Small Torque Motors Suit Harsh Environments

Parker Hannifin has broadened its range of frameless torque motors with the introduction of its new TK130 models, which, while smaller in size, offer precise motion and high dynamic performance. Based on proven brushless technology, Parker TK motors have been designed for use in high-performance applications requiring exceptionally smooth rotation, high positional accuracy and high dynamic performance, such as machine-tool indexing and rotary tables.

Their robust design makes them suitable for harsh environments, including wind and water turbines, mixers, pulpers and crushers. Delivered as kits consisting of separate stator and rotor elements with large inner diameters, the gearless design of TK motors is intended to be directly integrated into the mechanical structure of the machine. The load is then directly connected to the motor's moving part, leading to simplified mechanical designs, reduced footprint and less weight. Parker Hannifin claims that, as TK motors have no mechanical parts subject to wear, the lifetime of the whole system is increased and maintenance costs reduced significantly.

The absence of gears between the load and the motor serves to suppress backlash and play inherent in conventional mechanical transmissions, resulting in greater rigidity and superior accuracy. Available as either naturally ventilated or water-cooled models, Parker TK motors offer temperature resistance up to 150C, as well as complete immunity to lubricants. The motors can be customised to suit the individual needs of specific applications, both in terms of mechanical design and subsystem integration.

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