Open 624 Ball Bearing 4mm x 13mm x 5mm Deep Groove Chrome Steel 52100 High Quality Open Type Bearing For Miniature Precision Machinery Durable Chrome Steel Construction And Long Term Reliability

The 624 open ball bearing is a compact, unsealed bearing designed for small machinery and hobby projects. It's commonly used in micro gearboxes, RC gear setups, and lightweight robotics where a simple, low-friction rotating element is needed.

✅ Bore 4 mm, outer diameter 13 mm, width 5 mm
✅ Material: 52100 chrome steel for durability
✅ Dynamic load rating Cr 1300 N; static rating Cor 490 N
✅ Lubrication: grease up to 44,000 RPM; oil up to 54,000 RPM

💡 What is a small 4x13x5 mm ball bearing used for in hobby machines?

These tiny bearings are handy for supporting rotating shafts in compact builds where space is tight.

- Handy for compact robotics, micro gearboxes, and tiny RC components

- Reduces friction in rotating shafts for smoother operation

- Easy replacement in projects using standard 4x13x5 mm bearings