Helical worm gearboxes – RA Series

Helical worm gearboxes – RA Series

  • Sizes: RA28 to RA150
  • Available versions: 2-stage helical worm gearboxes, designed for higher reduction ratios beyond those achievable with a single worm gearbox
  • Casing: Die-cast aluminum housing (for the pre-stage and up to size 85 of the RS gearbox), grey cast iron (sizes 110, 130, 150 of the RS gearbox)
  • Power: Up to 8.4 kW (1400 rpm) / 11.3 HP (1800 rpm)
  • Torque range: Up to 2,860 Nm / 25,310 in-lb
  • Gear ratios: 25:1 to 800:1
  • Backlash: 10’-15’ angular backlash
  • Efficiency: Optimized for high reduction applications with lifetime synthetic oil lubrication
  • Degree of protection: Available with specialized oil seals and safety shields
  • Load capacity: Verified according to international standards
  • Accessories: Output shafts (single AS, double AD), oil seals (input VIT/E, output VIT/U), shaft mountings (PC-PC, PA, PB), torque arms (standard BR, Vulkollan BRV), safety shield (ASC), non-standard output bearings (CS), motor flanges (FM), output flanges (FL, FA, FB, FR), coupling (G), torque limiters (outer TLE, inner TLI), travel limiters (SLP, SLS), feet (S, SA, I, IA, D, DA), worm shaft extension (VB)
  • Output options: Simple or double output shafts, optional torque arms, and shaft mountings
  • Motor input options: Solid shaft input, E-motor coupling input, compatible with: 1. IEC asynchronous motors: BN, BE, BX., 2. Compact asynchronous motors: M, ME, MX., 3. Reluctance motors: BSR, 4. Single-phase motors: BS
  • Motor options: Thermistors and thermostat sensors, Independent forced cooling, Incremental sin/cos absolute single/multi-turn encoders, Tropicalization, Anti-condensation heaters
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