DC Motors of M Series
Motors of this series are designed for use in industrial drives and devices, where is required a continuous speed control. This can be obtained either by change of armature voltage or optionally by control of the excitation voltage - machining tools, printing machines, auxiliary drives on transport vehicles (fans, pumps).
This series is manufactured in four basic axial heights:
Sizes 112 and 132 are designed in two lengths of active iron, sizes 90 and 160 in three lengths.
Structural design of series of direct current machines allows high standardization of all components, preserving enormous amount of design variations. The production of this series complies with recommended sizes, mentioned in IEC 72 ČSN 35 0040.
The machines are four-poles, only exception is M 90, which is two-poles.
The motors can be powered even from controlled rectifiers.
Rotors of the machines are dynamically balanced with inserted half-key on the shaft extension and seated in radial ball bearings with permanent fat filling.
The upper side of the machines is equipped with terminal box with sealed bushings. Bushings lead to the side opposing the shaft and the customer is allowed to change their direction according to his needs (terminal box allows to change the position by 90°).
Fastening feet allow to secure the mechanical position of the machine while seated. All machines with mass over 30 kg are equipped with suspension screws to assure a safe suspension.
Vibrating of machines corresponds to category A. Machines with lower values of vibrating, in category B, can be delivered after agreement.
Noise level follows the standards of class 1. Insulation of the machines is provided in the class F of heat resistance.
All machines comply with the standards IEC 34-1, ČSN EN 60034 and ST SEV 1346-78.
