Concrete Transit Mixer Piston Eaton pump model Aca 3323 3923 4623 5423 6423 7620 7623 7640 pump and motor HHD 3933 4633 5433 6433 7630  for Heavy Duty Hydrostatic Transmissions.
4623-395 4623-552 4623-553 421AK01299B 6120-032 4623-552 4623-553 4623-647 4623-646 4633-045 5423-518
5423-715 5423-854 5423-873 5433-138 6423-279 6423-533 6423-570 6423-569 6433-042 7620 7630 7640-036
Variable Displacement Axial Piston Mixing/ Mixer Pump
The variable displacement pump provides a flow of high pressure oil. Pump output flow can be varied to obtain the desired
motor output speed. 
Drive shafts: a wide variety of options are available to suit every need.
High strength swash plates on variable pumps and motors: resist deflection under high load.
High strength cast iron housings: provide greater noise damping and wall strength.
High flow check valves in pumps: keep the system primed with minimal pressure drop. 
Technical Data 
Table of values (theoretical values, without efficiency and tolerances; values rounded)