Motion Control

Rossi products, spare parts and accessories

Helical and bevel helical servo gear reducers


  • Wide range of servo gearboxes, designed to fit almost all servo motors found on the market
  • Designed for the highest torsional stiffness and the lowest angular backlash, for the maximum torque and overhung loads
  • Bush with slots and hub clamp for servomotor coupling


  • Enhanced dimensional compactness due to direct servomotor coupling
  • Widest range of possible servomotors coupling dimensions
  • The correct technical solution thanks to a comprehensive range of sizes, gear stages, transmission ratios, designs and non-standard designs

Special Features

Helical and bevel helical servo gear reducers

SR series



Size 8 sizes (40 … 125) 8 sizes (50 … 140)
Accelerating torque


64 … 3,000 N m 140 … 4,400 N m
Transmission ratio i 6.16 … 139 6.42 … 127