Piston air motors are highly suitable for low-speed stop/start applications under load, as well as for operation in hazardous or sensitive environments such as hydrocarbon engineering, paint manufacture, paper conversion, woodworking and food processing.

The continuous development of this product has now led to the introduction of the next generation of models.

Furthermore, reflecting the improved technical capability of what is claimed to be the only air motor capable of precision position control, the appearance of the new Huco Dynatork piston air motor is significantly enhanced.

On the original design the pneumatic tubing was external to the housing and made the product vulnerable to some degree. It also made it more sensitive to temperature extremes - a problem that could, however, 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 highly suitable for food and pharmaceutical production environments. The latest developments reinforce this suitability.

Indexing and positioning operations, which are common in these sectors, are particularly well served by a Huco Dynatork piston air motor. According to the company, 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 for programming the 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 lead screws. A further new introduction is a controller in two sizes to suit the motor.

Huco Dynatork