623 オープン型ミニチュアボールベアリング3mm x 10mm x 4mm 深溝ベアリングChrome Steel 52100 精密マイクロ機械用オープンベアリングRC 模型・ドローン・ホビー用Inner Diameter 3mm Outer Diameter 10mm Width 4mm

Compact 623 open ball bearing 3x10x4 in chrome steel
✔️ ID 3mm, OD 10mm, W 4mm, chrome steel bearing, 1 pc

This tiny, single-bearing 623 open ball bearing is designed for compact assemblies such as hobby machines, RC gear, and precision slides that require a slim chrome steel bearing.

✅ Inner diameter 3 mm
✅ Outer diameter 10 mm
✅ Width 4 mm
✅ Material Chrome steel (52100)
✅ Dynamic load rating Cr 640 N
✅ Static load rating Cor 230 N
✅ Open bearing (no shields)
✅ Max speed grease 52,000 RPM; oil 63,000 RPM

💡 What is a small ball bearing used for in hobby machines and model builds? This handy guide helps with smart choices.

- small applications in hobby gear and model projects
- choosing inner/outer diameter, width, and load for reliability
- maintenance tips: lubrication, mounting, and clearance