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Help CenterChina Hydraulic Tandem Pump for Excavator
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hydraulic tandem pump for excavator
Variable Pumps Axial Piston Units
Variable Displacement Pump for Concrete Mixer Drum Drive
Key Features:
- Sizes 71, 90
- Swashplate design ideal for hydrostatic closed circuit transmission
- Infinitely variable flow -- proportional to drive speed and displacement
- Output flow increases with swashplate swivel angle (from 0 to maximum value)
- Flow direction changes smoothly when swashplate is moved through neutral position
- Two pressure-relief valves on the high pressure ports to protect the hydrostatic transmission (pump and motor) from
- overload
- High-pressure relief valves also function as boost valves
- Integrated boost pump to replenish leakage and provide control oil.
- Built-in boost pressure-relief valve limits maximum boost pressure
Features
– Variable axial piston pump of swashplate design for hydro-static closed circuit transmission
– Flow is proportional to drive speed and displacement and is infinitely variable
– Output flow increases with the swivel angle of the swash-plate from 0 to its maximum value
– Flow direction changes smoothly when the swashplate is moved through the neutral position
– A wide range of highly adaptable control devices is available for different control and regulating functions
– The pump is equipped with two pressure-relief valves on the high pressure ports to protect the hydrostatic transmission
(pump and motor) from overload
– The high-pressure relief valves also function as boost valves
– The integrated boost pump acts as a feed and control oil pump
– The maximum boost pressure is limited by a built-in boost pressure relief valve
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