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 +1 (0) 419 830 2230 or email us on sales@bowmanbearingtech.com.
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 +1 (0) 419 830 2230 or email sales@bowmanbearingtech.com 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!
