Metric WMU® Bearing Strip

Part Number: WMUS 25240

Bowman WMU® PTFE lined bearing strip material rolls

Details

Length	500
Thickness	2.5
Width	245
Backing Material	Standard Steel

Material Specification

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

Tolerances & Fittings (Metric)

	Min	Max
Overall Length	500	503
Thickness Tolerance	2.46	2.5
Width Tolerance	245	255

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 at sales@bowman.co.uk.

What is PTFE lined bearing strip?

PTFE lined bearing strip is a composite self-lubricating bearing material used to manufacture custom bearing components. Bowman's WMU® bearing strip consists of a carbon steel backing, a porous sintered bronze layer, and a low-friction PTFE sliding surface, providing excellent wear resistance, low friction, and maintenance-free performance for a wide range of industrial applications.

What sizes of WMU® bearing strip are available?

Bowman supplies WMU® bearing strip in a range of metric and imperial sizes from stock to suit various engineering requirements. Bronze-backed versions are also available to order. If you need assistance selecting the correct dimensions, Bowman's technical team can recommend the most suitable option for your application.

Can I cut WMU® bearing strip to a custom size?

Yes. WMU® bearing strip can be cut, formed, and machined into bespoke components to meet specific design requirements. Bowman also offers an in-house machining service to manufacture custom-sized bushings, thrust washers, wear plates, guide strips, and other bearing components from the material.

How do I use bearing strip to make a bushing?

Bearing strip is cut to the required dimensions, formed into a cylindrical shape, and installed into a housing to create a custom bushing. This approach allows engineers to manufacture non-standard bearing sizes where off-the-shelf products are unavailable, making WMU® bearing strip ideal for OEM production, repairs, and replacement components.

What temperatures can WMU® bearing strip handle?

WMU® PTFE lined bearing strip is designed to operate across a wide temperature range typical of PTFE-lined composite bearing materials. The exact operating temperature depends on the application, load, speed, and operating environment. Bowman can provide detailed temperature limits and technical guidance to ensure the material is suitable for your specific 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!

Bowman International Group

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