What are the dimensions of this needle roller bearing?

The bearing has an inside diameter of 55 mm, an outside diameter of 68 mm, and a width of 25 mm.

Does the SKF NK 55/25 include an inner ring?

No, this model is designed without an inner ring and runs directly on a hardened and ground shaft.

What cage material is used in this bearing?

This single row needle roller bearing features a sheet steel cage.

Is this needle roller bearing sealed?

No, this bearing has an open design without integrated seals.

Can this bearing be relubricated?

Yes, the machined outer ring features integral flanges and an annular groove with lubrication holes.

SKF NK 55/25 needle roller bearing without inner ring 55x68x25 mm

Supplier number: SKF NK 55/25 | EAN 7316577121523

Recommended Retail Price €176.66

86.80 tax incl.

€71.74 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 1 products in stock.

Delivery by DHL

↓ Documents (1) ✆ Talk to a specialist

Compact support for heavy radial loads

Practical benefits

Space saving ringless design: You mount the Skf needle roller bearing directly on the shaft for minimal cross-sectional height.
High radial load capacity: The machined outer ring and steel cage allow you to handle demanding radial forces reliably.
Simple relubrication in service: You maintain smooth operation easily using the built-in lubrication groove and holes.

In a nutshell

The right choise for

With the single row Skf nk 55/25 needle roller bearing, you achieve a compact, high-capacity bearing arrangement in tight radial spaces. Designed without an inner ring, this bearing mounts directly onto a hardened and ground 55 mm shaft to minimize overall height. The machined outer ring with integral flanges and the sheet steel cage reliably handle heavy radial loads in gearboxes and mechanical drives. Thanks to the built-in annular groove and lubrication holes, you can relubricate quickly during routine maintenance to keep your equipment running smoothly and dependably.

Product information FAQ

€86.80

In stock - tax incl.

Key features according to our expert

Inner diameter: 55 mm
Width: 25 mm
Sealing (bearing): Without seals
Material (bearing seal): Not applicable
Number of rows: 1
Material (cage): Sheet steel
Outer diameter: 68 mm

Product description

Single row needle roller bearings without an inner ring consist of an outer ring with a needle roller and cage assembly. They are an excellent choice for compact bearing arrangements in applications where hardened and ground raceways can be provided on the shaft. The outer ring includes two integral flanges to guide the bearing axially and an annular groove with one or more lubrication holes to facilitate relubrication.

High radial load carrying capacity
High stiffness
Low cross-sectional height
Accommodate axial displacement in both directions

Documents

⤓ Technical data sheet PDF

All Features

Inner diameter: 55 mm
Width: 25 mm
Sealing (bearing): Without seals
Material (bearing seal): Not applicable
Number of rows: 1
Material (cage): Sheet steel
Outer diameter: 68 mm
Bore diameter of needle roller complement: 55
Tolerance class: Normal
Aligning feature: Without
Basic static load rating: 85
Skf performance class: SKF Explorer
Relubrication feature: With
Reference speed: 7500
Sealing: Without
Lubricant: None
Cage: Sheet steel
Bearing part: Bearing without inner ring
Number of flanges, outer ring: 2
Outer ring type: Machined (solid)
Limiting speed: 8500
Basic dynamic load rating: 45
Coating: Without
Outer diameter: 68
Material, bearing: Bearing steel

Brand SKF
01290079
EAN 7316577121523
Supplier number SKF NK 55/25

Frequently asked questions about this product

Answered by specialists

What are the dimensions of this needle roller bearing?: The bearing has an inside diameter of 55 mm, an outside diameter of 68 mm, and a width of 25 mm.
Does the SKF NK 55/25 include an inner ring?: No, this model is designed without an inner ring and runs directly on a hardened and ground shaft.
What cage material is used in this bearing?: This single row needle roller bearing features a sheet steel cage.
Is this needle roller bearing sealed?: No, this bearing has an open design without integrated seals.
Can this bearing be relubricated?: Yes, the machined outer ring features integral flanges and an annular groove with lubrication holes.