The combination with a helical gear stage significantly increases the efficiency compared to pure helical-worm gear units. The linear power transmission makes the worm gear units especially quiet in operation. Why? The force is transferred to the input shaft by the worm shaft and the worm gear, which dampens torque impulses and allows for a lower noise level. The torque ranges from 92 Nm to 4000 Nm.

• Gear units comply with directive 94/9/EC (ATEX), or as of April 20, 2016 of the EU Directive 2014/34/EU (ATEX), equipment group II, category 2, variant II2GD
  • For use on the European market
  • Accepted in China
  • Accepted in Russia in combination with EAC certificates (formerly GOST-R)
• Certified protection types:
  • Protection type “c”: Protected by safe construction (design safety), EN13463-1 and -5
  • Protection type “k”: Protected by liquid immersion, EN13463-1 and -8
• Standardized robust covers as shrink disk covers on the gear unit
• All screws are secured against automatic loosening
• Gear unit has a separate nameplate
• High-quality oil seals
• Lubricant can withstand high temperatures
• Significantly more efficient than pure worm gear units due to helical-worm combinations
• Very low-noise operation