Metric Bowman Oilless® Flanged Bearings

Part Number: WMOF 31.5 40 20 - 50 X 5

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Bowman Oilless bronze flanged bearings with graphite plug lubrication

Details

Inner Diameter31.5
Outer Diameter40
Length20
Flange Thickness5
Flange Diameter50

Material Specification

StructureCuZn25Al6Mn4 Bronze with solid graphite lubricant inserts
(alternative specifications are available on request)
 PV (N/mm² x m/s)3.3 max
Static load (N/mm²)100 max
Sliding speed (m/s)0.3 max
Operating temperature (°C)Up to 300
(alternative specs up to 400)
Coefficient of thermal expansion19 x 10-5/°C
Coefficient of friction0.16
Hardness (HB)210 min
Tensile strength (N/mm²)750 min
Elongation (%)12 min
Density (g/cm³)8

Tolerances & Fittings (Metric)

MinMaxTolerance
Flange Thickness Tolerance4.95
Recommended Housing Size4040.025H7
Inside Diameter31.5531.575
Overall Length19.719.9

PV Calculation

ValuesMaximum
Speed
rpm
151.576 rpm
Load
kg
6422.018 kg
PV Factor
N/A
N/mm² x m/s
3.3 N/mm² x m/s

⚠ Maximum PV Factor is 3.3! 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 Bowman Oilless flanged bearing?

A Bowman Oilless flanged bearing is designed for high-load, low-speed applications. The WMO range is made from rotational cast high-strength bronze with specially formed graphite plugs that provide lubrication.

How does graphite plug lubrication work?

The specially formed graphite plugs act as the lubricant within the bearing. This allows Bowman Oilless bearings to provide lubrication for high-load, low-speed applications.

What loads can these bearings handle?

Bowman Oilless flanged bearings are developed for high-load applications. The actual load capacity depends on the bearing size and operating conditions. Contact Bowman to discuss your specific requirements.

What sizes are available?

WMO flanged bearings are available in both metric and imperial sizes. Non-standard sizes can also be produced through our in-house machining service to suit specific customer requirements.

How do I request a quote?

Provide the required dimensions, quantity, and application details when requesting a quote. Bowman can support customers looking for Bowman Oilless Bearings USA and those looking to buy Bowman Oilless Bearings North America. As an industrial Bowman Oilless supplier in US, Bowman can also advise on suitable options.

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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