SGM7A Rotary Servo Motor

50W – 7kW, Low Inertia
The general-purpose workhorse of the Sigma-7 line, SGM7A is available in a wide range of sizes and covers the capacity spectrum from low to medium power. Each of these brushless rotary servo motors is capable of producing a high rate of power at extremely low levels of inertia. SGM7A servos are also designed to deliver high torque performance when an application requires it. 24-bit encoder resolution maintains industry-leading positional accuracy across the power spectrum.

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Specifications & Features


  • 24-bit encoder resolution for superior accuracy
  • More compact than other motors with similar ratings, for a better fit in tight spaces
  • Completely compatible with Sigma-5 servos
  • Neodymium iron boron permanent magnets with a high flux density reduce rotor size
  • Advanced magnetic circuitry and optimum winding geometry deliver very low cogging torque
  • Safety rated at  SIL 3 (IEC 61508)
  • IP67 rated for resistance to dust, water washdown
  • Functions in temperatures above 60oC, altitudes above 2000 ft.
  • Runs 20% cooler than previous generation products
  • Holding Brake and Shaft Seal options available

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