Geared Drives » Flender » Gearboxes

Helical Gear Units & Bevel Helical Gear Units

Flender helical and bevel-helical gear unit series for horizontal and vertical installation - single- to four-stage are available in 26 sizes.

Feature Values Unit
Power rating 6 up to 4,500 kW
Torque range Up to 870,000 Nm
Transmission ratio 1 up to 450 [-]


  • Modular construction system =  Multi-purpose use of the housings and internal components
  • Progressive ratio of sizes for optimum selection of size
  • Improved noise behaviour through ground bevel gear teeth and noise-absorbing housings 


  • Motor swing-bases, motor brackets, motor bell housings 
  • Backstops 
  • Heating elements 
  • Water-oil / Air-oil coolers 
  • Speed monitors 
  • Torque reaction arms 
  • Mounting flanges 
  • Gear housing base rails 
  • Gear unit swing-bases 
  • Oil level indicators, Oil level limit switches


  • Aerator drives 
  • Agitator drives and complete drives 
  • Travelling gear drives 
  • Conveyor drives 
  • Hoisting gear drives

Examples of applications

  • Dryer section drives 
  • Water screw drives 
  • Conveyor drives 
  • Bucket elevator drives

Geared Motors

Above gearboxes complete with motor.

As well as many other Flender products...

To view the full range of products manufactured by Flender please click on the website link