20 Pack 693ZZ Mini Ball Bearings (3x8x4mm) Double Shielded Carbon Steel Precision Ball Bearings for Skateboards, Trolleys, Electric Motors and More

PRECISE DIMENSIONS - This kit includes 20 pcs 693ZZ mini ball bearings with precise dimensions:inner diameter 3mm, outer diameter 8mm and thickness 4mm. Perfect for applications with limited space and versatile needs. High-quality material: the ball bearings are made of robust carbon steel and offer high resistance to deformation and a long service life, ideal for heavy duty use and high loads. POWERFUL AND DURABLE - Thanks to the double shielding, the 693ZZ bearings protect against dust and allow quiet operation at high speeds. They support radial and axial loads. VERSATILE APPLICATIONS Small ball bearings are suitable for skateboards, trolleys, electric motors, machinery, bicycles, lawn mowers and other mechanical devices. MAXIMUM ACCURACY: With ABEC-1 (P0) tolerance, low noise Z2 properties and high temperature resistance, these bearings provide optimal efficiency and performance for demanding projects.