What are the dimensions of this bearing?

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

What does the C4 clearance rating mean?

C4 indicates a radial internal clearance greater than standard and C3, suited for high operating temperatures or tight interference fits.

Can this bearing accommodate axial loads?

Yes, thanks to the NJ design with two flanges on the outer ring and one on the inner ring, it can locate the shaft axially in one direction.

What material is the cage made of?

The ECP designation indicates a reinforced polyamide (engineered plastic) cage.

Does this cylindrical roller bearing have integrated seals?

No, this is an open bearing without seals, intended for oil or grease lubrication within an enclosed housing.

SKF NJ 311 ECP/C4 single-row cylindrical roller bearing 55 x 120 x 29 mm

Supplier number: SKF NJ 311 ECP/C4 | EAN 7316577652058

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 17/10/2026
Free shipping
Delivery by DHL
Delivered from Belgium

↓ Documents (1) ✆ Talk to a specialist

Heavy load support with Skf bearings

Practical benefits

High radial load capacity: You handle heavy radial loads effortlessly thanks to the robust single row cylindrical roller configuration.
Reliable thermal expansion handling: The C4 radial internal clearance ensures you maintain smooth operation even under significant heat and thermal growth.
Quick and easy mounting: With the separable NJ design, you install and dismount the inner and outer rings independently with ease.

In a nutshell

The right choise for

With the Skf nj 311 ECP/C4 single row cylindrical roller bearing, you achieve outstanding reliability under heavy radial loads and high operating speeds. Thanks to the increased C4 radial internal clearance, your equipment runs smoothly even during significant thermal shaft expansion in heavy-duty electric motors, gearboxes, or pumps. The glass fibre reinforced polyamide cage minimizes friction and operating noise. Featuring the nj design with two outer ring flanges and one inner ring flange, it securely locates the shaft axially in one direction. Its separable design with dimensions of 55 x 120 x 29 mm ensures fast, hassle-free mounting and maintenance.

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: C4
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: C4
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: C4
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
01070975
EAN 7316577652058
Supplier number SKF NJ 311 ECP/C4

Frequently asked questions about this product

Answered by specialists

What are the dimensions of this bearing?: The bearing has a 55 mm bore diameter, a 120 mm outside diameter, and a 29 mm width.
What does the C4 clearance rating mean?: C4 indicates a radial internal clearance greater than standard and C3, suited for high operating temperatures or tight interference fits.
Can this bearing accommodate axial loads?: Yes, thanks to the NJ design with two flanges on the outer ring and one on the inner ring, it can locate the shaft axially in one direction.
What material is the cage made of?: The ECP designation indicates a reinforced polyamide (engineered plastic) cage.
Does this cylindrical roller bearing have integrated seals?: No, this is an open bearing without seals, intended for oil or grease lubrication within an enclosed housing.