Excavator 4171831101 4171831102 4191851102 4191831102 4191831103 4191831104 4191841102 4191841103 4191841104 Main Pump

We produce and supply Original Brueninghaus Hydromatik Axial Piston Variable Pump Model:  AA4VG28 AA4VG40 AA4VG56 AA4VG71 A4VG90 AA4VG125 AA4VG180 AA4VG250 A4VG pump, and Excavator 417-18-31101 417-18-31102 419-18-31102 419-18-31103 419-18-31104 419-18-41102 419-18-41103 419-18-41104 4191831101 4191831102 4191831103 4191831104 4191851101 4181831104 4171831101 4171831102 4181831101 4181831102 4181831103Features below:1. Variable axial piston pump of swash plate design for hydrostatic closed circuit transmissions2. Flow is proportional to drive speed and displacement and is infinitely variable3. Output flow increases with the swivel angle of the swash plate from 0 to its maximum value4. Flow direction changes smoothly when the swash plate is moved through the neutral position5. A wide range of highly adaptable control devices is available for different control and regulating functions6. The pump is equipped with two pressure-relief valves on the high pressure ports to protect the hydrostatic transmission(pump and motor) from overload7. The high-pressure relief valves also function as boost valves8. The integrated boost pumps acts as a feed and control oil pump9. The maximum boost pressure is limited by a built-in boost pressure relief valve10. The integral pressure cut-off is standard./* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1