Metric Bronze Wrapped Plain Bearings

Part Number: WMB 280 285 80

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Bowman WMB wrapped CuSn8 bronze plain bearings for heavy load applications

Details

Inner Diameter280
Outer Diameter285
Length80
Surface StyleDiamond Indentations

Material Specification

Structure CuSn8 bronze with either grease pockets or holes
PV (N/mm² x m/s) 2.8 max
Static load (N/mm²) 120 max
Dynamic load (N/mm²) 40 max
Sliding speed – With Grease (m/s) 2.5 max
Intermittent temperature (°C) 130 max
Operating temperature (°C) -100 to 200
Thermal Conductivity (W/mk) 60
Coefficient of friction 0.08 to 0.25
Hardness (HB) 90-120
Tensile strength (N/mm²) 450 min
Yield point (N/mm²) 250 min
Elongation (%) 40

Tolerances & Fittings (Metric)

Min Max Tolerance
Inside Diameter When Fitted280280.13
Recommended Housing Size285285.052
Overall Length79.580.5
Shaft Diameter280.056280.108

PV Calculation

Values Maximum
Speed
rpm
170.523 rpm
Load
kg
274006.116 kg
PV Factor
N/A
N/mm² x m/s
2.8 N/mm² x m/s

⚠ Maximum PV Factor is 2.8! 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 WMB bronze wrapped bearing?

A WMB bronze wrapped bearing is a plain bearing developed for slow-speed, high-load applications, particularly where oscillating motion is involved. The WMB range is available with lubrication pockets, through-holes, and grooves.

What loads can these bearings handle?

WMB bronze wrapped bearings are designed for high-load applications. The load capacity depends on the bearing size, operating conditions, and application. Contact Bowman to discuss your specific requirements.

How is wrapped different from solid bronze?

WMB bearings are a wrapped bronze bearing solution designed for slow-speed, high-load applications. The choice between a wrapped bearing and a solid bronze bearing depends on the application, load, movement, and operating conditions.

What sizes are available?

The WMB range is available in metric sizes only. Bowman’s in-house machining service can also produce non-standard sizes 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 WMB CuSn8 bearings USA, including those looking to buy Bronze Wrapped bearings North America. Our team can also advise on the appropriate bronze wrapped bearing solution for your 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!