A20VLO190DRS/10R-NZD24N00 A20VLO Series New-Generation Dual Axial Piston Variable Pump

Hengmeisi, a reliable global supplier and professional manufacturing factory focusing on high-end A20VLO190DRS/10R-NZD24N00 A20VLO Series New-Generation Dual Axial Piston Variable Pump, specializes in the R&D and production of the A20VLO190DRS/10R-NZD24N00 to solve the industry pain points of mismatched dual-circuit power, insufficient continuous output stability and high comprehensive energy consumption of traditional large machinery hydraulic systems. The A20VLO190DRS/10R-NZD24N00 belongs to the latest upgraded 10R-generation open-circuit dual axial piston variable pump, adopting a brand-new integrated double pump structure that differs completely from single swashplate and bent-axis hydraulic pumps. It is professionally customized for large-tonnage engineering machinery that requires dual independent hydraulic power supply, high-intensity continuous operation and strict power matching control, filling the market gap of high-stability dual-circuit heavy-duty hydraulic power units.

The quality A20VLO190DRS/10R-NZD24N00 A20VLO Series New-Generation Dual Axial Piston Variable Pump is configured with a standard nominal displacement of 190mL/r per single pump, forming a high-efficiency dual-power combination suitable for 35-65 ton large mobile machinery and heavy industrial hydraulic stations. It supports a rated working pressure of 350bar and a peak instantaneous pressure of 400bar, with outstanding pressure impact resistance and overload tolerance to adapt to frequent heavy-load impact operations. Equipped with classic DRS dual composite hydraulic control technology, the pump integrates constant pressure stabilization and constant power limiting functions. It can automatically sense real-time load changes of dual hydraulic circuits, dynamically adjust single-side and overall pump displacement, stabilize system working pressure under normal operation, and limit total power absorption under heavy-load congestion or overload conditions, effectively preventing engine stalling and hydraulic system overload damage while maximizing construction efficiency.

In terms of structural optimization and environmental adaptability, the A20VLO190DRS/10R-NZD24N00 adopts upgraded 10R heavy-duty reinforced structure, with comprehensive enhancements to internal bearing rigidity, dual-flow channel smoothness and friction pair matching precision compared with old-generation dual pumps. The optimized large-caliber symmetrical oil suction and discharge channels effectively reduce fluid resistance and suppress cavitation and air suction risks during high-speed large-flow operation, raising the overall volumetric efficiency to 94%. Matched with exclusive NZD24N00 customized sealing and dustproof protection system, the pump resists dust erosion, moisture corrosion, high-temperature aging and mechanical vibration in harsh outdoor construction and mining environments. The integrated dual-pump integrated molding structure reduces installation space and transmission failure points, with all flange sizes, spline specifications and oil port positions complying with international standards, realizing plug-and-play seamless replacement without modifying original equipment pipelines and structures.

Core Product Advantages

1. DRS Dual Composite Control for Power & Pressure Stability

The core technical advantage of the A20VLO190DRS/10R-NZD24N00 lies in its mature DRS dual-function composite hydraulic control system, which outperforms single constant-pressure or constant-power pumps in comprehensive adaptability. The built-in constant pressure module maintains precise and stable hydraulic system pressure during conventional equipment operation, eliminating flow pulsation and pressure fluctuation to ensure smooth mechanical action. The constant power limiting module intelligently locks the total power absorption range, automatically reducing pump displacement when encountering sudden heavy loads or pipeline resistance increases to avoid engine overload and power mismatch. Adopting full mechanical hydraulic control without electronic vulnerable parts, it features ultra-fast response, strong anti-interference ability and stable operation, perfectly adapting to high-vibration and complex electromagnetic interference working sites.

2. Integrated Dual-pump Synchronous Output Design

Different from traditional single hydraulic pumps that can only provide single-circuit power, the A20VLO190DRS/10R-NZD24N00 adopts an integrated dual swashplate piston structure, driving two independent hydraulic rotor groups through a single main shaft to realize synchronous dual-circuit power output. The dual-pump symmetrical layout ensures balanced internal force distribution and consistent flow and pressure output of the two circuits, effectively avoiding power deviation and equipment jitter caused by inconsistent dual-pump performance. This structure can independently supply power to the walking system, boom system and rotary system of large excavators, greatly improving the coordination efficiency of multi-action composite operations. The integrated design simplifies equipment assembly structure, reduces overall weight and failure rate, and improves the compactness of mechanical layout.

3. 10R Upgraded Heavy-duty Reinforced Structure

The 10R upgraded heavy-duty structure is a key optimization of the A20VLO190DRS/10R-NZD24N00 for long-cycle heavy-load operation. The internal double-group heavy-duty roller bearing assembly is upgraded with fatigue resistance and impact resistance, capable of withstanding long-term high-frequency pressure impact and strong mechanical vibration of mining and large construction machinery. The thickened integral cast steel pump body enhances structural rigidity and anti-deformation ability, effectively preventing shell cracking and oil leakage caused by long-term vibration. The core piston and cylinder block friction pairs adopt upgraded anti-wear and anti-scuffing precision processing technology, reducing running wear and extending the service life of vulnerable parts. The optimized low-resistance flow channel lowers internal heat generation, solving the common defects of high temperature rise and power attenuation of traditional dual pumps after long-hour continuous operation.

4. NZD24N00 All-weather Sealing & Dustproof Protection

Equipped with professional NZD24N00 customized industrial protection configuration, the A20VLO190DRS/10R-NZD24N00 adopts multi-layer composite high-pressure resistant sealing materials, with excellent high-temperature aging resistance, low-temperature toughness and hydraulic oil corrosion resistance, stably adapting to -40℃ to +125℃ extreme temperature alternating environments. The multi-stage anti-leakage sealing design eliminates internal and external oil leakage risks under long-term high-pressure dual-circuit operation. The enhanced dust-proof and sand-proof structure effectively blocks construction dust, sediment and humid air from entering the pump body, protecting internal precision dual rotor components from abrasion and corrosion. The overall anti-vibration optimization prevents component loosening and performance deviation, ensuring ultra-low failure rate and high stability for all-weather long-cycle construction operation.

Model Code Detailed Explanation

Each segment of the A20VLO190DRS/10R-NZD24N00 model accurately defines the product structure, displacement, control mode, structural version and customized configuration, facilitating quick model selection and precise system matching for global heavy machinery buyers:

Product Structure & Manufacturing Technology

1. Dual Swashplate Symmetrical Variable Structure

The A20VLO190DRS/10R-NZD24N00 adopts a unique dual swashplate symmetrical variable transmission structure exclusive for heavy-duty dual-circuit systems. Two sets of independent high-precision rotor and cylinder block assemblies are arranged symmetrically inside the pump body, driven by a single main shaft to achieve synchronous and coordinated operation. The stepless adjustment of dual swashplate angles realizes flexible displacement changes of the two hydraulic circuits, accurately matching the variable flow and pressure demands of complex mechanical actions. The balanced internal force layout effectively reduces mechanical vibration and flow pulsation during high-power composite operation. All core matching parts are processed by five-axis linkage CNC precision grinding with micron-level assembly gaps, minimizing internal leakage and ensuring consistent and stable dual-circuit hydraulic output.

2. High-strength Anti-fatigue Alloy Processing Technology

All core load-bearing and moving components of the A20VLO190DRS/10R-NZD24N00 are forged from high-purity alloy structural steel, undergoing vacuum carburizing, high-temperature quenching and multiple precision heat treatment processes to achieve balanced ultra-high hardness and structural toughness. The dual-group friction pairs are specially treated for anti-wear and anti-scuffing, resisting long-term high-speed friction and hydraulic impact wear. The thickened integral cast steel shell improves overall structural stability, avoiding deformation and cracking under extreme vibration and impact loads. The upgraded heavy-duty dual bearing group has excellent fatigue resistance, with a design service life far exceeding ordinary single pumps and old-generation dual pumps, fully meeting 24-hour uninterrupted operation requirements of large engineering machinery.

3. Efficient Heat Dissipation & Intelligent Power Matching System

The A20VLO190DRS/10R-NZD24N00 is equipped with an optimized dual-circuit circulating heat dissipation structure, with large-caliber symmetrical flow channels accelerating internal hot oil circulation, effectively reducing pump body temperature rise and avoiding performance attenuation caused by long-term high-temperature accumulation. The built-in DRS composite valve group can dynamically collect dual-circuit load and pressure signals, intelligently balance dual-pump power distribution, avoid single-circuit overload and power waste, and improve the overall energy-saving efficiency of the equipment by 10-12%. The real-time pressure stabilization and overload protection function suppresses hydraulic shock and pressure impact, comprehensively protecting the engine and the entire hydraulic system, and improving the safety and stability of mechanical operation.

Application Scope

Relying on its 190cc high-efficiency dual-pump output, DRS intelligent composite control, 10R heavy-duty vibration-resistant structure and all-weather harsh environment adaptability, the A20VLO190DRS/10R-NZD24N00 is widely applied to core hydraulic power systems of large heavy-duty engineering machinery. It serves as the main hydraulic pump for 35-65 ton large hydraulic excavators, mining excavators and bulk material loading and unloading machinery. It is also perfectly matched with large road construction equipment, heavy-duty piling machinery and stationary high-power hydraulic stations. In addition, it is applicable to port handling machinery, heavy metallurgical equipment and large industrial hydraulic transmission systems, providing stable, high-efficiency and low-consumption long-cycle hydraulic power support for various heavy-load and high-intensity engineering scenarios.

As a professional China manufacturer and supplier specializing in A20VLO series new-generation dual hydraulic pumps, Hengmeisi implements strict full-link quality control. Every A20VLO190DRS/10R-NZD24N00 pump undergoes dual-circuit flow calibration, DRS control accuracy test and long-term high-pressure aging test before delivery, ensuring stable dual-pump performance and 100% interchangeability with original parts. With reliable factory quality, cost-effective pricing and comprehensive after-sales technical support, our products have won wide recognition from global engineering machinery manufacturers and mining enterprises, becoming the preferred replacement and supporting hydraulic component for high-end heavy-duty mechanical equipment.