Advanced Servo Motors ...
PMW Dynamics provide a comprehensive portfolio of advanced PM servo motors deploying both brush and brushless technology each bringing their specific benefits to an application
Remember your choice is not limited to catalogue items as PMW Dynamics have the capability to design and manufacture custom motors optimised to the exact requirement of your application
Industries Served by PMW Dynamics
A diverse range of industries rely on PMW Dynamics to engineer motor solutions design specifically for their demanding needs. Here's some examples ...
NewsAugust 2023
Challenger 2 Tank Ultra Slim Fan Motor
Asked to manufacture a motor to drive the cooling fan for the auxiliary power unit (APU) of the Challenger 2 tank, PMW created a new design of its flat profile brushed DC motor to accommodate twin armatures. This effectively doubled the power output of the unit with only a minimal increase in its axial length
Challenges
- Flat Profile
- High Power
- Extreme Operating Temperature
- EMP Resistant
Results
- Ultra Flat Printed Armature Design
- Dual Armatures x2 Torque
- Design & Built to DEFSTAN 00-35
- Sensorless Design
During the development PMW carried out extensive tests to ensure that all internal components were optimised for the specified conditions. The tests resulted in modifications to the bearing grease, brush materials and armature in order to withstand the temperature regime, plus additional RFI suppressing components to meet the rigorous electromagnetic compatibility (EMC) requirements
The motor achieved compliance with exacting military standards, with the DEFSTAN 00-35 British Ministry of Defence test regime requiring motors to be subjected to -20°C (-4°F) and +150°C (302°F) for two hours each. The motors then faced endurance tests of 750 hours of operation at 65°C (149°F) followed by 85°C (185°F), then by simulations of dust, sand and driving rain.
With its dual shaft seals, the printed armature motor also achieved an environmental IP55 rating
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