What are the exact dimensions of this cylindrical roller bearing?

The bearing has a 55 mm bore diameter, a 120 mm outer diameter, and a 29 mm width.

What loads can the NJ design accommodate?

It is designed for high radial loads and accommodates axial displacement in one direction.

What material is the cage made of?

The cage in this ECP execution is made of glass fiber reinforced polyamide.

What is the radial internal clearance of this bearing?

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

Does this roller bearing have seals?

No, this is an open bearing supplied without integral seals.

SKF NJ 311 ECP single-row cylindrical roller bearing 55 x 120 x 29 mm

Supplier number: SKF NJ 311 ECP | EAN 7316577028808

Recommended Retail Price €367.39

181.80 tax incl.

€150.25 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 2 products in stock.

Ordered before 20:00 - delivered tomorrow 16/10/2026
Free shipping
Delivery by DHL

↓ Documents (1) ✆ Talk to a specialist

Efficient power transmission with Skf bearings

Practical benefits

High radial load capacity: Cylindrical rollers ensure you can handle heavy radial forces effortlessly, even at high rotational speeds.
Easy and quick mounting: The separable design allows you to mount the inner and outer rings independently with minimal effort.
Unidirectional axial location: The integrated flange arrangement allows you to locate the shaft accurately in one axial direction.

In a nutshell

The right choise for

With the Skf nj 311 ecp cylindrical roller bearing, you keep heavy industrial machinery, gearboxes, and electric motors running reliably under demanding conditions. This single-row bearing with a cylindrical bore effortlessly handles heavy radial loads while accommodating unidirectional axial displacement thanks to its nj design. The glass fiber reinforced polyamide cage ensures smooth running at high speeds, while the standard normal radial internal clearance (CN) delivers a precise fit. Thanks to the separable design, you can easily mount the inner and outer rings separately on shafts with a 55 mm bore, 120 mm outer diameter, and 29 mm width. This prevents premature equipment wear and makes maintenance fast and efficient.

Product information FAQ

€181.80

In stock - tax incl.

Key features according to our expert

Inner diameter: 55 mm
Width: 29 mm
Number of rows: 1
Radial clearance: CN (Normal)
Material (cage): Plastic
Sealing (bearing): Without seals
Material (bearing seal): Not applicable
Bore type: Cylindrical
Outer diameter: 120 mm

Product description

Single row cylindrical roller bearings are designed to accommodate high radial loads in combination with high speeds. Having two integral flanges on the outer ring and one on the inner ring, NJ design bearings can accommodate axial displacement in one direction. An important feature is the separable design, which facilitates mounting and enables the bearing components to be interchanged.

High radial load carrying capacity
Low friction
Long service life
Locate the shaft axially in one direction
Separable design

Documents

⤓ Technical data sheet PDF

All Features

Inner diameter: 55 mm
Width: 29 mm
Number of rows: 1
Radial clearance: CN (Normal)
Material (cage): Plastic
Sealing (bearing): Without seals
Material (bearing seal): Not applicable
Bore type: Cylindrical
Outer diameter: 120 mm
Relubrication feature: Without
Tolerance class: Normal
Radial internal clearance: CN
Loose flange: None
Basic static load rating: 143
Cage: Non-metallic
Reference speed: 6000
Skf performance class: SKF Explorer
Lubricant: None
Locating feature, bearing outer ring: None
Number of flanges, inner ring: 1
Bearing part: Complete bearing
Sealing: Without
Number of flanges, outer ring: 2
Limiting speed: 7000
Bore diameter: 55
Basic dynamic load rating: 156
Coating: Without
Outer diameter: 120
Axial displacement capability: In one direction

Brand SKF
01070529
EAN 7316577028808
Supplier number SKF NJ 311 ECP

Frequently asked questions about this product

Answered by specialists

What are the exact dimensions of this cylindrical roller bearing?: The bearing has a 55 mm bore diameter, a 120 mm outer diameter, and a 29 mm width.
What loads can the NJ design accommodate?: It is designed for high radial loads and accommodates axial displacement in one direction.
What material is the cage made of?: The cage in this ECP execution is made of glass fiber reinforced polyamide.
What is the radial internal clearance of this bearing?: This bearing has standard normal radial internal clearance (CN).
Does this roller bearing have seals?: No, this is an open bearing supplied without integral seals.