Hollow Shaft Actuators
January 1, 2017
Harmonic Drive LLC has introduced hollow shaft actuators with direct drive motor performance in a compact package. The SHA-CG offers improved rotary positioning accuracy and with surface runout less than 10 µm.
The SHA-CG actuators feature a compact, hollow shaft configuration for design versatility in demanding applications. Suitable for machine tool applications, the SHA Series of brushless actuators provide high torque for fast acceleration and positioning. SHA-CG actuators are composed of a Harmonic Drive CSG zero-backlash gear combined with a brushless servomotor with an encoder resolution at the output up to 20,971,520 pulse/rev.
The actuators are also available with an optional brake. Positional accuracy better than 1 arc-min and repeatability better than ±5 arc-sec is achieved while delivering up to 3,400 Nm of torque. A cross-roller bearing allows mounting of large loads directly to the actuator without the need for additional support.
"The SHA-CG has a torque to weight ratio as much as eight times greater than comparable housed direct drive motors, and a torque to volume ratio as much as six times greater," said a company spokesperson. "This allows for a more compact and light-weight machine design."
The SHA-CG specifications are:
- High accuracy: zero-backlash Harmonic Drive gear reducer
- Hollow shaft diameter: 17-45 mm
- Available in four sizes: 20, 25, 32, 40
- Maximum speed up to 120 RPM
- Design: compact, flat, hollow shaft
- Optional mounting stand available.
For more information contact:
Harmonic Drive LLC
247 Lynnfield Street
Peabody, MA 01960-4905
978-532-1800
sales@harmonicdrive.net
www.harmonicdrive.net
< back