6311ZZ Radial Deep Groove Ball Bearing Single Row Bore 55 Mm Outer Diameter 120 Mm Width 29 Mm Clearance 1 To 15 Micrometers Dynamic Load Rating Cr 74.1 kN Static Load Rating Cor 4

Sealed 6311ZZ Radial Deep Groove Ball Bearing (Single)
✔️ bore 55mm, outer 120mm, width 29mm; shielded, Cr 74.1kN

The 6311ZZ is a single-row deep groove ball bearing with metal shields, built for smooth, high-speed rotation and steady radial support in general machinery. It's commonly found in motors, gearboxes, conveyors, fans, and DIY equipment where reliable, low-friction movement is needed.

✅ Bore: 55 mm
✅ Outer diameter: 120 mm
✅ Width: 29 mm
✅ Shields: Metal shields (2Z) for dust protection
✅ Basic dynamic load rating Cr: 74.1 kN
✅ Basic static load rating Cor: 45 kN
✅ Lubrication: Grease lubrication from 6300 series

💡 What is a deep groove ball bearing and where is it used?

This handy bearing is a common choice for machines because it provides smooth rotation with low friction and handles radial loads well.

• High speed capability with low friction
• Used in motors, fans, conveyors, and gearboxes
• Metal shields protect against dust and moisture
• Standard metric bore sizes like 55 mm make replacement easy