6311-RS1 SKF Bearing Radial Ball Bearing 55 mm Bore Cylindrical With Normal Clearance Sheet Metal Cage Industrial Grade Bearing Steel No Coating High Load 74.1 KN Dynamic 45 KN Static

6311-RS1 SKF sealed radial ball bearing, 55 mm bore
✔️ 55 mm bore; cylindrical; CN clearance; sheet metal cage; steel

Introducing the SKF 6311-RS1 radial ball bearing, a single-row unit built for demanding industrial equipment. This bearing handles high radial loads with a standard clearance and a sheet metal cage, making it a reliable choice for machinery like conveyors and motors. Use cases include gear drives, fans, and other heavy-load assemblies where smooth rotation and long life matter.

Dimension	Metric	Imperial
Bore	55 mm	2.165 in
Outer Diameter	120 mm	4.724 in
Width	29 mm	1.142 in

✅ Basic dynamic load rating: 74.1 kN
✅ Basic static load rating: 45 kN
✅ Bearing material: Bearing steel
✅ Outer diameter: 120 mm (4.724 in)
✅ Bore diameter: 55 mm
✅ Cage: Sheet metal
✅ Clearance: Normal
✅ Sealing: Contact seal on one side
✅ Lubricant: None
✅ Pack size: Single bearing
✅ SKF Explorer performance class

💡 What is a sealed radial ball bearing used for in industrial equipment?

Here's a handy intro to help you decide.

- Handy for high-load, low-maintenance setups - Common in conveyors, motors, and gear drives with radial loads - One-side contact seal protects the interior while keeping servicing simple - Match bore and outer diameter to your housing and shaft