What are the dimensions of this SKF ball bearing?

The bearing has an inside diameter of 55 mm, an outside diameter of 120 mm, and a width of 29 mm.

What does the C3 designation mean for this bearing?

C3 indicates greater radial internal clearance than standard, accommodating thermal expansion at higher speeds.

Is this SKF bearing sealed or shielded?

No, this is an open bearing without seals or shields, suited for applications with external lubrication.

What type of bore does the SKF 6311/C3 have?

It features a cylindrical bore designed for direct mounting on a 55 mm diameter shaft.

What loads can this single row deep groove ball bearing accommodate?

It accommodates both radial loads and axial loads acting in either direction.

SKF 6311/C3 single-row groove ball bearing cylindrical 55x120x29 mm

Supplier number: SKF 6311/C3 | EAN 7316571366333

Recommended Retail Price €115.12

56.95 tax incl.

€47.07 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 8 products in stock.

Ordered before 20:00 - delivered tomorrow 17/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL

↓ Documents (1) ✆ Talk to a specialist

Smooth performance with Skf

Practical benefits

Built for high speeds: The C3 internal radial clearance easily accommodates thermal expansion during high-speed continuous operations.
Dual direction load support: The single-row deep groove design reliably supports both radial and axial loads in both directions.
Durable and low friction: Made of strong bearing steel without seals, it provides reduced rotational resistance and straightforward lubrication.

In a nutshell

The right choise for

Keep your industrial machinery and drive systems running smoothly with the Skf 6311/C3 single row deep groove ball bearing. Designed with C3 internal radial clearance, it easily accommodates shaft thermal expansion during high-speed operations in electric motors, gearboxes, and pumps. Its robust steel construction with a 55 mm cylindrical bore mounts directly onto the shaft, providing reliable support for both radial and axial loads in either direction. The open design without integral seals minimizes rotational friction and allows straightforward external lubrication with oil or grease, ensuring durable performance and dependable operation.

Product information FAQ

€56.95

In stock - tax incl.

Key features according to our expert

Inner diameter: 55 mm
Width: 29 mm
Number of rows: 1
Sealing (bearing): Without seals
Material (bearing seal): Not applicable
Radial clearance: C3
Material (bearing): Steel
Material (cage): Brass (sheet)
Bore type: Cylindrical
High temperature: No
Outer diameter: 120 mm

Product description

Single row deep groove ball bearings are particularly versatile, have low friction and are optimized for low noise and low vibration, which enables high rotational speeds. They accommodate radial and axial loads in both directions, are easy to mount, and require less maintenance than many other bearing types.

Simple, versatile and robust design
Low friction
High-speed capability
Accommodate radial and axial loads in both directions
Require little maintenance

Documents

⤓ Technical data sheet PDF

All Features

Inner diameter: 55 mm
Width: 29 mm
Number of rows: 1
Sealing (bearing): Without seals
Material (bearing seal): Not applicable
Radial clearance: C3
Material (bearing): Steel
Material (cage): Brass (sheet)
Bore type: Cylindrical
High temperature: No
Outer diameter: 120 mm
Matched arrangement: No
Tolerance class: Normal
Radial internal clearance: C3
Basic static load rating: 45
Material, bearing: Bearing steel
Relubrication feature: Without
Reference speed: 12000
Skf performance class: SKF Explorer
Lubricant: None
Cage: Sheet metal
Locating feature, bearing outer ring: None
Filling slots: Without
Coating: Without
Sealing: Without
Limiting speed: 8000
Bore diameter: 55
Basic dynamic load rating: 74.1
Outer diameter: 120

Brand SKF
01010516
EAN 7316571366333
Supplier number SKF 6311/C3

Frequently asked questions about this product

Answered by specialists

What are the dimensions of this SKF ball bearing?: The bearing has an inside diameter of 55 mm, an outside diameter of 120 mm, and a width of 29 mm.
What does the C3 designation mean for this bearing?: C3 indicates greater radial internal clearance than standard, accommodating thermal expansion at higher speeds.
Is this SKF bearing sealed or shielded?: No, this is an open bearing without seals or shields, suited for applications with external lubrication.
What type of bore does the SKF 6311/C3 have?: It features a cylindrical bore designed for direct mounting on a 55 mm diameter shaft.
What loads can this single row deep groove ball bearing accommodate?: It accommodates both radial loads and axial loads acting in either direction.