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New generation of torque motors

08 June 2009

More and more machine builders are asking for direct drive solutions instead of conventional motor-gearbox combinations, and for this reason, Baumüller introduced its new generation of DST torque motors at Hanover Messe 2009.

New generation of DST torque motors
New generation of DST torque motors

“Today’s machine concepts face stringent requirements,” says Volker Meyer.

“In addition to increased productivity and availability and better energy efficiency, improvements in cost effectiveness over the machine’s entire life cycle are expected.

“However, these goals are not met in the case of maintenance-intensive gearboxes and low-efficiency standard motors or hydraulic systems.”

For this reason, Baumüller’s new line of torque motors were launched with a significantly better power density and an extended range of speeds.

In addition, the torque range of the existing product line has been significantly increased, he says.

Extension of the motor series to include a 400-size motor means that, for the first time, rated torques up to 20,000 Nm and maximum torques up to 32,000 Nm are possible.

This not only opens up new application areas but also significantly increases productivity in existing applications.

The new product line also requires less installation space, thereby reducing the contact surface for machines.

“Because torque motors have practically no residual torque, the customer can improve the smooth running characteristics,” says Mr. Meyer, “and, thus, the quality of its products, thus achieving a significant competitive advantage.”

ENERGY EFFICIENCY

Compared to conventional motor-gearbox combinations, direct drives can also improve cost and energy efficiency.

The reason for this is simple: direct drives don’t have wear-prone mechanical components, and this significantly reduces friction losses in the system, thus improving the energy balance.

And this can be a decisive factor in times of rising fuel prices, Mr. Meyer reminds us.

“Moreover, the DST motors exhibit very high efficiencies at the operating point,” he says.

“This enables an extremely efficient energy conversion since additional losses due to mechanical transmission elements are avoided. As a result, the efficient energy conversion is even greater when compared to conventional solutions.”

Mr. Meyer says Baumüller has been a "major player" on the direct drive technology market since 1991.


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