MAAG KPB Transmission Gear Units

FLSmidth MAAG Gear produces transmission gear units for the bucket wheel drive in excavators. The planetary-bevel KPB transmission gear is expecially designed for drive systems of bucket wheel excavators used in open-pit mining.

KPB in use
  • Technical Description
  • Customer Benefits

Technical Data

The KPB transmission gear unit is the perfect solution for newly designed excavators. However, it can also be employed to upgrade already existing bucket-wheel drives. The KPB gear unit is installed between the electric motor and the bucket wheel shaft. The coupling connects the gearbox input shaft with the electric motor, while the output torque is transmitted to the bucket wheel shaft via the clamping ring. The KPB transmission gear unit is equipped with a monitoring system. It is also fitted with a lubrication system (without oil cooler) integrated into the gearbox casing. The gearbox casing also serves as oil tank.

Gearbox description
The two planetary stages consist of spur gears. The rims with internal toothing are in permanent contact with the casing. The planet carrier of the second planetary stage is also used as the output shaft, shaped as a bushing. The toothing of the sun pinions and of the planet wheels is case-hardened and ground, while the rims with internal toothing are tough-hardened. The gearbox rotors are positioned by the roller bearings. 

The casing of the KPB transmission gear unit is a sturdy, welded construction. It consists of the bevel stage casing, two rims with internal toothing, a connector of both rims and an output bearing housing. The torque lever is directly connected to the output bearing housing and to the connector of both rims with internal toothing.

Gear Unit Types  

  • KPB 214-190
  • KPB 194-190
  • KPB 163-186
  • KPB 163-250


Your reasons to choose a KPB transmission gear unit from FLSmidth MAAG Gear

  • Compact design
  • Optimal weight
  • Precision in design and manufacturing, ensuring highest quality
  • Reliable design
  • Gearbox design for application specific requirements and customer needs (made on measure)
  • Lubrication system directly on gear casing
  • High efficiency
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FLSmidth MAAG Gear KPB gear unit for bucket wheel excavator drives
Download brochure