What are the exact dimensions of this SKF ball bearing?

The bearing has an inner diameter of 55 mm, an outer diameter of 120 mm, and a width of 29 mm.

What does the 2Z designation mean?

It indicates that the bearing features a metal shield on both sides to keep contaminants out.

What is the purpose of the C3 internal clearance?

The C3 clearance is larger than standard, accommodating thermal expansion caused by higher speeds and temperatures.

What type of bore does this deep groove ball bearing have?

It features a standard cylindrical bore of 55 mm for direct mounting onto the shaft.

Does this bearing require lubrication before installation?

No, bearings with 2Z metal shields are pre-greased at the factory and lubricated for life.

SKF 6311-2Z/C3 single-row groove ball bearing cylindrical 55x120x29 mm

Supplier number: SKF 6311-2Z/C3 | EAN 7316576682018

Recommended Retail Price €132.07

65.20 tax incl.

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

On stock - immediately available

Delivery by DHL

↓ Documents (1) ✆ Talk to a specialist

Smooth rotation with Skf bearings

Practical benefits

Double shielded contaminant protection: Metal shields on both sides retain lubricant and protect your application from dust ingress.
Greater C3 internal clearance: You run machines at higher speeds with adequate compensation for thermal expansion.
Reliable combined load support: Your machinery effortlessly handles radial and axial forces in both directions with minimal friction.

In a nutshell

The right choise for

Keep your rotating machinery operating smoothly with the Skf 6311-2Z/C3 single row deep groove ball bearing. Engineered from durable steel with dimensions of 55X120X29 mm and a standard cylindrical bore, it effortlessly handles combined radial and axial loads in both directions. The increased C3 internal clearance accommodates thermal expansion during higher operating speeds, preventing seizure in electric motors, pumps, and gearboxes. Featuring metal shields on both sides, this bearing retains its factory lubrication while keeping out dust and debris, providing a maintenance-free solution ready for direct installation.

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: 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 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: C3
Material (bearing): Steel
Material (cage): Brass (sheet)
Bore type: Cylindrical
High temperature: No
Outer diameter: 120 mm
Relubrication feature: Without
Radial internal clearance: C3
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
01010840
EAN 7316576682018
Supplier number SKF 6311-2Z/C3

Frequently asked questions about this product

Answered by specialists

What are the exact dimensions of this SKF ball bearing?: The bearing has an inner diameter of 55 mm, an outer diameter of 120 mm, and a width of 29 mm.
What does the 2Z designation mean?: It indicates that the bearing features a metal shield on both sides to keep contaminants out.
What is the purpose of the C3 internal clearance?: The C3 clearance is larger than standard, accommodating thermal expansion caused by higher speeds and temperatures.
What type of bore does this deep groove ball bearing have?: It features a standard cylindrical bore of 55 mm for direct mounting onto the shaft.
Does this bearing require lubrication before installation?: No, bearings with 2Z metal shields are pre-greased at the factory and lubricated for life.