NU 208 DKF 40x80x18 single row cylindrical roller bearing

Main description

The NU 208 DKF cylindrical roller bearing with dimensions 40x80x18 mm is a single row bearing designed for applications requiring high radial load capacity, low friction and the ability to accommodate axial displacement caused by thermal expansion.

A cylindrical roller bearing of the NU type is one of the most widely used designs in industrial machinery where radial loads dominate and shaft movement must be compensated. The NU configuration allows free axial movement between the inner and outer rings, making it ideal for systems exposed to temperature variations and dynamic operating conditions.

The NU 208 DKF version equipped with a polyamide cage offers reduced weight, smoother operation and improved performance at higher speeds compared to steel cage variants. This makes it particularly suitable for modern machinery where efficiency and noise reduction are important.

Construction and design

The DKF NU 208 is a single row cylindrical roller bearing with two flanges on the outer ring and no flanges on the inner ring.

This design allows the inner ring to move axially relative to the outer ring, effectively compensating for shaft expansion without generating additional internal stress. The cylindrical rollers provide line contact with the raceways, ensuring high radial load capacity and stable operation.

The polyamide cage guides the rollers with reduced friction, improving efficiency and supporting high speed performance while maintaining low noise levels.

Industrial applications

This cylindrical roller bearing is widely used in industrial systems where axial displacement and high radial loads are present.

Typical applications include:
electric motors and drive systems
gearboxes and transmission units
pumps and compressors
industrial machinery and production equipment
conveyor systems

Within the cylindrical roller bearing category, the NU 208 DKF is a standard solution for medium size industrial applications.

Technical parameters

Inner diameter: 40 mm
Outer diameter: 80 mm
Width: 18 mm
Type: cylindrical roller bearing
Design: NU single row
Cage: polyamide
Brand: DKF

Operational advantages

high radial load capacity
ability to accommodate axial displacement
low friction and smooth operation
lightweight polyamide cage
suitable for high speed applications
reliable performance in industrial systems

FAQ

What type of bearing is NU 208 DKF?
It is a single row cylindrical roller bearing.

Does it support axial loads?
It mainly supports radial loads and allows axial movement.

What is the benefit of a polyamide cage?
It reduces weight, friction and noise while improving high speed performance.

Where is this bearing typically used?
In motors, gearboxes and industrial machinery.