Rare earth permanent magnets are widely
used in production of rotors and stators of modern electrical
motors and generators. Application of rare earth magnets
in oil-filled ac converter-fed motors offers special advantages.
Use of high-energy magnets allows to reduce the rotor
diameter and increase the rotor-to-stator gap. Both of
these factors lead to the reduction of hydrodynamic losses
in the gap, and heat production in armature coils and
the magnets, and thus to enhance the motor efficiency.
MMT Company has a great experience in
development and production of rotors for electrical machines
for a wide range of applications. Here are just a few
examples:
- micromotor for dentist equipment
(18 W at 0...40 000 rpm);
- instrument drive (2000 W at
0...18 000 rpm);
- special drive #1 (32 000 W
at 0...6000 rpm);
- special drive #2 (24 000 W
at 0...12 000 rpm);
Our Company produces in lots 4-pole and 8-pole rotors
for special drives.
Special technological complex of MMT Company allows to
perform all the operations for the production of multipole
rotors for electrical machines, including the following:
- production of permanent magnets;
- mounting of the magnets on the previously
balanced spindles;
- banding of the assembly;
- finishing treatment of the banded
assembly;
- final balancing of the rotor;
- complete control and certification
of the geometry and overall magnetic properties of the
products;
- rotor packaging.
Thus the Customer can receive complete
certified and balanced rotors with weights in the range
from several grams up to tens of kilograms ready for assembly
into the electrical machines.
