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Your advantages

Greater energy efficiency
thanks to the high efficiency in both directions of torque and at any input speed.

Greater cost-effectiveness
over the entire service life thanks to wear-free gearing and the long maintenance-free service life.

High power rating
In a compact design, a total of 12 sizes offer torques from 200 Nm to 50,000 Nm.

Explosion-protected worm gear units Explosion-protected SPIROPLAN® right-angle gear units

Simply save energy: also possible in potentially explosive atmospheres

Are you looking for a drive solution that can be installed in confined spaces? And which reliably delivers movement in potentially explosive atmospheres?

Then we recommend our explosion-protected bevel gearboxes in equipment category II2GD. These right-angle gear units have torques from 200 Nm to 50,000 Nm and impress with their particularly compact design.

With their high efficiency in both directions of torque and at any input speed, they are also energy-efficient. Their fatigue-resistant gearing is wear-free and lasts the life of the gearbox. And for precise positioning tasks, choose the explosion-protected K gear units in the reduced backlash design.

The long maintenance-free service life amplifies this economy and efficiency. This is why the K series is used in many applications with potentially explosive atmospheres. Worldwide!

Only half the solution without a motor? Then take advantage of our sophisticated modular system and combine the explosion-protected gear units of the K series with a motor. 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

Size K..37 to K..187 explosion-protected (three-stage)
  • Gear unit complies with Directive 94/9/EC (ATEX) or, from 20 April 2016, 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
  • All screws are additionally secured against automatic loosening
  • Gear unit has a separate nameplate
  • High-quality oil seals
  • High temperature resistance of the lubricant
  • High efficiency
  • Durable gearing design
  • Long maintenance-free service life
  • 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®
  • Double gearbox also possible for the lowest output speeds
  • reduced backlash design

K series (three-stage) / sizes 37 / 47 / 57 / 67 / 77 / 87 / 97 / 107 / 127 / 157 / 167 / 187
Gear unit ratio i 3.98 - 197.37
Gear unit ratio Double gearbox i 94 - 32 625
Max. Output torque Nm 200 - 50 000
Motor power range (attachment via motor adapter AM) kW 0.12 - 90
  • 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)
  • Applications with equipment category II2GD
  • Use with air mixtures
    • with gases (G): in zones 1 and 2
    • with dusts (D): in zones 21 and 22
  • Examples:
    • Pallet conveyors
    • Belt conveyors
    • Chain conveyors
    • Vertical drives and lifting stations
    • Goods lifts
    • Travelling and lifting drives in storage/retrieval systems