Imperial WMU® Plain Bearings

Part Number: WMUI 48 51 48

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Details

Inner Diameter3
Outer Diameter3.1875
Length3
Backing MaterialStandard Steel

Material Specification

Structure S.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 – Dry 0.02 to 0.20
Coefficient of friction – With Oil 0.02 to 0.15
Recommended shaft finish (Ra) 0.04 max (N5)
Recommended shaft hardness (HB) 200 min

Tolerances & Fittings (Imperial)

Min Max Tolerance
Inside Diameter When Fitted3.00023.0068
Recommended Housing Size3.18583.1872
Overall Length2.993.01
Shaft Diameter2.99823

PV Calculation

Values Maximum
Speed
rpm
31830.989 rpm
Load
kg
229.358 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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