What are the dimensions of this SKF cylindrical roller bearing?

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

How does the NU design handle axial displacement?

With two flanges on the outer ring and none on the inner ring, it accommodates axial movement in both directions.

Is this bearing sealed?

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

What internal radial clearance does this bearing have?

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

What material is the cage made from?

The cage of this bearing is made from stamped sheet steel (indicated by the J suffix).

SKF NU 309 ECJ single-row cylindrical roller bearing 45 x 100 x 25 mm

Supplier number: SKF NU 309 ECJ | EAN 7316577034878

Recommended Retail Price €275.75

136.40 tax incl.

€112.73 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 6 products in stock.

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

↓ Documents (1) ✆ Talk to a specialist

Robust performance by Skf

Practical benefits

High radial load support: You accommodate heavy radial forces reliably thanks to the optimized roller set geometry.
Quick and separable mounting: You install inner and outer rings independently, making assembly and maintenance straightforward in tight spaces.
Smooth low friction running: The sturdy pressed sheet cage guides rollers accurately to reduce friction and minimize heat buildup.

In a nutshell

The right choise for

With the Skf nu 309 ecj cylindrical roller bearing, you handle heavy radial loads reliably in electric motors, gearboxes, and industrial machinery. Featuring an nu design with no flanges on the inner ring, it smoothly accommodates axial displacement caused by thermal shaft expansion. Its separable construction allows you to mount and dismount inner and outer rings independently, making installation and routine maintenance straightforward. The sturdy cage guides the rollers precisely to minimize friction and heat buildup during continuous operation. Sized at 45 x 100 x 25 mm with standard normal radial clearance, this open single-row bearing delivers dependable support for demanding rotating equipment.

Product information FAQ

€136.40

In stock - tax incl.

Key features according to our expert

Inner diameter: 45 mm
Width: 25 mm
Number of rows: 1
Radial clearance: CN (Normal)
Material (cage): Brass (sheet)
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: CN (Normal)
Material (cage): Brass (sheet)
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: CN
Loose flange: None
Cage: Sheet metal
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
01070786
EAN 7316577034878
Supplier number SKF NU 309 ECJ

Frequently asked questions about this product

Answered by specialists

What are the dimensions of this SKF cylindrical roller bearing?: This bearing has a 45 mm bore diameter, 100 mm outside diameter, and a width of 25 mm.
How does the NU design handle axial displacement?: With two flanges on the outer ring and none on the inner ring, it accommodates axial movement in both directions.
Is this bearing sealed?: No, this is an open cylindrical roller bearing without built-in seals.
What internal radial clearance does this bearing have?: This bearing features standard normal radial internal clearance (CN).
What material is the cage made from?: The cage of this bearing is made from stamped sheet steel (indicated by the J suffix).