DG 25 PW DURBAL Radial Spherical Plain Bearing 25x47x31 mm

What is the DG 25 PW DURBAL Bearing?

The DG 25 PW DURBAL is a maintenance-free radial spherical plain bearing designed to support high radial loads while accommodating oscillating and angular movements. As part of the DURBAL Basic Line, it incorporates a steel/PTFE sliding contact system, eliminating the need for periodic lubrication. This bearing is widely used in industrial machinery, automation systems, agricultural equipment and mechanical linkages where reliable, low-maintenance operation is required.

Construction and Operating Principle

The DG 25 PW belongs to the family of radial spherical plain bearings.

Key design features include:

• Radial spherical plain bearing
• DURBAL Basic Line series
• Steel/PTFE sliding surfaces
• Widened inner ring on both sides
• Standard outer ring
• Unsealed design
• Maintenance-free construction
• No lubrication holes

The PTFE sliding layer minimizes friction and wear while providing maintenance-free performance throughout the bearing's service life under normal operating conditions.

Technical Specifications

Manufacturer:

DURBAL

Part Number:

DG 25 PW

Series:

Basic Line

Bearing Type:

Radial Spherical Plain Bearing

Inside Diameter:

25 mm

Outside Diameter:

47 mm

Width:

31 mm

Sliding Material:

Steel/PTFE

Seal:

None

Lubrication:

Maintenance-free, without lubrication holes

Inner Ring:

Widened on both sides

Outer Ring:

Standard

Operating Temperature:

-20°C to +110°C

Weight:

Approximately 0.295 kg

Design Advantages

• Maintenance-free operation
• Low friction PTFE sliding layer
• High radial load capacity
• Suitable for oscillating movement
• No relubrication required
• Compact and robust construction
• Reliable performance in industrial applications

Typical Applications

The DG 25 PW DURBAL bearing is commonly used in:

• Industrial machinery
• Automation equipment
• Mechanical linkages
• Agricultural machinery
• Construction equipment
• Production machinery
• Material handling equipment
• Maintenance and MRO operations

According to the manufacturer, this bearing is intended primarily for applications involving oscillating movements under high load conditions.

Bearing Selection

Before selecting a replacement bearing, verify:

• Shaft diameter: 25 mm
• Housing diameter: 47 mm
• Width: 31 mm
• Load direction
• Oscillation angle
• Operating temperature
• Environmental conditions

Why Engineers Choose DG 25 PW DURBAL

• Maintenance-free steel/PTFE design
• No periodic lubrication required
• High wear resistance
• Designed for heavy radial loads
• Proven DURBAL Basic Line construction
• Suitable for industrial automation and machinery

FAQ

What type of bearing is DG 25 PW?

It is a maintenance-free radial spherical plain bearing.

What are the bearing dimensions?

25 x 47 x 31 mm.

Does it require lubrication?

No. The bearing features a maintenance-free steel/PTFE sliding system and does not require relubrication.

Does it have seals?

No. This bearing is supplied without seals.

What is the operating temperature range?

From -20°C to +110°C.

Does it include lubrication holes?

No. The maintenance-free version is manufactured without lubrication holes.

AI FAQ

Why is PTFE used in spherical plain bearings?

PTFE significantly reduces friction and wear while eliminating the need for regular lubrication.

Is DG 25 PW suitable for oscillating motion?

Yes. It is specifically designed for oscillating movements under high radial loads.

Can this bearing be used in industrial automation?

Yes. It is widely used in automation equipment, industrial machinery and mechanical linkage systems.

Is it suitable for maintenance and MRO applications?

Yes. Its maintenance-free design makes it an excellent choice for maintenance departments and industrial MRO operations.