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AST Disc Armature Brushed DC Motors

Date: 21 June 2007

These motors outperform conventional iron cored designs

*Range of disc armature DC servo motors offer excellent characteristics for high performance motion applications.

*Exceptional dynamic performance and compact design keeps this servo motor technology in demand.

AST brushed DC servo motors use ironless disc armature technology for exceptional speed and rapid positioning performance in a very compact design. Available from Heason Technologies, these zero-cogging, "flat" motors have minimal inductance, near full torque throughout the rated speed range and a high current overload capability that allows instantaneous, sub-millisecond torque for an acceleration performance over 10x that of conventional iron-cored DC motors. The low inertia motor design has an unparalleled torque-to-inertia characteristic and a typical move from standstill to 3000 rpm can be achieved in only 45 degrees of motor rotation. Low inductance also results in much longer brush life than iron cored motors.

The complete range covers four frame sizes from around 90 mm to 190 mm diameter (size 6, 9, 12 and 16) with nominal lengths from 27 mm to 63 mm. Models are available with standard ferrite or high performance neodymium iron-boron magnets in power ratings from 30 W to 1.0 kW (Peak Torque from 70 Ncm to 3500 Ncm). Integrated tachos, optical encoders, failsafe brake and precision gearheads are all available as standard.

A ruggedised version with a heavy duty cast aluminium housing is also available for use in applications such as radar, tracking and navigation systems, CCTV camera control, mobile machinery, and mobility equipment. Other applications areas for the range include industrial control robotics, stage lighting, remotely controlled devices, transcription quality recording systems, and winding machinery.

The highly efficient motor design is also suited to battery powered and vehicle based applications where low voltage versions are available.

This well-proven technology is used for demanding motion control applications where ultra-precise, smooth speed control or fast incremental moves with rapid settling times are of prime importance. Flat disc servo motors can also be used where the length of conventional brushed or brushless servo motors can be a problem - the flat pancake design is ideally suited for use with flat high ratio reduction gear systems also available from Heason Technologies.

Please click here to email a member of our sales team for more information on this exciting product.

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