Metric WMU® Plain Bearings

Part Number: WMU 35 39 30

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Details

Inner Diameter35
Outer Diameter39
Length30
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 Fitted34.9935.085
Recommended Housing Size3939.025H7
Overall Length29.7530.25
Shaft Diameter34.9534.975
Inside Chamfers0.10.7
Outside Chamfers0.81.6

PV Calculation

ValuesMaximum
Speed
rpm
2728.37 rpm
Load
kg
26758.41 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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