BOWMAN'S WMU® PTFE LINED BEARINGS: HIGH-PERFORMANCE, DRY-RUNNING APPLICATIONS
Bowman’s WMU® range of PTFE lined wrapped bearings is designed for high-performance, dry-running applications requiring low friction and minimal wear. With excellent sliding characteristics, these bearings form a protective transfer film on the mating surface, enhancing durability. Available in a variety of sizes and configurations including custom options they are ideal for demanding industries such as automotive, hydraulics, and precision engineering. In addition to the standard steel-backed, PTFE lined wrapped bearings we also offer our WMU-B and WMU-SS range with a bronze or stainless-steel backing strip for applications where the standard steel is not suitable.
The Key Strengths of the WMU® Bearings
Low Friction Power
Designed with advanced low-friction properties to reduce energy loss and enhance efficiency.
Durable Sliding Action
Provides smooth, consistent sliding motion with minimal wear for extended reliability.
Customisable Backing Materials
Offers a range of backing materials to meet diverse load, speed, and environmental demands.
Exceptional Load Capacity
Engineered to support high radial and axial loads without compromising performance.
Corrosion-Resistant Coating
Equipped with a protective coating to resist rust, chemicals, and harsh environments.
Long-lasting Performance
Combines robust construction and superior materials to ensure extended operational life.
WMU® PTFE Lined Specifications
| Structure | S.A.E. 1010 steel backing strip with sintered bronze and PTFE layers |
|---|---|
| Max PV – Dry (N/mm² x m/s) | 1.8 |
| Max PV – Oiled (N/mm² x m/s) | 2.8 |
| Max Static load (N/mm²) | 250 |
| Max Dynamic load (N/mm²) | 140 |
| Max Sliding speed – Dry (m/s) | 2.5 |
| Max Sliding speed – With Oil (m/s) | 5 |
| Operating temperature (°C) | -200 to 280 |
| Thermal Conductivity (W/mk) | 42 |
| Coefficient of friction – Dry | 0.02 to 0.20 |
| Coefficient of friction – With Oil | 0.02 to 0.15 |
| Recommended shaft finish (Ra) | 0.04 max (N5) |
| Recommended shaft hardness (HB) | 200 min |
Discover the Wrapped PTFE Lined Series
Frequently Asked Questions
If the answer to your question is not listed below, please feel free to give us a call directly on +44 (0)1235 462500 or email us on sales@bowman.co.uk.
What are WMU® PTFE lined wrapped bearings?
They are high-duty bearings with a PTFE lining that offers low friction, reduced wear, and excellent sliding properties for dry-running applications.
Which applications are WMU® PTFE lined bearings suitable for?
These bearings are commonly used in automotive suspension struts, shock absorbers, hydraulic systems, gear pumps, and axial/radial piston pumps.
Which type of materials are used in WMU® bearings?
They feature a PTFE polymer lining, sintered bronze for thermal conductivity, and a steel backing for load capacity. Copper/tin plating provides additional corrosion resistance.
How do I choose the right WMU® bearing for my project?
Contact our team at +44 (0)1235 462500 or email sales@bowman.co.uk for expert guidance on selecting the ideal bearing for your application.
Looking for a custom size or special specifications?
Whether you need standard or custom options, we’re here to help. Reach out now and let’s find the perfect match!
