推土机 Komatsu D37EX 的 液压泵 Komatsu 720-2M-00081

The 720-2M-00081 is a high-performance variable-displacement piston pump designed to provide hydraulic power for the work equipment (such as blade lifting and tilting) and steering systems of D37 series bulldozers.

Technical Highlights:

Load-Sensing Responsiveness: The pump integrates with the main control valve via a built-in load-sensing (LS) valve. When the operator engages the blade to cut into hard soil, the pump instantly detects pressure changes and increases displacement to deliver greater cutting force.

High-Pressure Energy-Saving Logic: During non-operational periods (neutral state), the pump reduces the swashplate angle to minimize flow output, thereby significantly reducing engine power consumption and hydraulic fluid temperature.

Durability for Mining and Construction Sites: Featuring Komatsu's original reinforced design, the valve plate and rotating group offer exceptional vibration and shock resistance, enabling the pump to withstand the frequent load fluctuations inherent in bulldozing operations.

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!