Mechanical Drive Technology

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PHT by esco



Parallel hybrid transmissions (PHT) are to drive the traditional combustion engine for primary driveline and as secondary alternative drive an important electric power. Advantage of ratio possibilities to PTO/PTI.

Units are easy to be mounted between diesel engine and standard marine gearbox or transmission with input or output SAE connections. Also customized connections for marine and industrial applications are possible.


  • Temperature sensor
  • Speed sensor
  • Oil level sensor
  • Oil circulation pump kit
  • Electric drive package
  • Possibilities for specific connections to flywheel and main transmission
  • Several installation possibilities
  • Different reduction / speed increase ratios to PTO/PTI


  • Universally applicable in industry and marine applications


  • esco
Technical Data
Model PHT PHT300A PHT420A PHT700A
Max. Input Torque [Nm] 1.500 1.800 2.800
Max. Output Torque [Nm] 1.800 2.500 3.100
Max. PTO/PTI Input/Output Torque [Nm] 1.500 1.500 1.500
Ratio to PTO / PTI 1:1,47 - 1,7 1:1,47 - 1,7 1:1,47 - 1,7
SAE Input 2 - 3 - 11,5" 1 - 14" 1 - 14"