Optimised solutions for complex motion cycles

Helical worm gear units are used to safely lift and lower loads and are ideally suited for applications in continuous duty. The combination of a worm gearing with an upstream helical gear stage provide the advantages of both gearing types.

helical worm gear by AUMA Drives / GFC

On the one hand, the two stages allow for large transmission ratio ranges, on the other hand, it combines high efficiency levels and torques with highest lifetime and reliability within a compact drive. This is extremely efficient in terms of space, cost and reduced maintenance efforts.

AUMA Drives helical worm gear units are operable in both rotation directions. Our helical worm gear units are provided for many connection and fastening options.

The models are available in sizes 50, 63, 80, 100, 125 and 160. Technical data on each size is provided on request.

The basic variant type SSVA can be extended by drive
and motor flanges, covers and many further options,
such as slip-on output drive shafts.


design features
  • worm wheel set according to DIN 3975 flank shape ZK, worm shaft made of 16MnCrS5, case-hardened and grinded
  • worm wheel made of highly wear resistant special bronze
  • Lubrication: fully synthetic oil for highest efficiency and reduced maintenance
  • quality roller bearings for highest lifetime and absorption of external forces
  • more than 20 standard transmission ratios per size
  • type SSVA: solid shaft at input, hollow shaft at output
  • type SS_V: solid shaft with free shaft ends on one or both sides
  • type SS_VF / SS_AF: output drive flange with solid shaft or hollow shaft
  • type SSK: coupling flanges for IEC motors
  • torque reaction lever
  • covers for protection against contamination and corrosion as well as against direct touching
  • coupling flanges for IEC motors
  • direct motor installation (Type SSM__ – with drive pinion on motor shaft) for confined spaces
  • output drive flange
  • output shafts (with free shaft ends on one or both sides), axially secured by circlip and washer or via shrink disc
  • left-handed version
integration into other systems
  • AUMA Drives helical worm gear units are compatible with operating plants of types: B3, B8, B6, B3I, V5, V5II
  • adjustment of lubricant quantities, positions of air vent and oil draining plugs according to the selected mounting position
  • integration into the installation plant (depending on the type) as slip-on gear, with torque reaction levers or flanges
  • axial security of slip-on-gears within the gear hollow shaft both through end disc and circlip or via shrink disc
protection from environmetal influences
  • high-quality surface corrosion protection according to ISO 12944-2
  • protection from mechanical shocks and harsh environments by housing material grey cast iron with lamellar graphite (GJL), spheroidal cast iron (GJS) upon request
  • as an option, radial seals with dust lips (form AS) made of Viton as spray water and dust protection
  • wide ambient temperature ranges

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You can also reach us by E-Mail at Inquiries.drv@auma.com or by telephone at +49 3523 9460.