H Series

State of the art heavy duty helical and bevel/helical units using case hardened and ground gears throughout, 8 sizes with capabilities up to 162,000 Nm.


  • Heavy duty design for high torque applications
  • Variety of unit types enables flexibility in design mounting
  • Wide ratio range gives speeds to match design demands
  • Motorised and speed reducer versions
  • Hollow and solid shaft variants allowing design options
  • Custom made units designed specifically for customer's applications

H Series Product Features

  • Fan and water cooling are available as design and selection options to allow greater torques to be transmitted at higher input speeds.
  • Heavy duty taper and spherical roller bearings are used for maximum load capacity and long life.
  • Gear cases are manufactured in close grain cast iron for absorption of vibration and quietness of running.
  • All units are available with the option of output shaft, single or double extension, or hollow output for direct shaft mounting, suitable for all design options.
  • Case hardened and profile ground helical gears with involute thread profile to give maximum power transmission, smooth operation and long life, with maximum efficiency.
  • All units are Atex compliant and can be supplied against Group 2 or 3 for surface industries in designated Hazardous locations, Zones 1 and 2 for gases, vapours and mists and zones 21 and 22 for dust.