SKF 3311 A double-row angular contact ball bearing 55 x 120 x 49.2 mm with contact angle 30°

Supplier number: SKF 3311 A | EAN 7316570216561

Recommended Retail Price €597.62

295.80 tax incl.

€244.46 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 3 products in stock.

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High rigidity with Skf bearings

Practical benefits

Handles combined dual-direction loads: You support heavy radial forces and bidirectional axial thrust smoothly in one compact unit.
Space-saving double-row construction: You require significantly less axial space than an equivalent pair of single-row bearings.
Smooth high-speed operation: Built with a 30° contact angle, you achieve stable rotation across demanding industrial machinery.

In a nutshell

The right choise for

With the Skf 3311 A, you achieve high rigidity and dependable performance in demanding rotating equipment. This double-row angular contact ball bearing accommodates heavy radial loads and bidirectional axial thrust simultaneously. Thanks to its 30° contact angle and compact dimensions of 55 x 120 x 49.2 mm, you save valuable axial space compared to paired single-row bearings. Its open design with normal internal clearance (CN) and a sturdy sheet metal cage ensures smooth, stable operation at high speeds across industrial gearboxes, pumps, and fans.

Product information FAQ

€295.80

In stock - tax incl.

Key features according to our expert

Inner diameter: 55 mm
Width: 49,2 mm
Number of rows: 2
Axial clearance: CN (Normal)
Sealing (bearing): Without seals
Material (bearing seal): Not applicable
Material (cage): Brass (sheet)
Outer diameter: 120 mm

Product description

Double row angular contact ball bearings correspond, in their design and operation, to a pair of single row angular contact ball bearings in a back-to-back arrangement, while requiring less axial space. They can operate at high speeds and are more suitable than deep groove ball bearings for supporting large axial forces in both directions.

High-speed capability
Accommodate relatively high radial loads, high axial loads in both directions and tilting moments
Suitable where a stiff bearing arrangement is required
Require less axial space than equivalent pair of single row angular contact ball bearings

Documents

⤓ Technical data sheet PDF

All Features

Inner diameter: 55 mm
Width: 49,2 mm
Number of rows: 2
Axial clearance: CN (Normal)
Sealing (bearing): Without seals
Material (bearing seal): Not applicable
Material (cage): Brass (sheet)
Outer diameter: 120 mm
Matched arrangement: No
Locating feature, bearing outer ring: None
Ring type: One-piece inner and outer rings
Contact type: Normal contact (two-point contact)
Basic static load rating: 81.5
Lubricant: None
Relubrication feature: Without
Reference speed: 6000
Skf performance class: SKF Explorer
Arrangement of contact angle (double-row bearing): Back-to-back (O)
Cage: Sheet metal
Material, bearing: Bearing steel
Sealing: Without
Bore diameter: 55
Axial internal clearance: CN
Contact angle: 30
Limiting speed: 5300
Basic dynamic load rating: 112
Coating: Without
Outside diameter: 120
Universal matching bearing: No

Brand SKF
01050032
EAN 7316570216561
Supplier number SKF 3311 A

Frequently asked questions about this product

Answered by specialists

What are the dimensions of this angular contact ball bearing?: The bearing has a 55 mm bore diameter, a 120 mm outside diameter, and a width of 49.2 mm.
What types of loads can this bearing accommodate?: With its double row design and 30° contact angle, it supports both radial loads and axial loads in both directions.
Does this bearing have integrated seals?: No, this model is an open type bearing without seals. It must be lubricated appropriately for your application.
What material is the cage made of?: This bearing features a sturdy sheet metal cage.
What does the CN clearance rating mean?: CN indicates normal internal clearance according to standard manufacturing specifications.