Metric SWB Plain Bearings

Part Number: WMSW 18 20 25

Details

Inner Diameter18
Outer Diameter20
Length25
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 (Metric)

Min Max Tolerance
Inside Diameter When Fitted1818.027
Recommended Housing Size2020.021
Overall Length24.7525.25
Shaft Diameter17.97217.984
Wall Thickness1.0071.056

PV Calculation

Values Maximum
Speed
rpm
10610.33 rpm
Load
kg
6880.734 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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