Imperial SWB Plain Bearings

Part Number: WMSWI 20 22.5 28

Details

Inner Diameter1.25
Outer Diameter1.40625
Length1.75
Surface StyleSmooth

Material Specification

Structure Steel backing strip with a sintered bronze layer
PV (N/mm² x m/s) 2.8 max
Static load (N/mm²) 150 max
Sliding speed – With Oil (m/s) 10 max
Sliding speed – With Grease (m/s) 2.5 max
Operating temperature (°C) 250 max
(dependant on lubrication)
Coefficient of friction – With Oil 0.5 to 0.12
Coefficient of friction – With Grease 0.5 to 0.15
Sintered layer hardness (HB) 60-100

Tolerances & Fittings (Imperial)

Min Max Tolerance
Inside Diameter When Fitted1.251.266
Recommended Housing Size1.406251.42225
Overall Length1.741.76
Shaft Diameter1.1231.124
Wall Thickness0.0780.08

PV Calculation

Values Maximum
Speed
rpm
152788.745 rpm
Load
kg
33.448 kg
PV Factor
N/A
N/mm² x m/s
2.8 N/mm² x m/s

⚠ Maximum PV Factor is 2.8! Reduce speed or load.

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