Linear motor offers superior control stiffness
STB11's combination of simplicity, reliability and dynamic performance enable fast-response digital servos to replace complex, wear-prone electromechanical assemblies.
Copley Controls' ServoTube small-silhouette STB11 direct-drive size 11 linear motor combines a slim form factor with superior control stiffness, unmatched bandwidth, and +/-12 microns positioning repeatability.
STB11's combination of simplicity, reliability and dynamic performance enable fast-response digital servos to replace complex, wear-prone electromechanical assemblies.
The motors are IP67 rated and are food-safe.
The STB11 motors provide ten times the speed and ten times the life of ballscrew actuators.
STB11-based positioning stages have the same form factor as ballscrew actuators.
Drop-in ballscrew replacement enables an easy migration to next-generation performance.
The forcer width of 26mm provides benefits in applications where space is critical and costly.
STB11 motors lend themselves to integration into compact systems used for inspection, analysis, assembly and packaging.
Their small silhouette translates into more production per square foot in hosts of space-critical applications.
The motor's combination of powerful drive force and low mass enable it to accelerate light loads to 25g.
Specifications include stroke to 372mm, 46 to 92N peak force, and 3.1 to 5.2m/s maximum velocity.
Thrust rod diameter is 11mm.
The motor's integral solid-state position sensor eliminates the expensive and delicate external encoder traditionally required in linear motor systems.
The motor's load positioning forcer is driven directly by the interaction between its permanent magnet and electrically energised magnetic fields.
There are no intervening gear trains, ballscrews, flexible couplings or drive motors to add inertia and impair responsiveness.
The STB11's permanent magnets are sealed into the stainless steel thrust rod.
The load-carrying forcer travels on a low-friction single-rail bearing and motor drive coils are encapsulated within the forcer, which travels in free air and acts as an efficient heat dissipater.
Users can optimise servo position control by matching STB11 motors to Copley's Accelnet digital controllers.
Accelnet controllers provide powerful stand-alone and multi-axis control choices.
Networking options include CANopen, Ethercat, Macro and DeviceNet.
Operated from DC power supplies, the controllers deliver the 70V power needed for optimal motor performance.
ServoTube 11 motors, with fast-acting, direct drive digital precision, are natural candidates to replace complex electromechanical assemblies.
The motors shrink space requirements in semiconductor, medical, pharmaceutical, printing, assembly, dispensing, and packaging automation.
They are free from the friction and wear that undermine repeatability and dependability of ballscrew and other positioners.
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