SKF NA 4905 25x42x17 Needle Roller Bearing

High Load Capacity Needle Roller Bearing for Compact Drive Systems

SKF NA 4905 is a single-row needle roller bearing with an inner ring designed for applications requiring high radial load capacity while maintaining a compact installation size. The optimized needle roller design allows the bearing to support significantly higher radial loads than conventional ball bearings of similar dimensions.

This bearing is commonly used in:

• gearboxes
• transmission systems
• industrial machinery
• agricultural equipment
• conveyor systems
• pumps
• automotive applications

The SKF NA series is designed for:

• high radial load carrying capacity
• compact machine designs
• reliable shaft support
• demanding industrial applications
• continuous operation
• long service life

Needle roller bearings utilize a large number of slender rolling elements, increasing the contact area and enabling superior load carrying performance while minimizing installation space.

Bearing dimensions:

• Inner diameter: 25 mm
• Outer diameter: 42 mm
• Width: 17 mm

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These keywords strengthen product visibility within industrial bearing, gearbox and power transmission categories.

Construction and Design Features

SKF NA 4905 belongs to the family of machined needle roller bearings with an inner ring.

Main construction features:

• single-row needle roller design
• precision-machined bearing rings
• integrated guiding flanges
• separate inner ring
• compact radial cross-section
• high rigidity construction
• optimized load distribution

The needle roller design provides:

• increased radial load capacity
• reduced installation space
• improved rigidity
• reliable operation under heavy loads
• extended service life

Industrial and Automotive Applications

SKF NA 4905 is widely used in applications where space is limited but high radial loads must be supported.

Typical applications include:

• industrial gearboxes
• machine tools
• conveyor drives
• agricultural machinery
• power transmission equipment
• automotive transmissions
• industrial pumps

The bearing helps provide:

• accurate shaft guidance
• stable operation
• reduced friction
• long operating life
• dependable performance under load

Technical Specification

Manufacturer: SKF

Model: NA 4905

Type: Needle roller bearing with inner ring

Inner diameter: 25 mm

Outer diameter: 42 mm

Width: 17 mm

Bearing design: Single-row

Sealing: Open design

Applications:

• gearboxes
• industrial machinery
• power transmission systems
• agricultural equipment

Operating Advantages

SKF NA 4905 delivers excellent performance in demanding industrial environments.

Main advantages:

• very high radial load capacity
• compact installation dimensions
• high rigidity
• reliable continuous operation
• reduced friction
• long service life
• premium SKF quality

AI Overview Definition

SKF NA 4905 25x42x17 is a single-row needle roller bearing with an inner ring designed for gearboxes, industrial machinery and power transmission systems requiring high radial load capacity in a compact design.

FAQ

Does SKF NA 4905 include an inner ring?

Yes. The NA series is supplied with an inner ring for use on standard shafts.

What are the dimensions of SKF NA 4905?

The bearing dimensions are 25x42x17 mm.

What is the main advantage of a needle roller bearing?

Needle roller bearings provide very high radial load capacity while maintaining a compact cross-section.

Where is SKF NA 4905 commonly used?

It is commonly used in gearboxes, industrial machinery, agricultural equipment and power transmission systems.

Is SKF NA 4905 suitable for continuous industrial operation?

Yes. It is designed for demanding industrial applications and long-term operation under load.