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Operating Manual
Parallel Misalignment
Angular Misalignment
When installing the pump and drive unit, it is
essential to ensure that the coupling is not
twisted during installation. The main cause of
misalignment is by fitting the baseplate to an
uneven surface.
Check the maximum angular and parallel
allowable misalignments for the couplings
before operating the pump.
Recommended
Coupling Type Maximum Parallel Maximum Angular
Misalignment Misalignment
Size mm Degrees
1 0.2
David Brown ± 1.5°
2 0.3
Nylicon Flexible (Per Gear in Mesh)
3 0.4
FL63
0.25
FL80 0.75°
William Kenyon
FL112 0.3
Flexilok
FL125 0.4
1.0°
FL160 0.5
F40 1.1
F50 1.3
Fenaflex
F60 1.6
Flexible Tyres
F70 1.9
F80 2.1
F90 2.4
Note : The above table indicates the common coupling types used on the pump ranges.
Details for other coupling types will be available on request.
4.4 Coupling Misalignment
13