Power Transmission Division

PMCI - Travel Drives with integrated Motor

PMP Industries is a global manufacturer of efficient and durable travel drives with integrated motors for heavy duty applications.

PMCI drive models integrate two position - two displacement motors into solid planetary gearboxes. These units feature integrated counterbalance valves for operation in open circuit, integrated relief valves and displacement change valve systems. These technical solutions  make the PMCI integrated travel drives the ideal solution for hydraulic excavators from 6 to 50 tons, as maximum output torques of the different models range from 10.000 Nm to 100.000 Nm.

Besides excavators, the PMCI drives with higher reduction ratios can be used on several applications: travel drives for mobile crawler cranes, crushers, platform boom-lifts, soil compactors, pavers, etc. Thanks to the compact and effective design that integrates motor and gearbox on the PMCI models, the use of expensive fully variable motors can often be avoided.
 

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PMCI - Gearbox and Motor

Specifications

  PMCI 1.200 PMCI 1.500 PMCI 2.000 PMCI 2.500 PMCI 4.000
Available ratios 42-54 36-46 67-80 43-62 73
Max output torque [Nm] 12000 15000 20000 25000 40000
Displacement Max [cc] 55 55 55 72 110
Max Pressure [bar] 350 350 350 350 350
Park brake Torque [Nm] 140 140 140 140 335
Weight [kg] 80 90 100 143 255
  PMCI 4.500 PMCI 6.000 PMCI 9.000 PMCI 11.000  
Available ratios 76-88 66-100 76-153 90-230  
Max output torque [Nm] 45000 62000 90000 110000  
Displacement Max [cc] 110 180 180 180  
Max Pressure [bar] 350 350 350 450  
Park brake Torque [Nm] 335 600 800 800  
Weight [kg] 260 370 495 505  

 

Features

 

  • Efficiency and Compact Design
  • High pressure technology increases the efficiency of the hydraulic system
  • Single or Dual speed motors with integrated counterbalance valve and relief valves
  • Hydraulic brake directly applied on the motor
  • Automatic speed change available upon request
  • PMP wet disk brake patented technology
  • Lower working temperature, higher system efficiency
  • Working temperature range – 40°C / + 110°C

 

Reliability and Durability

 

  • Low displacement, high pressure motors for longer life of critical components and increased durability of the entire system
  • Full Bronze cylinder sleeves on rotating block
  • Bimetallic (Bronze/Steel) distribution plate
  • Rotary group with differential spring system which increases motor life
  • Gearbox main seal with triple seal system: mechanical labyrinth, v-ring seal, main oil seal
  • Main seal easily replaceable without gearbox disassembly
  • Gearbox main bearing made of a single part, easily replaceable, fully supplied with pre-set load