Servo Gearboxes

Servo Gearboxes

Servo Gearboxes – SRP High-Tech Planetary Reducer


SRP is not just another simple planetary gearbox but a true integrated concept, including several functions combined together to offer a complete sub-assembly to the most demanding machines.


  • A high-tech output tapered roller bearing assembly
  • A high-tech planetary gear train, based on REDEX’s differential know-how
  • A ready-to-use universal range of motor interfaces (flanges and shaft adapters)
  • A high quality spiral bevel gear box (option)


SRP is the ultimate high-tech servo-reducer, specially dedicated to designs requiring:

  • Superior torsional stiffness
  • Ultra high radial stiffness and Tilting moment
  • High input speeds
  • Superior acceleration and excellent torque density
  • Minimum backlash (1 – 3 arc-minutes)

The SRP versatile design allows engineers to find an exact application solution, based on its modular design options:

  • 5 different sizes
  • 8 different ratios from 5 to 91:1
  • Two levels of accuracy (1’ or 3’ backlash)
  • In-line or right angle motor mounting versions available in each size
  • Package solution of rack + pinion + reducer is available, including two standard output pinion options for each size