Shandong Shengyue Technology Development Co.,Ltd is one of the most professional rexroth axial piston variable pump hydraulic control valve a11vo40 a11vo60 manufacturers and suppliers in China. Please feel free to buy high quality genuine auto parts at competitive price from our factory.
Rexroth axial piston variable pump Hydraulic control valve A11VO40 A11VO60
Product Features
1. Stepless Variable Output (On-Demand Oil Supply): With rotational speed held constant, the output flow can be continuously adjusted from zero to maximum. Oil is supplied exactly as required by the system, eliminating energy waste caused by high-pressure relief at the source.
2. Constant Power Control (Anti-Stall): When external load pressure spikes, the pump automatically reduces flow to maintain constant power (Pressure × Flow). This maximizes the power source's output while preventing the electric motor or diesel engine from stalling due to overload.
3. Load Sensing (Energy-Saving Standby): Real-time sensing of the pressure and flow requirements of actuators. During periods of inactivity or standby, the pump automatically adjusts displacement to near-zero, drastically reducing system heat generation and fuel or electricity consumption.
4. Constant Pressure Cut-off (Safety & Pressure Maintenance): When system pressure reaches the set limit, the pump does not rely on a relief valve to vent pressure; instead, it directly shifts displacement to zero. It maintains system high pressure and provides minimal lubrication, ensuring high-pressure protection and pressure stability.
Typical Application Scenarios
1. Construction Machinery: Excavators, rotary drilling rigs, concrete pump trucks, and cranes.
Serving as the main hydraulic pump for the equipment, it controls heavy-duty excavation, high-altitude pumping, and millimeter-precision lifting, ensuring powerful operation without stalling the engine.
2. Mining and Road Construction Machinery: Mining dump trucks, roadheaders, down-the-hole (DTH) drill rigs, and shield tunneling machines.
Provides high-pressure power for functions such as dump bed lifting, cutterhead rotation, and heavy-load travel, ensuring reliable performance in dusty, high-vibration environments.
3. Heavy-Duty Industrial Hydraulic Stations: Hydraulic presses, forging presses, and injection molding machines.
Delivers sustained high-pressure "holding" for several minutes during metal forging or mold forming, and automatically shifts to "zero-stroke" (neutral) mode during standby to achieve ultra-low energy consumption.
Relevant Model Numbers: A11VO40, A11VO60; LRDS, DRS, LRDU1/LRDU2, LRDH1/LRDH2, LE1S/LE2S, DR, DRL, DRG, EP2D/EP6D; A11VO75, A11VO95, A11VO130, A11VO145, A11VLO190, A11VLO260.
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