36-Piece Ball Bearing Kit, Deep-Groove Steel Bearings 608ZZ 623ZZ 627ZZ 6000ZZ 6903ZZ 6203ZZ for 3D Printers, Skateboards, Motors, Linear Slide Units, Sealed Double-Shielded, ABEC3 Pre-Lubricated

36-piece deep groove sealed ball bearing kit
✔️ 36 bearings (6 sizes), ABEC3 precision, double metal shields, pre-lubed

This 36-piece sealed ball bearing set includes six deep-groove steel sizes for 3D printers, skateboards, motors, linear slide units, and DIY projects.

✅ 608ZZ: 8 x 22 x 7 mm (0.32 x 0.87 x 0.28 in), 8 pcs
✅ 623ZZ: 3 x 10 x 4 mm (0.12 x 0.39 x 0.16 in), 8 pcs
✅ 627ZZ: 7 x 22 x 7 mm (0.28 x 0.87 x 0.28 in), 8 pcs
✅ 6000ZZ: 10 x 26 x 8 mm (0.39 x 1.02 x 0.32 in), 4 pcs
✅ 6903ZZ: 17 x 30 x 7 mm (0.67 x 1.18 x 0.28 in), 4 pcs
✅ 6203ZZ: 17 x 40 x 12 mm (0.67 x 1.57 x 0.47 in), 4 pcs
✅ Material: bearing steel, double metal shields (ZZ), pre-lubricated, ABEC3
✅ Packed: 36 bearings in a clear plastic storage case for easy use

💡 What is a sealed ball bearing used for in 3D printers and linear slide units? Sealed ball bearings help keep motion smooth while blocking contamination and cutting maintenance time. - Smooth rotation and low noise for stepper motors, extruder assemblies, and linear slide units that need precise motion control. - Sealed design keeps dust, filament debris, and lubricant inside, extending service life in hobby and industrial gear. - Handy for skateboards, scooters, conveyor systems, furniture wheels, and small motors where sealed ball bearing reliability matters.