Metric Bronze Wrapped Plain Bearings

Part Number: WMB 280 285 90

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Details

Inner Diameter280
Outer Diameter285
Length90
Surface StyleDiamond Indentations

Material Specification

StructureCuSn8 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 friction0.08 to 0.25
Hardness (HB)90-120
Tensile strength (N/mm²)450 min
Yield point (N/mm²)250 min
Elongation (%)40

Tolerances & Fittings (Metric)

MinMaxTolerance
Inside Diameter When Fitted280280.13
Recommended Housing Size285285.052
Overall Length89.590.5
Shaft Diameter280.056280.108

PV Calculation

ValuesMaximum
Speed
rpm
170.523 rpm
Load
kg
308256.881 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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