Bowman Bearing Selector

The Bowman Bearing Selector

The Bowman Bearing Selector has been developed to assist you in selecting the correct bearing for your project. This bearing selector reduces the uncertainty when selecting bushes and you can rest assured that whether you are in the design process or replacing a bearing in an existing application that you have selected the right one. The Bowman Bearing Selector will search our entire product range and select the bearing that corresponds to a set of parameters that you enter into it.

If you already know which bearing you need, you can use the bearing selector to review the technical information on that particular bearing. The bearing selector will show you the tolerances, load ratings, maximum speed, material information and much more.

How to use the Bowman Bearing Selector

  1. Enter your application parameters
  2. Click on one of the suggested bearings that meets your criteria to view the datasheet
  3. Give us a call on 01235 462500 or email us on sales@bowman.co.uk to receive your order within 24 hours!

Step One – Find a bearing

Select Product

Measurements

mm
mm
mm

Speed and Load

rpm
kg

Step Two – Selected Bearing

Flanged Bearing

Wrapped PTFE Lined

Metric Wrapped PTFE Lined Flanged Bearing

Part number: WMUF 20 11.5 30

Details

Inner Diameter 20
Outer Diameter 23
Length 11.5
Flange Thickness 1.5
Flange Diameter 30
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 Tolerance
Overall Length 11.250 11.750
Flange Diameter Tolerance 29.500 30.500
Recommended Housing Size 23.000 23.021 H7
Shaft Diameter 19.959 19.980
Inside Diameter When Fitted 19.990 20.071
Inside Chamfers 0.100 0.700
Outside Chamfers 0.200 1.000

PV Calculation

Values Maximum
rpm 4774.648 rpm
kg kg
PV Factor N/mm² x m/s 1.8 N/mm² x m/s

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