Magnet

Selection of MagentsSelection of Magents

Selection of Magnet (1)

We provide three different materials for magnets, the choice depending on the necessary torque and rotor inertia requirements, etc. Please note that the price of magnets varies depending on the material. In principle, we make the selection of material ourselves, doing our very best to keep prices low while ensuring the necessary torque. Of course, you, as our customer, can also specify the magnet material that you require. We have two methods of assembling the rotor - adhesive type, or plastic molding - and the selection of method is based on a consideration of the difference in cost and manufacturing technology. Depending on the assembly method used, there are variations in cost and rotor inertia.

Combination of Motor size and Magnet Material
MSPL : Ferrite plastic magnet
MS50 : Polar anisotropy ferrite sintered magnet
MS70 : Nd-Fe-B bonded magnet

Selection of PM Motors

Selection of Magnet (2)

The differences in torque arising from the choice of magnet material are roughly as shown below.
The figures are shown as an index conversion value where MS50 is 100.

MSPL 75
MS50 100
MS70 115



Selection of PM Motors

Standard Inertia for Each Motor Size

[g.cm2]
Selection of PM Motors

* For MS50 and MS70, the mold type is the standard specification.An adhesion type is applied only at the demand on characteristic (a big inertia is needed) etc., while it becomes factor a cost-up.