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Air motor capable of precise position control

20 March 2008

For low speed stop/start applications under load, the Huco Dynatork piston air motors continues to be an ideal choice. Their very nature makes them prime candidates for operation in hazardous or sensitive environments such as hydrocarbon engineering, paint manufacture, paper conversion, wood working and food processing.

The continuous development of this product has now led to the introduction of the next generation of models. Reflecting the improved technical capability of the only air motor capable of precision position control, the appearance of the new Huco Dynatork is significantly enhanced. It looks every inch a highly engineered product suitable for use in any operating environment.

On the original design, the pneumatic tubing was external to housing and made the product vulnerable to some degree. It also made it more sensitive to temperature extremes; however, this was a problem that could be overcome by the specification of copper tubing.

The pneumatic porting on the latest models is now an internal feature, making them far more robust. Huco Dynatork has also recessed the fasteners to reduce potential bug traps to the benefit of hygiene conscious sectors. Because of their exceptionally clean operation, availability with non-lube air supply and corrosion resistance, these air motors are ideal for the food and pharmaceutical production environments. This latest development reinforces this suitability.

The indexing and positioning operations common in these sectors are particularly well served by a Huco Dynatork piston air motor. Alternative makes operate with a system of metal pistons and connecting rods that are unable to provide instant stop/start. Not only is controllability compromised but so too is service life as these parts wear.

The floating piston design of the Huco Dynatork air motor transmits the maximum torque on start-up, which can be adjusted to fine limits by standard air-flow valves. Pulse counters can be specified to allow programming of direction of rotation, speed and number of revolutions, and even fractions of a revolution. This means the motors can provide near instant stop/start/reversal and drive under load with characteristics similar to those of a stepper motor.

These qualities are complemented by air consumption only a fraction of that used by vane motor designs, providing significant cost savings even at maximum torque.

In common with their predecessors, the new Huco Dynatork air motors are available with maximum torques up to 16Nm (or 550Nm with gearbox). Models are available in aluminium or acetal and may be specified with a choice of motors and gearboxes or leadscrews. A further new introduction is a controller available in two sizes to suit the motor.

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