Metric WMUB Plain Bearings

Part Number: WMUB 220 225 60

WMUB Plain Bearings

Details

Inner Diameter220
Outer Diameter225
Length60
Backing MaterialBronze

Material Specification

StructureCuSn8 backing strip with sintered bronze & 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 Fitted220.07220.216
Recommended Housing Size225225.046H7
Overall Length59.7560.25
Shaft Diameter219.904219.950
Inside Chamfers0.21
Outside Chamfers1.22.4

PV Calculation

ValuesMaximum
Speed
rpm
434.059 rpm
Load
kg
336391.437 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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