New Tecnotion QTR65 and QTR78 series frameless torque motors High Torque in an even smaller package

Almelo, The Netherlands, September 2017 - Tecnotion introduces a new series of smaller QTR torque motors at the SPS IPC Drives 2017. A new 65 mm and 78 mm diameter motor make the quality and torque of Tecnotion QTR series motor available for even smaller applications.

Central in the development of the new 65 and 78 mm motors is the low axial height and high torque density, known of existing Tecnotion QTR motors. A special rotor design allows for the large inner diameter. This makes it possible to use hollow axles, even for the QTR 65 motor. Four different stator heights are available for each diameter. The small QTR motors therefore suit a wide variety of markets including semiconductor, medical, machine tooling and robotics.


QTR 65 and QTR 78 motors have a brushless design. No mechanical transmission is needed. Torque ranges from 0.3-2.3 Nm continuous for the QTR 65 and 0.6-4.7 Nm continuous for the QTR 78. Speed ranges from 410-6200 rpm at just 48 volts.

To provide maximum flexibility and integration the QTR 65 and QTR 78 use flying leads instead of a power cable.

Featured Product

maxon motor’s - Compact power for your motion control application.

maxon motor's - Compact power for your motion control application.

maxon launches the next generation of positioning controllers - the EPOS4. A high performance module with detachable pin headers and two different power ratings. With a connector board, the modules can be combined into a ready-to-install compact solution. Suitable for efficient and dynamic control of brushed and brushless DC motors with Hall sensors and encoders up to 750 W continuous power and 1500 W peak power. The modular concept also provides for a wide variety of expansion options with Ethernet-based interfaces, such as EtherCAT or absolute rotary encoders.