Metric Bronze Wrapped Plain Bearings

Part Number: WMB 270 275 70 H

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Bronze Wrapped Plain Bearings

Details

Inner Diameter270
Outer Diameter275
Length70
Surface StyleHoles

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)

MinMax
Inside Diameter When Fitted270270.13
Recommended Housing Size275275.052
Overall Length69.570.5
Shaft Diameter270.056270.108

PV Calculation

Values Maximum
Speed
rpm
176.8 rpm
Load
kg
231192.7 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.

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