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Your advantages

Space-saving installation
thanks to customised tuning of torque and rotational speed in all 7 sizes.

High efficiency
thanks to the helical gear/worm combination. Significantly higher than with pure worm gearboxes.

Low-noise operation
because the linear power transmission to the input shaft dampens the torque impulses.

Explosion-protected bevel gearboxes Explosion-protected SPIROPLAN® right-angle gear units

Particularly powerful: their efficiency is also impressive in the explosion-protected area

These gear units owe their cost-effectiveness to their simple design. Thanks to the customised matching of torque and rotational speed, you can install our worm gearboxes in a space-saving manner. Realise simple requirements in your machine or system applications cost-effectively with the S series gear units.

The combination with a spur gear stage enables a significantly higher efficiency than with pure worm gearboxes. Thanks to the linear power transmission, these helical worm gearboxes are particularly running smoothness and low noise. Why? The force is transmitted to the input shaft via the worm shaft and worm gear, which dampens torque pulses and ensures a low noise level. The torque range extends from 92 Nm to 4,000 Nm.

Only half the solution without a motor? Then take advantage of our sophisticated modular system and combine the explosion-protected gear units of the S series with a explosion-protected motor of your choice.
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Directives and standards worldwide TorqLOC® hollow shaft mounting system Surface and corrosion protection Adapters Extended Warranty Lubricants DUO diagnostic unit Find out more
  • Gear unit complies with Directive 94/9/EC (ATEX), or from 20 April 2016 the EU Directive 2014/34/EU (ATEX), equipment group II, equipment category 2, design II2GD
    • for use in the European market
    • accepted in China
    • Accepted in Russia in connection with EAC certificates (successor to GOST-R)
  • certified protection types:
    • Protection type "c": Protection by safe design (constructive safety) EN13463-1 and -5
    • Protection type "k": Protection by liquid encapsulation EN13463-1 and -8
  • Standard-compliant impact-resistant bonnets as shrink disc covers on the gear unit
  • All screws are additionally secured against automatic loosening
  • gear unit has a separate nameplate
  • High-quality oil seals
  • High temperature resistance of the lubricant
  • Significantly better efficiency than pure worm gearboxes due to helical gear/worm combinations
  • particularly quiet rotor
  • possible designs:
    • Foot or flange-mounted design
    • B5 or B14 flange-mounted design
    • Full wave or hollow shaft
    • Hollow shaft with keyway connection, shrink disc, splined hollow shaft or TorqLOC®

Explosion-protected series S / sizes 37 / 47 / 57 / 67 / 77 / 87 / 97
Gear unit ratio i 6.80 - 288.00
Gear unit ratio Double gear unit i 110 - 33 818
Max. Output torque Nm 92 - 4 000
Motor power range (attachment via motor adapter AM) kW 0.12 - 30
  • in potentially explosive applications with air-gas or air-dust mixtures in accordance with Directive 94/9/EC (ATEX) or, from 20 April 2016, EU Directive 2014/34/EU (ATEX)
  • Equipment category II2GD
  • Use with air mixtures
    • with gases (G): in zones 1 and 2
    • with dusts (D): in zones 21 and 22
  • Examples:
    • Automotive industry
    • Beverage and food industry
    • Intralogistics
    • Wood, construction and building materials industry
    • Chemical/pharmaceutical industry
    • Special applications, e.g. biogas plants