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Helical Worm Gearboxes – CB

Helical Worm Gearboxes, as the name suggests, are worm gearboxes complemented by a helical pre-stage reduction. The reduced input speed to the worm gears increases lifetime and torque capacity.


  • Helical Worm Gearboxes
  • Ratios up to 618:1
  • Torque up to 1000 Nm
  • Input power up to 2.62 kW
  • Various mounting options
  • Accepts standard IEC Flange and Shaft

When designing this range of gearboxes, STM Team engineers decided to design one single body to include all gears. This solution allows an efficient heat dissipation as well as a high housing rigidity. Efficiency is improved in addition to increased lifetime.

If you are looking for helical worm gearboxes, get in touch today to see what STM UK can do for you!

Essential data:

  • Gear type: Helical / Worm
  • Efficiency: 79%–36%
  • Ratios: 43–620
  • Max torque: 1000 Nm


For further information including Catalogues, Installation Manuals, Parts Lists or 2D/3D drawings please follow the links below:

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Helical Worm Gearboxes

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