NA 4911 V P6 DKF 55x80x25 needle roller bearing

Main description

The NA 4911 V P6 DKF needle roller bearing with dimensions 55x80x25 mm is a high performance rolling bearing designed for applications requiring very high radial load capacity combined with compact dimensions and high rigidity.

A needle roller bearing is a type of bearing that uses long, thin cylindrical rollers instead of balls, allowing it to carry significantly higher loads in a smaller installation space. The NA 4911 series belongs to the category of needle roller bearings with an inner ring, making it suitable for use on standard shafts without the need for special hardening or grinding.

The V design and P6 precision class ensure improved dimensional accuracy, stable operation and consistent performance in demanding industrial environments. This makes the bearing suitable for high load applications where reliability and durability are critical.

Construction and design

The DKF NA 4911 V P6 is a single row needle roller bearing equipped with a machined outer ring, an inner ring and a cage guiding the needle rollers.

The needle rollers provide a large contact surface with the raceways, which results in very high load carrying capacity. The presence of the inner ring allows operation on shafts that do not meet bearing raceway requirements.

The V variant indicates a specific structural configuration optimized for dynamic operation, while the P6 precision class improves running accuracy and reduces vibration.

Industrial applications

This needle roller bearing is widely used in applications where high load capacity and compact design are essential.

Typical applications include:
gearboxes and transmission systems
industrial drive units
conveyor systems and material handling
agricultural and construction machinery
heavy duty mechanical assemblies

Within the needle roller bearing category, the NA 4911 V P6 DKF is a reliable solution for high load industrial applications.

Technical parameters

Inner diameter: 55 mm
Outer diameter: 80 mm
Width: 25 mm
Type: needle roller bearing
Series: NA 4911
Design: V
Precision: P6
Brand: DKF

Operational advantages

very high radial load capacity
compact design for limited space
high rigidity under load
suitable for standard shaft applications
improved accuracy with P6 class
reliable performance in demanding conditions

FAQ

What type of bearing is NA 4911 V P6 DKF?
It is a needle roller bearing with an inner ring.

What is the advantage of needle roller bearings?
They offer high load capacity in a compact design.

What does P6 mean?
It indicates increased precision and better running accuracy.

Where is this bearing typically used?
In gearboxes, industrial machines and heavy duty applications.