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Integral gear units

Compact and reliable

  • Output: up to 30 MW
  • Speed: up to 50,000 rpm
  • Shaft position: parallel
  • Alignment: horizontal or vertical


Integral gear units stand out for their low space requirement. These gear units are normally single-stage with parallel axes; a number of pinions engage with a central gear. The pinions are arranged either horizontally or vertically offset. Teeth are either single-helical with or without thrust cone or else double helical and consist of tooth sets on horizontal or vertical parallel axes with herringbone teeth, single helical teeth, with or without thrust cones. The high-speed pinions are connected straight - usually positively - to the compressor impellers, which are fitted by our customers.
Integral gear units have from 1 to 4 pinions (in exceptional cases even more). The compression fluid increases from compressor impeller to compressor impeller, which are mounted on both sides of the pinions.
Integral gear units are used mainly for compressing gas, air and oxygen.

Turbo Gear Units

Turbo gearboxes from Illkirch-Graffenstaden

We have been helping to make history and advance the science of mechanical drive technology in our field since 1837. Our perfect mastery of the production of turbo gearboxes is based on the knowhow of the men and women who rise to meet this challenge every day. We design, plan and manufacture gear units that are installed all over the world.