oil)Feature: High speed, Drylubrication, insulation.Since monitors are not calibrated same, item colors displayed in photos may be showing slightly different from the actual item.Please allow 0-1 inch error due to manual measurement.

• Bearings are sealed to retain lubricant
• The rotation speed is faster, the ceramic ball has oil-free self-lubrication, and the friction coefficient of the ceramic ball is small, so the rotation speed of the ceramic ball bearing can reach 1.5 times or more.
• Long life: Since it does not use grease and uses ceramic balls, it has a lifespan 2 to 4 times longer than ordinary bearings.
• Insulation. Ceramic ball bearings insulate the inner and outer bearing rings.