What are the dimensions of this ball bearing?

The SKF 6311-2Z bearing has an inside diameter of 55 mm, an outside diameter of 120 mm, and a width of 29 mm.

What type of shielding does this bearing have?

It features pressed metal shields on both sides (2Z), keeping grease inside and protecting against contamination.

What is the internal clearance of this bearing?

This bearing has a standard normal radial internal clearance (CN).

What loads can this bearing accommodate?

This single row deep groove ball bearing accommodates both radial and axial loads in both directions.

Does this bearing require lubrication before installation?

No, it is pre-lubricated with high-grade grease at the factory for maintenance-free operation.

SKF 6311-2Z single-row groove ball bearing cylindrical 55x120x29 mm

Supplier number: SKF 6311-2Z | EAN 7316570204612

Recommended Retail Price €132.07

65.20 tax incl.

€53.88 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 4 products in stock.

Ordered before 20:00 - delivered tomorrow 22/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL
Delivered from Belgium

↓ Documents (1) ✆ Talk to a specialist

Dependable rotation from Skf

Practical benefits

Dual shield debris protection: Metal shields on both sides retain lubricant and block contaminants, giving you extended service life in demanding machinery.
Two directional load handling: Deep raceway grooves allow you to smoothly support radial and axial loads occurring in both directions.
Robust cylindrical steel design: Precision steel components ensure you achieve low friction, stable alignment, and quiet continuous operation.

In a nutshell

The right choise for

With the Skf 6311-2Z single row deep groove ball bearing, you ensure smooth and reliable rotation across industrial machinery. Featuring dimensions of 55X120X29 mm and a cylindrical bore, it fits 55 mm shafts in electric motors, pumps, industrial fans, and gearboxes. The deep raceway design accommodates radial and axial loads in both directions. Dual metal shields (2Z) protect the factory grease and keep dust and dirt out without adding frictional drag. This durable steel bearing delivers quiet, low-friction operation and extended service life without requiring maintenance.

Product information FAQ

€65.20

In stock - tax incl.

Key features according to our expert

Inner diameter: 55 mm
Width: 29 mm
Number of rows: 1
Sealing (bearing): Sealed on both sides
Material (bearing seal): Metal
Radial clearance: CN (Normal)
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 with seals or shields 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. The integral sealing can significantly prolong bearing service life because it keeps lubricant in the bearings and contaminants out.

Integral sealing prolongs bearing service life
Simple, versatile and robust design
Low friction and 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): Sealed on both sides
Material (bearing seal): Metal
Radial clearance: CN (Normal)
Material (bearing): Steel
Material (cage): Brass (sheet)
Bore type: Cylindrical
High temperature: No
Outer diameter: 120 mm
Relubrication feature: Without
Radial internal clearance: CN
Basic static load rating: 45
Matched arrangement: No
Material, bearing: Bearing steel
Reference speed: 12000
Skf performance class: SKF Explorer
Lubricant: Grease
Sealing type: Non-contact
Cage: Sheet metal
Filling slots: Without
Tolerance class: Normal
Basic dynamic load rating: 74.1
Locating feature, bearing outer ring: None
Sealing: Shield on both sides
Limiting speed: 6300
Bore diameter: 55
Coating: Without
Outer diameter: 120

Brand SKF
01010343
EAN 7316570204612
Supplier number SKF 6311-2Z

Frequently asked questions about this product

Answered by specialists

What are the dimensions of this ball bearing?: The SKF 6311-2Z bearing has an inside diameter of 55 mm, an outside diameter of 120 mm, and a width of 29 mm.
What type of shielding does this bearing have?: It features pressed metal shields on both sides (2Z), keeping grease inside and protecting against contamination.
What is the internal clearance of this bearing?: This bearing has a standard normal radial internal clearance (CN).
What loads can this bearing accommodate?: This single row deep groove ball bearing accommodates both radial and axial loads in both directions.
Does this bearing require lubrication before installation?: No, it is pre-lubricated with high-grade grease at the factory for maintenance-free operation.