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Megaflux Series Thin-Ring Torque Motors Available from Heason
Date: 19 June 2008
Large diameter-to-length form factor, through-hole construction and frameless rotor/stator design suit space-saving rotary positioning applications...
A range of brushless servo motors with a
separate rotor and stator design, aimed at the smooth precise
control and direct-drive of large inertia or high torque loads, is
available from precision motion specialists Heason Technology
Limited. The Megaflux thin-ring torque motor from
USA manufacturer Emoteq Corporation has an inherently large
diameter-to-length ratio - from 150 mm x 30 mm to 760 mm x 123 mm -
and covers continuous stall torque from 3 Nm to over 2000 Nm.
The frameless construction and space-saving form factor of the
Megaflux allows the motor to be directly integrated on the driven
shaft eliminating the resonance associated with flexible couplings;
and with no need for a gearbox, the high torque/low cog output is
backlash-free ensuring precise control.
The large through-hole is especially useful for accommodating
electrical wiring and other services such as slip ring assemblies
and beam delivery systems whilst the form factor will suit OEMs
requiring rotary positioning axes in space restricted applications.
The Megaflux has been widely used in robotics, azimuth/elevation
tracking devices, laser scanning systems, and machine tools.
The standard range covers eight frame sizes and forty models with
motor characteristics fully specified in a 24 page catalogue
available in hard copy of as a PDF from Heason Technology. In
addition, customised windings are available to optimise the
applications' torque and speed performance requirements. Hall
sensors can also be built into the assembly, simplifying
commutation.
Heason can supply the Megaflux thin-ring motor as a separate
component along with commutation and positioning encoders, servo
drives and motion controls. The motor can also be assembled on
customer supplied components or built into complete positioning
actuator solutions through Heason's motion systems design service.
An example Megaflux motor may be built into an actuator which
includes the Spinea TwinSpin® gearbox
- a high precision/high torque trochoidal gear reduction system and
integral heavy duty axial/radial bearing that provides a
space-saving, single unit "bearing reducer" with an
industry-leading output torque to size ratio.