Bosch A8VO200 Twin-head pump

Bosch Rexroth A8VO200 Tandem Variable Displacement Piston Pump The Bosch Rexroth **A8VO200** series tandem pump serves as the "power core" of hydraulic systems in construction machinery. It is widely used in 30-40 ton class heavy-duty hydraulic excavators (such as those from Caterpillar, Hyundai, XCMG, etc.). Renowned for its exceptional volumetric efficiency, precise flow control, and superior load response, this pump assembly perfectly balances the demands of simultaneous multi-function operations under complex working conditions. Technical Specifications and Key Advantages * **Model Characteristics:** A8VO series (optimized for excavator travel and swing operations); "200" indicates the displacement ($200 \text{ ml/r}$). * **Key Advantages:** * **Tandem Drive:** Features an integrated design where the main and auxiliary pumps work in precise coordination to provide independent flow control for various hydraulic circuits (e.g., boom, arm, travel, and swing). * **Load-Sensing Control:** Equipped with a high-performance load-sensing (LS) control valve that detects load pressure demands in real-time and automatically adjusts displacement; this significantly reduces relief losses during non-operational periods and saves fuel. * **High-Pressure Fatigue Resistance:** The pump housing and internal rotating components are made of high-strength alloy materials subjected to rigorous heat treatment, enabling stable operation at system pressures of up to $350-400 \text{ bar}$. * **Precision Flow Distribution:** The piston-and-cylinder block friction pair utilizes special materials with an ultra-low friction coefficient, ensuring excellent resistance to scoring and seizure even in environments with extreme temperatures or poor oil conditions. * **Application Suitability:** Ideal for heavy-duty earthmoving operations that require high operational efficiency, smooth movement, and a long service life. About Us Guangzhou Jianming Machinery Equipment Co., Ltd. is an expert in the field of mechanical power systems and components, backed by 20 years of solid practical experience. We began as a small machinery repair shop. Over the past two decades, we have accumulated a wealth of experience through successful projects and maintenance work worldwide. Drawing on extensive frontline experience in resolving complex mechanical issues, we have earned widespread global acclaim and grown into a comprehensive enterprise employing over 200 professionals. We deeply understand the challenges equipment faces under extreme operating conditions and possess rich practical experience and expertise in the following areas: * **Hydraulic System Specialists:** We excel in the diagnosis, calibration, and refurbishment of various piston pumps (e.g., Rexroth, Kawasaki, Parker) and operate OEM-standard testing platforms for pressure and flow analysis. * **Integrated Power & Hydraulic Optimization:** Beyond pump repair, we specialize in fine-tuning the synergy between hydraulic systems and engine power, ensuring your excavators deliver high performance while maximizing fuel efficiency. * **Core Component Supply:** We maintain a robust inventory of high-quality key components, including complete piston pump assemblies, cylinder blocks, pistons, valve plates, swash plates, and servo pistons. Our wealth of practical experience and comprehensive supply chain network are our most valuable assets. Whether you are facing complex mechanical challenges or require reliable spare parts, Jianming Machinery has the expertise to ensure your success! Please contact our sales representative, Mr. Zhan. WeChat/WhatsApp: +86 180 2712 4770