Metric WMUB Plain Bearings

Part Number: WMUB 65 70 30

WMUB Plain Bearings

Details

Inner Diameter65
Outer Diameter70
Length30
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 Fitted64.9965.11
Recommended Housing Size7070.03H7
Overall Length29.7530.25
Shaft Diameter64.9464.97
Inside Chamfers0.21
Outside Chamfers1.22.4

PV Calculation

ValuesMaximum
Speed
rpm
1469.123 rpm
Load
kg
49694.19 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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