60 Piece Miniature Ball Bearing Set Carbon Steel Deep Groove Bearings 693ZZ 623ZZ 624ZZ 685ZZ 687ZZ 627ZZ Double Shield For High Speed Brushless Motors Fans RC Drones And Precision Equipment ID 3mm 4mm 5mm 7mm OD 8mm 10mm 11mm 13mm 14mm 22mm Thickness 4mm

60-Piece High-Speed Miniature Ball Bearing Set for Motors
✔️ Six sizes: 3-7 mm IDs; 8-22 mm OD, double shields

These compact, double-shield deep groove bearings are made from carbon steel and designed for high-speed brushless motors, small fans, and other precision, space-constrained gear systems.

✅ 693ZZ: 3x8x4mm / 0.11x0.31x0.15in, carbon steel, double shield
✅ 623ZZ: 3x10x4mm / 0.11x0.39x0.15in, carbon steel, double shield
✅ 624ZZ: 4x13x5mm / 0.15x0.51x0.19in, carbon steel, double shield
✅ 685ZZ: 5x11x5mm / 0.19x0.43x0.19in, carbon steel, double shield
✅ 687ZZ: 7x14x5mm / 0.27x0.55x0.19in, carbon steel, double shield
✅ 627ZZ: 7x22x7mm / 0.27x0.86x0.27in, carbon steel, double shield

💡 What is a handy small bearing used for in hobby and DIY projects involving compact motors and gear systems?

Small bearings like these help reduce friction in tight spaces and support precise motion.

• Use cases: micro motors, drones, RC gear, small fans
• Benefits: smooth operation, low noise, high-speed capability
• Mounting tips: press into light housings or frames with minimal preload