High Output Concaves

Ken Graham Engineering Ltd. manufacture high output concaves,(contre-batteurs) for most makes of combine harvesters . Our high output concaves,(contre-batteurs) are manufactured to the highest quality standards .

High output concaves,(contre-batteurs) perform especially well in

  • Wheat
  • Barley
  • Oats
  • Oil seed rape


In 1999 we started to develop a High Output Concave,(contre-batteurs) to deal with the  increasing yields , which were requiring Combine Harvesters to thresh and seperate higher volumes of grain and straw . We launched our High Output Concave,(contre-batteurs)  in 2000 and it proved to be an instant success . Advantages include

  • Faster ground speed 
  • Reduced losses over the straw walkers 
  • Cleaner Sample
  • Less straw breakage
  • Claas Lexion
  • Contre Batteur





Your Name (required)

Your Email (required)

Your Phone Number

Your Message

This is our new store for testing purposes — no orders shall be fulfilled.