Metric WMX® Plain Bearings

Part Number: WMX 280 285 50

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Details

Inner Diameter280
Outer Diameter285
Length50

Material Specification

Structure S.A.E. 1010 steel backing strip with sintered bronze and Acetal Copolymer layers
Max PV (N/mm² x m/s) 2.8
Max Static load (N/mm²) 140
Max Dynamic load (N/mm²) 70
Max Sliding speed – With Grease (m/s) 2.5
Operating temperature (°C) -40 to 110
Thermal Conductivity (W/mk) 2
Coefficient of friction – With Grease 0.05 to 0.15
Recommended shaft hardness (HB) 200 min

Tolerances & Fittings (Metric)

Min Max Tolerance
Inside Diameter When Fitted280.13280.292
Recommended Housing Size285285.052H7
Overall Length49.7550.25
Shaft Diameter279.919280
Inside Chamfers0.21
Outside Chamfers1.22.4

PV Calculation

Values Maximum
Speed
rpm
170.523 rpm
Load
kg
199796.126 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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