We have been getting it right for more than 100 years

The story of our success began at the onset of the last century. 1904 Gerhard Kestermann founded Kestermann Zahnräder- und Maschinenfabrik KG in Bochum, Germany and in 1910 Alfons Jahnel founded Jahnel GmbH in Bochum, Germany. 1933 Gustav Wolff, the owner of Eisengießerei Bochum, purchased Jahnel and 1981 the companies Kestermann and Jahnel merged into one formidable enterprise Jahnel-Kestermann GmbH.

2011 the company Jahnel-Kestermann was taken over by Hyundai Heavy Industries and is now a member of HHI Group.

The foremost milestones in our company's history:

• 2011
  Supply of test bench gearboxes with  6500 kW drive power in FlexPin-design.
  
  Cutter head and winch gearboxes for large cutter-head dredger with 205 and 100 tons gearbox weight
  
  
• 2010
  Market launch of a new, innovative compact gearbox for wind-energy plant
  
  
• 2008
  Construction of test bench gearboxes
  
  
• 2007
  One-motor propeller gearboxes with 18500 kW drive power and 80 tons weight for Jumbo Hopper Dredger „Cristobal Colon“
  
  
• 2006
  Pinion gearbox with drive power  P = 1440 kW and a weight of 66 tons
  
  
• 2004
  Two-stage planetary gears for water turbines at 15000 kW with 11 double helical geared planet wheels
  
  2 propeller gearboxes for MRV Vessel „Canterbury“ each with 3 multiple-disc couplings
  
  
• 2004
  Gearbox for roll carrier, P 300 kW for mining industry
  
  
• 2004
  Two-stage planetary gears for water turbines at 15000 kW with 11 double helical geared planet wheels
  
  
• 2003
  Dredge pump gearbox for underwater use
  
  
• 2002
  Gearboxes for underwater turbines and tidal power station
  
  
• 2001
  Cutter-head gearbox with 225 tons for largest cutter-head gearbox in the world
  
  Centrifuge gearbox T2  16000 Nm and n2 2000 rpm
  
  
• 2000
  Dredge-pump gearbox with 8000 kW and propeller gearbox with 14000 kW drive power for the largest suction dredger in the world
  
  
• 1998
  Patent registered for planetary gears in wind power systems
  
  
• 1997
  Spiral gearing in planetary steps
  
  
• 1995
  Construction and supply of the large gearboxes for open pit mining

• 1994
  The largest agitator drives  2500 kW for producing polypropylene (PP) and polyvinyl chloride (PVC)
  
  
• 1990
  Construction and supply of the first gearboxes for sugar  industry

• 1988
  Straight bevel gear pairs, spur-toothed wheel and planetary gears to 5000 kW were developed for mill drives (for cement, marble and fillers)
  
  
• 1988
  Construction and supply of the first gearboxes for wind industry

• 1986
  The largest cutter head gear in the world (4400 kW/125000 kg)
  
  
• 1985
  The largest gears for bucket wheel excavators for European mining (2 x 630 kW/40000 kg)
  
  
• 1985
  Construction and supply of special gearboxes for chemical industry

• 1984
  Welded design case-hardened spur-toothed wheels were developed
  
  
• 1981
  Jahnel and Kestermann combined their abilities and capacities and improved as Jahnel-Kestermann Getriebewerke their position as manufacturer for special gearboxes
  
  
• 1980
  Planetary gears to 1000 kW were introduced to underground mining
  
  
• 1956
  Construction and supply of the gearboxes for dredging

• 1945
  Construction and supply of the gearboxes for mining
  
  
• 1933
  The owner of Eisengießerei Bochum purchased Jahnel  and Jahnel specialized in heavy-duty gearboxes
  
  
• 1910
  Jahnel was founded as supplier of gears and machines for industrial applications
  
  
• 1904
  Kestermann  was founded as supplier of components for the chemical industry