What are the dimensions of this SKF cylindrical roller bearing?

This bearing has a 40 mm bore diameter, a 90 mm outside diameter, and a width of 33 mm.

What does the C4 clearance mean for this bearing?

The C4 designation indicates that the bearing has greater internal radial clearance than standard or C3.

Can this bearing accommodate axial loads?

Yes, thanks to the NJ design with flanges, it can accommodate axial displacement in one direction.

What cage material is used in the NJ 2308 ECP/C4?

The ECP version features a glass-fibre reinforced polyamide plastic cage.

Does this SKF cylindrical roller bearing have seals?

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

SKF NJ 2308 ECP/C4 single-row cylindrical roller bearing 40 x 90 x 33 mm

Supplier number: SKF NJ 2308 ECP/C4 | EAN 7316577732712

Recommended Retail Price €318.98

157.80 tax incl.

€130.41 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

Dependable performance for high loads

Practical benefits

High radial load capacity: You manage heavy radial loads easily during demanding operations with this Skf cylindrical roller bearing.
Effortless mounting and maintenance: You install and inspect individual rings quickly thanks to the separable component design.
Increased thermal clearance: With the generous C4 internal clearance, you prevent binding under elevated operating temperatures or high speeds.

In a nutshell

The right choise for

With the Skf nj 2308 ECP/C4 single-row cylindrical roller bearing, you achieve dependable and robust shaft support for heavy-duty industrial machinery. Measuring 40 x 90 x 33 mm, this open bearing effortlessly handles high radial loads and speeds, while the nj design provides reliable axial location in one direction. The increased C4 internal radial clearance prevents bearing binding under high temperatures and thermal shaft expansion in electric motors, gearboxes, and pumps. Featuring a lightweight glass-fibre reinforced polyamide cage and a separable ring design, it ensures quick mounting, smooth inspection, and hassle-free maintenance.

Product information FAQ

€157.80

In stock - tax incl.

Key features according to our expert

Inner diameter: 40 mm
Width: 33 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: 90 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: 40 mm
Width: 33 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: 90 mm
Relubrication feature: Without
Tolerance class: Normal
Radial internal clearance: C4
Loose flange: None
Basic static load rating: 120
Cage: Non-metallic
Reference speed: 8000
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: 9500
Bore diameter: 40
Basic dynamic load rating: 129
Coating: Without
Outer diameter: 90
Axial displacement capability: In one direction

Brand SKF
01070930
EAN 7316577732712
Supplier number SKF NJ 2308 ECP/C4

Frequently asked questions about this product

Answered by specialists

What are the dimensions of this SKF cylindrical roller bearing?: This bearing has a 40 mm bore diameter, a 90 mm outside diameter, and a width of 33 mm.
What does the C4 clearance mean for this bearing?: The C4 designation indicates that the bearing has greater internal radial clearance than standard or C3.
Can this bearing accommodate axial loads?: Yes, thanks to the NJ design with flanges, it can accommodate axial displacement in one direction.
What cage material is used in the NJ 2308 ECP/C4?: The ECP version features a glass-fibre reinforced polyamide plastic cage.
Does this SKF cylindrical roller bearing have seals?: No, this model is an open bearing without built-in seals.