Stepper motors available with adaptable shaft
An
Astrosyn International Technology product story
Edited by the Engineeringtalk editorial team
Oct 21, 2009
High-torque stepper motors from Astrosyn International Technology are available with an adaptable rear shaft that can be fitted with an accessory such as a brake or encoder.
The rear shafts of the heavy-duty L280RE models have a drilled recess in their end, enabling a custom diameter shaft extension to be attached.
The Nema size 34 stepper motors offering high-torque outputs of up to 10Nm.
This is achieved through extended length rotor stacks and the use of rare earth materials for the rotor magnets.
The 1.8deg stepping angle motors are optimised for superior torque characteristics, with low detent torque to holding torque ratios for smooth operation.
Their oversized precision bearings can handle high axial loads.
Stack lengths range from 96 to 142mm and their 12mm-diameter shaft has a 4mm-wide keyway.
Brakes are frequently added to the z-axis motor of three-axis machines to prevent the load from falling back in the event of a power failure.
They are also incorporated where a fixed position is required in part of a duty cycle.
Brakes or encoders can be held in position on the L280RE via four M3.3 mounting holes on the rear flange.
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