مضخة هيدروليكية Caterpillar E330D2 272-6955 SBS140E لـ آلات البناء Caterpillar

The hydraulic pump featured in the E330D2 is a classic Caterpillar load-sensing piston pump, utilizing "flow-on-demand" logic as its core control mechanism. Beyond driving excavation operations, the pump—through sophisticated electronic-hydraulic integration—also powers the machine's swing and travel functions.

Intelligent Power Management (IPM): The pump communicates extensively with the Engine Control Module (ECM). When engine speed (RPM) drops due to heavy loads, the pump reduces displacement in real-time to prevent engine stall and ensure smooth operation.

High-Response Pressure Cut-off: Upon reaching the rated pressure of 350 bar, the pump executes an ultra-fast cut-off response; this effectively prevents pressure spikes, protecting hydraulic lines and work tools from the impact of transient high-pressure surges.

Heavy-Duty Capability: Engineered for the operating environment of a 30-ton class excavator, the pump assembly features enhanced wear resistance in its swashplate materials, enabling it to withstand the heat and frictional wear associated with prolonged high-pressure operation.

Guangzhou Jianming Machinery Equipment Co., Ltd.

With 20 years of solid practical experience, we are experts in the field of machinery power systems and components.

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. Thanks to our hands-on experience in solving complex mechanical issues, we have earned widespread acclaim and grown into a comprehensive enterprise employing over 200 professionals.

We deeply understand the challenges equipment faces under extreme conditions and possess extensive practical experience and expertise in the following areas:

Heavy Machinery Power Upgrades and Retrofitting: We provide customized engine retrofitting and replacement solutions for excavators, bulldozers, loaders, and other heavy equipment. We are proficient in major power systems, including brands such as Caterpillar, Kobelco, Yanmar, Cummins, Isuzu, Perkins, Deutz, and Volvo.

Mining Equipment Maintenance and Optimization: We offer professional repair, maintenance, and power optimization strategies specifically designed for heavy-duty mining equipment operating under high-load conditions.

Agricultural and Irrigation System Solutions: We assist farms in the efficient design and assembly of irrigation systems, as well as in troubleshooting and upgrading power units for various types of agricultural machinery.

Leveraging our extensive technical expertise, we are also a robust supplier of spare parts:

Comprehensive Machinery Parts Supply: With our deep understanding of maintenance, we prioritize quality above all else. We offer a wide, carefully curated range of parts for excavators and heavy machinery—covering hydraulic systems, fuel systems, internal engine components, and electrical systems—to meet all your one-stop procurement needs.

Our wealth of practical experience and robust supply chain system are our most valuable assets. Whether you are facing complex mechanical challenges or require reliable spare parts, Jianming Machinery has the expertise to help you succeed!