Details
| Inner Diameter | 20 |
| Outer Diameter | 23 |
| Length | 21.5 |
| Backing Material | Bronze |
| Flange Thickness | 1.5 |
| Flange Diameter | 30 |
Material Specification
| Structure | CuSn8 backing strip with sintered bronze & 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 | |
|---|---|---|---|
| Inside Diameter When Fitted | 19.99 | 20.071 | |
| Recommended Housing Size | 23 | 23.021 | H7 |
| Overall Length | 21.25 | 21.75 | |
| Shaft Diameter | 19.959 | 19.98 | |
| Inside Chamfers | 0.1 | 0.7 | |
| Outside Chamfers | 0.2 | 1 |
Frequently Asked Questions
What is a WMUB flanged bearing?
A WMUB flanged bearing is a wrapped plain bearing with a bronze backing and PTFE lining, designed to provide reliable low-friction performance in dry-running applications. WMUB bearings are particularly useful where a flange is required to provide axial positioning or support.
When should I use a flanged bearing over a plain bearing?
A flanged bearing is useful when the bearing needs to provide both radial support and axial positioning within an assembly. WMUB flanged bearings can help simplify component design where space, alignment, or axial movement needs to be controlled.
What is POM composite lining?
POM (polyoxymethylene) is an engineering thermoplastic known for its low friction, wear resistance, and dimensional stability. A POM composite flanged bushing can provide reliable performance in applications where reduced friction and wear are important, particularly under dry-running conditions.
What sizes are available for WMUB bearings?
WMUB bearings are available in standard metric and inch sizes to suit a variety of industrial applications. Customized dimensions can also be produced through our in-house machining capabilities to meet specific customer requirements.
How do I request a quote for WMUB bearings?
Contact our team with your required dimensions, quantity, application details, and operating conditions. As an industrial WMUB supplier in the US and North American market, we can recommend a suitable Bowman WMUB solution and provide a quote based on your requirements.
