Metric WMUB Plain Bearings

Part Number: WMUB 10 12 20

Bowman WMUB plain bearings with POM composite lining

Details

Inner Diameter10
Outer Diameter12
Length20
Backing MaterialBronze

Material Specification

StructureCuSn8 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 – Dry0.02 to 0.20
Coefficient of friction – With Oil0.02 to 0.15
Recommended shaft finish (Ra)0.04 max (N5)
Recommended shaft hardness (HB)200 min

Tolerances & Fittings (Metric)

MinMaxTolerance
Inside Diameter When Fitted9.9910.058
Recommended Housing Size1212.018H7
Overall Length19.7520.25
Shaft Diameter9.9729.987
Inside Chamfers0.10.5
Outside Chamfers0.21

PV Calculation

ValuesMaximum
Speed
rpm
9549.297 rpm
Load
kg
5096.84 kg
PV Factor
N/A
N/mm² x m/s
1.8 N/mm² x m/s

⚠ Maximum PV Factor is 1.8! Reduce speed or load.

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 is a WMUB plain bearing?

A WMUB plain bearing is a wrapped bearing featuring a bronze backing and PTFE-lined surface. Designed for low-friction operation and minimal wear, WMUB bearings are suitable for demanding industrial applications, including dry-running conditions.

What are the benefits of POM composite lining?

A POM composite lined sleeve bushing offers low friction, good wear resistance, and reliable performance under demanding operating conditions. Depending on the application, composite lining can help reduce maintenance requirements and support consistent bearing performance.

What loads and speeds can WMUB bearings handle?

The load and speed capabilities of WMUB bearings depend on factors such as bearing dimensions, operating conditions, lubrication, temperature, and application requirements. Our team can help determine the appropriate WMUB specification based on your required load and speed.

What sizes are available for WMUB bearings?

WMUB bearings are available in standard metric and inch sizes. For applications requiring specific dimensions, our in-house machining capabilities allow us to produce non-standard sizes to meet customer requirements.

How do I request a quote for WMUB bearings?

To request a quote, provide your required dimensions, quantity, application details, and operating conditions. As an industrial WMUB supplier in the US, we support customers looking to buy WMUB bearings in North America and can recommend the appropriate Bowman WMUB solution for their 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!

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