Slotless, brushless ring motors with high torque output and zero cogging
Frameless design for easy integration into OEM machines
Various winding options available
Includes Hall effect sensors for commutation
The S-series motors are Aerotech\'s high-performance brushless, frameless torque motors. The motors feature rare-earth magnets for maximum torque and acceleration in a compact assembly.
The S-series motors utilize a slotless stator design and high pole-count rotor to provide zero cogging for exceptional velocity stability. The laminations contain no slots, eliminating torque ripple and cogging torque that produces velocity disturbance. The S-series motors are well-suited for direct-drive applications such as printing and scanning where velocity ripple cannot be tolerated.
The S-series slotless motors cover a wide range of torque and package sizes. Continuous torque ranges from 0.20 N·m to 29.09 N·m. Peak torque ranges from 0.82 N·m to 116.37 N·m. The open design of the S-series motors allows for custom winding or mechanical variations to meet any application need.
The S-series motors are designed for applications in OEM machines. The S-50 (50 mm diameter) motor is ideal for small, tight spaces such as spindles or small feed rolls. The S-180 (180 mm diameter) and S-240 (240 mm diameter) can accelerate large print drums or precision positioning tables.
All S-series motors are supplied as two pieces – a slotless stator and a permanent magnet rotor. The stator is a standard 3-phase winding assembly with Hall-effect devices. They can be driven using a simple six-step or sinusoidal commutation algorithm. Aerotech’s Ndrive series amplifiers are performance-matched to the S-series motors for easy integration. The hollow rotor mounts directly to a drive axis with no gearing required.
Custom variations can be engineered to your requirements with minimal lead time.
Need help sizing your motor? Try Aerotech\'s Motor Sizer software to specify the ideal motor for your application.