HM 20 X 9/4,5 X 6 / N – NDFEB HOLDING MAGNET
PERFORMANCE PARAMETERS
External diameter20 [mm]aperture diameter for head of a screw9 [mm]Internal diameter4,5 [mm]Height6 [mm]MaterialNeodymiummaximal hoisting capacity15 [kg]
The pull force given refers to hoisting capacity measured in optimal conditions, by using as a backing plate a sheet made of low-carbon steel, 10 [mm] thick, of smooth surface and with the force acting perpendicularly, in room temperature.
Notice: the pull force given should be treated as only a comparative value. An actual pull force depends on the following factors:
- air gap (a distance) between holding magnet and an backing plate (in some conditions even a very narrow gap, i.e. 0,5 [mm] can result in decrease in pull force by a half)
- material, of which a backing plate is made (the higher carbon proportion in steel, the smaller pull force)
- surface of a backing plate (the smoother the surface, the bigger pull force)
- direction of acting of detaching force (the biggest pull force is obtained with perpendicular acting of detaching force)
- thickness of a backing plate (the backing plate cannot be too thin, because in such case part of magnetic flux is not used for closing of a magnetic circuit)
- working temperature (in temperature of 80°[C] pull force can be lower of up to 20 per cent)