10 Pack 4x7x2 Stainless Steel Open ABEC-3 Miniature Ball Bearings Deep Groove 4mm Bore 7mm Outer Diameter 2mm Width For Precision Small Machinery And Hobby Projects

10-Pack 4x7x2 ABEC-3 Stainless Miniature Bearings
✔️ 10 bearings, 4x7x2 mm, stainless steel, open ABEC-3

These compact ABEC-3 stainless steel open bearings are built for precision in small motors, robotics, and hobby gear. They fit 4 mm shafts and 7 mm outer diameters, making them ideal for lightweight, high-speed applications.

✅ Inner diameter: 4 mm
✅ Outer diameter: 7 mm
✅ Width: 2 mm
✅ Material: Stainless steel
✅ ABEC-3 precision grade
✅ Open bearing design (no shields)
✅ Dynamic load rating Cr: 260 N
✅ Static load rating Co: 110 N
✅ Maximum speed (grease): 64,000 RPM; (oil): 76,000 RPM
✅ Pack of 10 bearings

💡 What is a ball bearing used for in small mechanical projects? Bearings reduce friction and support rotating parts in tight spaces.
- Reduces friction on rotating shafts
- Supports radial loads in compact assemblies
- ABEC-3 provides a good balance of precision and durability
- Handy for small motors, RC models, and lightweight machinery