DC Motors / DC Servo Motors
There are two core types of DC motor, the brushed DC and the brushless DC motor. The brushed DC electric motor generates torque directly from DC power supplied to the motor by using internal commutation, stationary magnets (permanent or electromagnets), and rotating electrical magnets.
Brushed DC Motors
Advantages of a brushed DC motor include low initial cost, high reliability, and simple control of motor speed. Disadvantages can be attributed to high maintenance and low life-span for high intensity uses. Maintenance involves regularly replacing the brushes and springs which carry the electric current, as well as cleaning or replacing the commutator.
Brushless DC Motors
Brushless DC motors adopt a rotating permanent magnet within in the rotor, and stationary electrical magnets on the motor housing. A motor controller convert's Direct current to Alternative Current. This design is simpler than that of brushed motors because it eliminates the complication of transferring power from outside the motor to the spinning rotor. Advantages of brushless motors include long life span, little or no maintenance, and high efficiency. Disadvantages include high initial cost, and more complicated motor speed controllers.
All of our DC motors are covered by applicable UL, CSA and CE assurance as well as our unrivalled after sales support.Our knowledgeable technical sale steam will help ensure you choose the right DC servo for the right job.
DEGREE OF PROTECTION AND TYPE OF VENTILATION |
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SERIES |
DESCRIPTION |
DEGREE OF PROTECTION |
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| MGp |
PROTECTED SELF-VENTILATION On the drive shaft a fan is keyed which draws in air from the collector sideand expels it on the opposite side. The cooling, which is a function of the quantity of air which passes through the windings, varies with the motor speed. |
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| MGpF |
PROTECTED WITH FORCED RADIAL VENTILATION On the body an auxiliary fan is placed radially which is controlled by an alternating current motor. The electric fan is powered separately and the cooling is constant at any speed. A filter to retain impurities may be mounted on the inlet if required.
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| MGpV |
PROTECTED WITH FORCED AXIAL VENTILATION An auxiliary fan controlled by an alternating current motor is placed axially on the body, on the side opposite the control. The electric fan is powered separately and the cooling is costant at any speed. A filter to retain impurities may be mounted on the inlet if required.
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| MGc |
CLOSED SELF-VENTILATED The body is closed and outside, on the second end of the drive shaft, is mounted a fan which drives the air over the outside surface of the motor. The cooling, which is a function of the quantity of air produceds by the fan varies with the motor speed. For operation outside, seals may be provided on the drive shaft and on the terminal box, to prevent the infiltration of water (IP 55). |
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| MGx |
COMPLETELY CLOSED The body is completely closed without internal or external ventilation. The cooling depends on the heat dissipation capacity of the motor (IP 54). For operation outside, seals may be provided on the drive shaft and on the terminal box, to prevent the infiltration of water (IP 55).
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