What are the dimensions of this cylindrical roller bearing?

This bearing has an inside diameter of 45 mm, an outside diameter of 100 mm, and a width of 25 mm.

What does the C3 designation mean for this bearing?

C3 indicates greater radial internal clearance than standard, ideal for high speeds or thermal expansion.

What is the cage material of this bearing?

The P suffix in ECP signifies a glass-fibre reinforced polyamide (plastic) cage.

Can this bearing accommodate axial loads?

No, an NU design cylindrical roller bearing supports radial loads only and accommodates axial displacement in both directions.

Is this bearing sealed?

No, this is an open bearing without seals, designed for lubrication with oil or grease during installation.

SKF NU 309 ECP/C3 single-row cylindrical roller bearing 45 x 100 x 25 mm

Supplier number: SKF NU 309 ECP/C3 | EAN 7316577032232

Recommended Retail Price €209.96

103.80 tax incl.

€85.79 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 4 products in stock.

Ordered before 20:00 - delivered tomorrow 16/10/2026
Shipping costs €6.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL

↓ Documents (1) ✆ Talk to a specialist

Smooth rotation with Skf

Practical benefits

High radial load capacity: You handle heavy radial forces reliably thanks to the sturdy single-row cylindrical roller design.
Quick and easy mounting: The separable NU construction allows you to mount the inner and outer rings independently.
Extra thermal clearance: With internal C3 radial clearance, you prevent binding under elevated running temperatures and thermal expansion.

In a nutshell

The right choise for

With the Skf nu 309 ECP/C3 single-row cylindrical roller bearing, you ensure dependable performance under heavy radial loads and high running speeds. Thanks to the C3 radial internal clearance, you prevent unwanted bearing preloading caused by thermal shaft expansion in electric motors, pumps, and gearboxes. The nu design with a removable inner ring makes mounting and maintenance fast and straightforward, while easily accommodating axial displacement in both directions. Fitted with a lightweight, glass-fibre reinforced polyamide cage, it delivers smooth and low-friction rotation to keep your industrial machinery running reliably.

Product information FAQ

€103.80

In stock - tax incl.

Key features according to our expert

Inner diameter: 45 mm
Width: 25 mm
Number of rows: 1
Radial clearance: C3
Material (cage): Plastic
Sealing (bearing): Without seals
Material (bearing seal): Not applicable
Bore type: Cylindrical
Outer diameter: 100 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 no flanges on the inner ring, NU design bearings can accommodate axial displacement in both directions. 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
Accommodate axial displacement in both directions
Separable design

Documents

⤓ Technical data sheet PDF

All Features

Inner diameter: 45 mm
Width: 25 mm
Number of rows: 1
Radial clearance: C3
Material (cage): Plastic
Sealing (bearing): Without seals
Material (bearing seal): Not applicable
Bore type: Cylindrical
Outer diameter: 100 mm
Basic static load rating: 100
Tolerance class: Normal
Radial internal clearance: C3
Loose flange: None
Cage: Non-metallic
Relubrication feature: Without
Reference speed: 7500
Skf performance class: SKF Explorer
Lubricant: None
Locating feature, bearing outer ring: None
Bearing part: Complete bearing
Sealing: Without
Number of flanges, outer ring: 2
Limiting speed: 8500
Bore diameter: 45
Basic dynamic load rating: 112
Coating: Without
Outer diameter: 100
Axial displacement capability: In both directions

Brand SKF
01070509
EAN 7316577032232
Supplier number SKF NU 309 ECP/C3

Frequently asked questions about this product

Answered by specialists

What are the dimensions of this cylindrical roller bearing?: This bearing has an inside diameter of 45 mm, an outside diameter of 100 mm, and a width of 25 mm.
What does the C3 designation mean for this bearing?: C3 indicates greater radial internal clearance than standard, ideal for high speeds or thermal expansion.
What is the cage material of this bearing?: The P suffix in ECP signifies a glass-fibre reinforced polyamide (plastic) cage.
Can this bearing accommodate axial loads?: No, an NU design cylindrical roller bearing supports radial loads only and accommodates axial displacement in both directions.
Is this bearing sealed?: No, this is an open bearing without seals, designed for lubrication with oil or grease during installation.