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LDU transmissions-product-category

LDU transmissions

The LDU 20/24 is a U-style hydrostatic transmission with a Z-shaft configuration. It contains a closed-circuit variable-displacement piston pump with direct displacement control (DDC) and a fixed motor. Optimized for performance, size, and cost to meet the demands of today's mobile applications, these transmissions are available with displacements between 20 cm3 and 24 cm3 [1.22 in3 and 1.46 in3].

Features and benefits

  • Easy-to-use design as a complete hydrostatic transmission package for turf care machines and compact utility tractors up to 26 kW [35 PS]
  • Compact design  
  • Single housing with Z-shaft configuration  
  • Bypass valve to allow the vehicle to be towed  
  • Best-in-class efficiency, featuring female piston and male slipper design; overall efficiency of approximately 80% is possible  
  • Improved kit life, higher duty cycle capability while providing the most compact design in this class of hydrostatic transmission  
  • Low trunnion operating force


  • Turf care machines  
  • Compact utility tractors 




cm3 [in3]   

Max. working pressure    

bar [psi]  

Rated input speed   


Torque at maximum displacement (theoretical) 

Nm/bar [lbf-in/1,000 psi]   


20 [1.22] 

300 [4,350] 


0.32 [195.2] 


24 [1.46] 

300 [4,350] 


0.38 [234.2] 

For more information, see Technical Information.    

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