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 43 mm.

What does the designation K mean?

The letter K indicates a tapered bore (1:12 taper), designed for mounting with adapter or withdrawal sleeves.

What does the C3 clearance mean?

C3 denotes greater radial internal clearance than standard, accommodating thermal expansion and press fits.

Is this ball bearing sealed?

No, this is an open bearing without built-in seals.

What is the main benefit of a self-aligning ball bearing?

It accommodates angular misalignment and shaft deflections relative to the housing without increasing friction.

SKF 2311 K/C3 double-row self-aligning ball bearing tapered 55x120x43 mm

Supplier number: SKF 2311 K/C3 | EAN 7316576608773

Recommended Retail Price €513.29

253.95 tax incl.

€209.88 excl. VAT (incl. all environmental contributions)

On stock - immediately available

Ordered before 20:00 - delivered as of 13/10/2026
Free shipping
Delivery by DHL
Delivered from Belgium

↓ Documents (1) ✆ Talk to a specialist

Smooth rotation under heavy shaft deflection

Practical benefits

Dynamic compensation of misalignment: You effortlessly compensate for angular errors and shaft deflection thanks to the spherical outer ring raceway of this Skf bearing.
Easy tapered bore mounting: You achieve a fast, secure fit on plain or stepped shafts by using the tapered bore with a compatible adapter sleeve.
Heat-resistant internal C3 clearance: You ensure cool, friction-free running at high rotational speeds with the extra internal radial clearance of the C3 rating.

In a nutshell

The right choise for

With the Skf 2311 K/C3 double-row self-aligning ball bearing, you keep industrial machinery running smoothly even when dealing with shaft deflections or angular misalignment. Its spherical outer ring raceway effortlessly compensates for alignment errors, preventing unnecessary friction and premature wear. The tapered bore, with dimensions of 55X120X43 mm, enables secure and straightforward mounting on plain or stepped shafts using an adapter sleeve. In addition, the increased C3 radial internal clearance ensures low-friction rotation under elevated operating temperatures in demanding applications like industrial fans, pumps, and conveyor systems.

Product information FAQ

€253.95

In stock - tax incl.

Key features according to our expert

Inner diameter: 55 mm
Width: 43 mm
Number of rows: 2
Sealing (bearing): Without seals
Material (bearing seal): Not applicable
Radial clearance: C3
Material (cage): Brass (sheet)
Bore type: Tapered
Outer diameter: 120 mm

Product description

Self-aligning ball bearings, with a tapered bore, have two rows of balls, a common sphered raceway in the outer ring and two deep uninterrupted raceway grooves in the inner ring. They are insensitive to angular misalignment of the shaft relative to the housing, which can be caused, for example, by shaft deflection. The tapered bore facilitates ease of mounting via adapter sleeves or withdrawal sleeves.

Ease of mounting via adapter sleeves or withdrawal sleeves
Accommodate static and dynamic misalignment
Excellent high-speed performance
Excellent light load performance
Low friction

Documents

⤓ Technical data sheet PDF

All Features

Inner diameter: 55 mm
Width: 43 mm
Number of rows: 2
Sealing (bearing): Without seals
Material (bearing seal): Not applicable
Radial clearance: C3
Material (cage): Brass (sheet)
Bore type: Tapered
Outer diameter: 120 mm
Basic static load rating: 24
Tolerance class: Normal
Retaining feature, inner ring: None
Radial internal clearance: C3
Cage: Sheet metal
Relubrication feature: Without
Reference speed: 11000
Lubricant: None
Sealing: Without
Material, bearing: Bearing steel
Locating feature, bearing outer ring: None
Coating: Without
Limiting speed: 7500
Bore diameter: 55
Basic dynamic load rating: 76.1
Outer diameter: 120

Brand SKF
01030266
EAN 7316576608773
Supplier number SKF 2311 K/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 43 mm.
What does the designation K mean?: The letter K indicates a tapered bore (1:12 taper), designed for mounting with adapter or withdrawal sleeves.
What does the C3 clearance mean?: C3 denotes greater radial internal clearance than standard, accommodating thermal expansion and press fits.
Is this ball bearing sealed?: No, this is an open bearing without built-in seals.
What is the main benefit of a self-aligning ball bearing?: It accommodates angular misalignment and shaft deflections relative to the housing without increasing friction.