Extrusion Gears


"Henschel stands for high operational reliability, because we are autonomous and produce what is crucial for the realization of this ambition."
Stefan Knieling
Head of Extrusion Gears

Parallel twin-srew counter-rotation

Power divider with two pair of gears (comparable with double helical gears) counter-rotation, reaches a torque factor of up to 40 Nm/cm³.

The DURUMAX® TPM 3 DOS-V extruder gearbox of Henschel Antriebstechnik offers the extrusion manufacturer high technology on the newest state of the art technology. In the global market the TPM 3 DOS-V has asserted itself against the hardest competition and is meanwhile the most widely used counter-rotating extruder gearbox.

Outstanding Characteristics: 

  • High "power density" with all used center distances
  • Modular and suitable design 
  • High efficiency by reduction of the rotary parts
  • Exceptionally high operational safety
  • Torque ratings determined by the customers and market requirements
  • Excellent price-performance ratio

The technical concept of the TPM 3 DOS-V series consists of a reduction gearbox and a distribution gearbox. Both gearbox modules are connected by the thrust bearing housing.

In contrast to the TPM 3 series the distribution of the torque occurs with the DOS gears in the distribution step with two pairs of gears like a double helical gear.

The gearbox can be driven directly by a motor or with a belt at the Input shaft. In the multi-stage helical gearbox, the speed is reduced and the required torque is created. This torque is transmitted in the distribution gearbox to the two counter-rotating output shafts.

The axial forces resulting from the extrusion process are absorbed by thrust bearings inside the thrust  bearing housing.