Metric WMU® Plain Bearings

Part Number: WMU 02 3.5 03

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Details

Inner Diameter2
Outer Diameter3.5
Length3
Backing MaterialStandard Steel

Material Specification

StructureS.A.E. 1010 steel backing strip with sintered bronze and PTFE layers
Max PV – Dry (N/mm² x m/s)1.8
Max PV – Oiled (N/mm² x m/s)2.8
Max Static load (N/mm²)250
Max Dynamic load (N/mm²)140
Max Sliding speed – Dry (m/s)2.5
Max Sliding speed – With Oil (m/s)5
Operating temperature (°C)-200 to 280
Thermal Conductivity (W/mk)42
Coefficient of friction – Dry0.02 to 0.20
Coefficient of friction – With Oil0.02 to 0.15
Recommended shaft finish (Ra)0.04 max (N5)
Recommended shaft hardness (HB)200 min

Tolerances & Fittings (Metric)

MinMaxTolerance
Inside Diameter When Fitted2.012.058
Recommended Housing Size3.53.506H6
Overall Length2.753.25
Shaft Diameter1.9942
Inside Chamfers0.10.4
Outside Chamfers0.20.8

PV Calculation

ValuesMaximum
Speed
rpm
47746.483 rpm
Load
kg
152.905 kg
PV Factor
N/A
N/mm² x m/s
1.8 N/mm² x m/s

⚠ Maximum PV Factor is 1.8! Reduce speed or load.

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