Reduction stages
Max Power (1400 rpm / 1800 rpm)
8.4 kW / 11.3 HP
Angular Backlash
Reduction Ratios
da 25:1 a 800:1
Max output torque
2860 Nm / 25310 in-lb


  • Input and output oil seals in NBR
  • Housing and covers in die cast aluminium (for the pre-stage and till size 85 of the RS gearbox) and grey cast iron (sizes 110, 130 and 150 of the RS gearbox)
  • Worm wheel in bronze
  • Bearings with ball or conical roller
  • Input flanges in die cast aluminium
  • Motor flexible coupling
  • Gears in cemented and hardened alloy steel
  • Support hub in grey cast iron
  • Synthetic oil for lifetime lubrication of the gears
  • RCA oil seal in NBR
  • Worm shaft in alloy steel
  • Low maintenance and management costs
  • Modular concept
  • Extended lifetime with excellent reliability
  • Easy installation and maintenance
  • Long life lubrication
  • Versatility of use

For Application Sectors

  • Silicone, Viton or special seals for high/low temperatures and food & beverage sector
  • Anodization for chemical and ship-building/marine sectors
  • Special lubricants for high/low temperatures and food & beverage sector
  • Non-standard breather plugs for high/low temperatures
  • Special paint finishes for chemical, ship-building/marine and food & beverage sector
  • ATEX version for potentially explosive environments

For NEMA and servo motors

  • Flanges and couplings for servomotors
  • Output holes in inches
  • Input couplings for NEMA motors
  • Output shafts (simple AS, double AD)
  • Oil seals (input VIT/E and output VIT/U)
  • Shaft mountings (PC-PC, PA and PB)
  • Torque arms (standard BR and Vulkollan BRV)
  • Safety shield (ASC)
  • Output bearings (not standard CS)
  • Motor flanges (FM)
  • Output flanges (FL, FA, FB and FR)
  • Coupling (G)
  • Torque limiters (outer TLE and inner TLI)
  • Travel limiters (SLP and SLS)
  • Feet (S, SA, I, IA, D e DA)
  • Wormshaft extension (VB)



Most of our products are available in an ATEX version that conforms to EU directives on explosive atmospheres.


Want to know more about RA Series?