Details
| Inner Diameter | 35 |
| Outer Diameter | 39 |
| Length | 16 |
| Backing Material | Standard Steel |
| Flange Thickness | 2 |
| Flange Diameter | 47 |
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 | Tolerance | |
|---|---|---|---|
| Flange Diameter Tolerance | 46.5 | 47.5 | - |
| Inside Diameter When Fitted | 34.99 | 35.085 | - |
| Recommended Housing Size | 39 | 39.025 | H7 |
| Overall Length | 15.75 | 16.25 | - |
| Shaft Diameter | 34.95 | 34.975 | - |
| Inside Chamfers | 0.1 | 0.7 | - |
| Outside Chamfers | 0.8 | 1.6 | - |
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 a PTFE lined flanged bearing?
A PTFE lined flanged bearing is a self-lubricating plain bearing that combines a cylindrical bearing surface with an integrated flange. The cylindrical section supports radial loads, while the flange absorbs axial loads, providing low-friction, maintenance-free performance in a single compact component.
When should I use a flanged bearing instead of a plain one?
A flanged bearing is recommended when your application experiences both radial and axial loads or when precise axial positioning of the shaft is required. The integrated flange helps locate the bearing within the housing and can eliminate the need for a separate thrust washer, simplifying assembly and reducing the number of components.
What sizes of WMU® flanged bearings are available?
Bowman supplies WMU® flanged bearings in a comprehensive range of metric and imperial sizes as standard. This extensive range suits a wide variety of industrial applications, with additional bespoke dimensions available through Bowman's in-house machining service.
Can WMU® flanged bearings run dry (without lubrication)?
Yes. WMU® PTFE lined flanged bearings are specifically designed for dry-running operation. Their low-friction PTFE sliding layer provides excellent wear resistance and reliable performance without continuous lubrication, making them ideal for applications where maintenance is limited or grease contamination must be avoided.
Can I order custom WMU® flanged bearing sizes?
Yes. Bowman offers an in-house machining service to manufacture custom WMU® flanged bearings to meet specific application requirements. Bespoke internal diameters, external diameters, flange dimensions, and lengths can be produced to suit OEM designs, replacement components, and specialist engineering applications.
