Category : Electric DC motor, linear motor, stepper motor, transmission, drives & control, cylinder, gearbox > Drives

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- Pole-wound motor series:
Due to a new winding technology the AM3000 series are both shorter in length and have a higher torque than the AM2000 series and therefore provides an alternative to the established AM2000 series.
With conventional technology, the winding is pressed into the grooved laminated core. This only achieves a copper filling ratio (which determines the maximum torque) of approx. 40 %. Also, the insulation layer has to be significantly thicker in order to protect the wire from mechanical stress and prevent damage.
For the AM3000 motors, the stator is not wound outside the housing but inside through a needle winder. With pole winding, the copper wire is in close contact with the iron core. The wire insulation can be much thinner, since no pressing of the winding head is required. These measures lead to a significant increase in the proportion of "active" copper, which determines the torque value, so that the performance of the AM3000 series is approx. 25-35% higher. An additional benefit is that the motors are significantly shorter than conventional models.

Sealed winding:
The AM3000 servomotors are characterised by extremely low moment of inertia, robust design and high overload capacity. The winding is sealed, in order to eliminate air between the individual wires, since the thermal resistance of air is higher than that of epoxy resin. This further increases mechanical resilience, e. g. in case of vibrations.

Single-piece motor housing:
Servomotors dissipate a large proportion of the heat generated via the mounting flange. It is therefore important to keep the heat transfer resistance as small as possible. For this reason, the housings of the AM3000 motor series are made from a single piece, since material transitions increase the thermal resistance and have a negative influence on the stability of the motor.
The AM3000 Synchronous Servomotors are available with 7 different flange sizes. For each size, once the flange size has been defined, there is scope for variation in the length. The motors are offered with torques between 0.18 and 53 Nm and with a wide range of nominal speeds, so that for each application and gear ratio the motor with the optimum dimensions can be selected.

Properties :
- rotable plug connectors: the plug connectors for power and feedback are freely rotatable, making wiring of the whole machine easier
- pressed bearings: preventing axial motion of the shaft
- tight tolerances: resulting in a highly symmetric structure inside the motor reducing cogging to an absolute minimum
- feedback option (similar to the AM2000 series): resolver, single-turn and multi-turn absolute encoders
- the motors are available with smooth shaft or with groove and feather key

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