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Product/Service Catalog

SHA CG Actuator

Harmonic Drive LLC

High torque, hollow shaft servo actuators with direct drive motor performance in an extremely compact size. The SHA-CG offers superior rotary positioning accuracy and an output flange with a surface run-out less than 10 microns. 

The SHA-CG actuators feature a compact, hollow shaft configuration for design versatility in demanding applications. Ideal 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 N m of torque. A robust 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 8 times greater than comparable housed direct drive motors, and a Torque to Volume ratio as much as 6 times greater. This allows for a more compact and light-weight machine design.

SHA-CG Specifications:

  • High Accuracy:  Zero-backlash Harmonic Drive® gear reducer
  • Hollow Shaft diameter:   17-45mm
  • Available in 4 sizes, 20, 25, 32, 40
  • Maximum speed up to 120 rpm
  • Design: Compact, flat, hollow shaft

Known for its expert engineering and manufacturing, Harmonic Drive LLC products are relied upon every day throughout the manufacturing community.

APPLICATIONS for Harmonic Drive products:

  • Machine Tool: Milling Head, Tool Changer, Rotary Table, Grinding, B & C Axis
  • Robotics: Industrial, Semiconductor & Flat Panel, Humanoid, Mobile Robots
  • Energy: oil exploration, drilling and positioning, wind power, solar
  • Defense: Unmanned Vehicles, Remote Weapon Stations, Antenna Pointing
  • Medical: Surgical Robots, Medical Imaging, Therapeutic, Prosthetics, Exoskeletons, Lab Automation
  • Aerospace: Solar Array Drives, Antenna Pointing, Valve Actuators, Lunar and Interplanetary Rovers

 


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