Metric WMUB Plain Bearings

Part Number: WMUB 40 44 50

Details

Inner Diameter40
Outer Diameter44
Length50
Backing MaterialBronze

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 Fitted39.9940.085
Recommended Housing Size4444.025H7
Overall Length49.7550.25
Shaft Diameter39.9539.975
Inside Chamfers0.10.7
Outside Chamfers0.81.6

PV Calculation

ValuesMaximum
Speed
rpm
2387.324 rpm
Load
kg
50968.4 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.

Looking for a custom size or special specifications?

Whether you need standard or custom options, we’re here to help. Reach out now and let’s find the perfect match!