Construction machienry similar with mining equipment need always working under large impacting force, constrcution machienry need better accuracy and less noise.

For main transmission system it will use spiral bevel gear and the teeth with grinding process. Gear profile can be Gleason or Klingelnberg type, most of spiral gears we are providing is Gleason type.

Small straight bevel gear also needed for planetary gear set, they will working with the cross shaft as differential spider.