What are the dimensions of this SKF needle roller bearing?

This bearing has an inside diameter of 40 mm, an outside diameter of 50 mm, and a width of 20 mm.

Does this bearing include an inner ring?

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

What material is the cage made of?

The TN suffix indicates that the cage is made of plastic (polyamide).

Is this SKF needle roller bearing sealed?

No, this needle roller bearing is an open design without integrated seals.

When should you use a needle roller bearing without an inner ring?

You use it for compact arrangements with high radial loads where the shaft serves as the raceway.

SKF NK 40/20 TN needle roller bearing without inner ring 40x50x20 mm

Supplier number: SKF NK 40/20 TN | EAN 7316572176054

Recommended Retail Price €72.60

35.80 tax incl.

€29.59 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 2 products in stock.

Delivery by DHL

↓ Documents (1) ✆ Talk to a specialist

Compact radial support for high loads

Practical benefits

Space saving design without ring: You mount this bearing directly onto a hardened shaft to achieve a compact and exceptionally stiff arrangement.
Smooth and quiet operation: The lightweight polyamide cage in the Skf NK 40/20 TN minimizes internal friction and running noise during operation.
Robust high load capacity: The machined outer ring with integral flanges provides you with superior radial guidance under heavy mechanical stress.

In a nutshell

The right choise for

With the Skf nk 40/20 tn needle roller bearing, you achieve a compact and rigid arrangement for demanding mechanical applications. Designed without an inner ring, this single-row bearing runs directly on a hardened and ground 40 mm shaft, saving critical radial space in gearboxes, transmissions, and pump drives. The machined outer ring with integral flanges provides dependable guidance and high radial load capacity, while the lightweight plastic cage reduces friction and operational noise. Choose this open 40X50X20 mm bearing solution whenever you need robust support and smooth rotation within tight installation spaces.

Product information FAQ

€35.80

In stock - tax incl.

Key features according to our expert

Inner diameter: 40 mm
Width: 20 mm
Sealing (bearing): Without seals
Material (bearing seal): Not applicable
Number of rows: 1
Material (cage): Plastic
Outer diameter: 50 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: 40 mm
Width: 20 mm
Sealing (bearing): Without seals
Material (bearing seal): Not applicable
Number of rows: 1
Material (cage): Plastic
Outer diameter: 50 mm
Basic static load rating: 60
Bearing part: Bearing without inner ring
Tolerance class: Normal
Aligning feature: Without
Reference speed: 10000
Bore diameter of needle roller complement: 40
Relubrication feature: With
Number of flanges, outer ring: 2
Lubricant: None
Cage: Non-metallic
Sealing: Without
Basic dynamic load rating: 29.7
Outer ring type: Machined (solid)
Limiting speed: 11000
Coating: Without
Outer diameter: 50
Material, bearing: Bearing steel

Brand SKF
01290196
EAN 7316572176054
Supplier number SKF NK 40/20 TN

Frequently asked questions about this product

Answered by specialists

What are the dimensions of this SKF needle roller bearing?: This bearing has an inside diameter of 40 mm, an outside diameter of 50 mm, and a width of 20 mm.
Does this bearing include an inner ring?: No, this model comes without an inner ring and runs directly on a hardened and ground shaft.
What material is the cage made of?: The TN suffix indicates that the cage is made of plastic (polyamide).
Is this SKF needle roller bearing sealed?: No, this needle roller bearing is an open design without integrated seals.
When should you use a needle roller bearing without an inner ring?: You use it for compact arrangements with high radial loads where the shaft serves as the raceway.