72 Pieces Ball Bearings 627ZZ/687ZZ/624ZZ/685ZZ/623ZZ/693ZZ

Made of carbon steel, this ball bearing provides high speed, low noise and excellent temperature resistance. Each mini ball bearing is equipped with ZZ protective covers on both sides, which effectively prevent the penetration of dust, dirt and moisture. High performance grease is applied at the factory, reduces friction and makes bearings low maintenance. Precision manufacturing ensures extremely low friction resistance and minimizes energy loss. The bearings rotate at high speed, with little noise and no vibration, which effectively reduces overheating. Ideal for applications requiring stable and efficient operation at high speeds. This set includes 72 ball bearings divided into 6 sizes (12 pieces each): 7×22×7mm (627ZZ), 3×8×4mm (693ZZ), 4×13×5mm (624ZZ), 5×11×5mm (685ZZ), 3×10×4 mm (623ZZ) and 7×14×5 mm (687ZZ) – respectively inner diameter × outer diameter × width. These ball bearings are widely used in various small machines, including 3D printers, skateboards, roller skates, scooters, children's vehicles, toy models, micro-/stepper motors, drills, laser engravers, measuring instruments and office equipment.