Komatsu PC1800-6 Excavator Hydraulic Main Pump 708-2L-00550 Construction Machinery Parts Aftermarket

The Komatsu D61-12 main control valve is the core control component of the excavator's hydraulic system, responsible for regulating the flow, pressure, and volume of hydraulic oil to achieve precise control of various excavator movements.

The main control valve typically contains multiple spool valves, such as those for the boom, arm, bucket, and travel control valves. Changing the position of these spool valves via a control lever drives the corresponding actuators.

• Boom control valve adjusts the boom's raising, lowering, holding, and regenerating functions
• Arm control valve controls the arm's extension and retraction

• Pressure Rating: Generally supports high-pressure operation up to 350 bar (approximately 5000 psi), meeting heavy-duty requirements
• Flow Rate Adjustment Range: Automatically adjusts flow rate according to load changes, improving system efficiency
• Control Mode: May integrate load-sensitive control technology, dynamically distributing hydraulic power according to the actual needs of the actuators

• Hydraulic Oil Cleanliness: Requires ISO VG46 anti-wear hydraulic oil with a cleanliness level of NAS 7. Replace the filter element regularly
• Inspection Items: Regularly check valve body wear, seal aging, and the flexibility of the spool valve and the accuracy of the pressure setting
• Installation Requirements: During installation, ensure the valve body is securely connected to the oil pipe to prevent leakage, and pay attention to shaft alignment accuracy

Strategically located in Guangzhou's Huangpu District, approximately an hour from Baiyun International Airport, Tieqi has been a dedicated specialist in engineering machinery hydraulics for nearly 15 years.

Driven by our core values of "Pragmatism and Progress," we are committed to delivering practical solutions and upholding our responsibilities. This principle-driven approach defines all our operations and client partnerships.

In China's excavator hydraulic assembly sector, our efficient execution and rigorous approach to manufacturing every product to meet over 95% of original performance specifications have built widespread trust. This has made us a destination for industry peers and clients seeking knowledge and reliable supply, and we take pride in our role of continuously elevating production standards in China.

We are proud to set the standard for hydraulic manufacturing in China, a commitment recognized by our global clientele in the mining, construction, and trading sectors. We invite you to visit our Guangzhou facility to evaluate our quality processes firsthand.

Our capability is backed by a ready inventory of over 500 assembly types, providing access to more than 6,000 different parts. Hydraulic pump, control valve, travel, and swing assemblies are our core products, with a distinct advantage in large mining excavator components and hard-to-find items.

Our 4,000-square-meter factory in Guangzhou is equipped for professional manufacturing, precision assembly, rigorous testing, and quality certification, ensuring reliable performance and timely delivery for every order.

By integrating top-tier Chinese hydraulic brands and supply chains, we provide cost-effective, convenient, and scalable one-stop solutions tailored to diverse machinery and operational needs. Our ability to expertly meet complex client requirements remains a cornerstone of our service.

Our Packaging: For large items, we use sturdy plywood crates secured with metal fasteners for added stability. Inside, the products are cushioned with bubble wrap and secured with wooden braces, while special attention is given to protecting vulnerable parts. Externally, the crates are reinforced with high-strength PET plastic strapping and wrapped in highly waterproof black film. All these measures are taken to ensure that the products reach our customers safely and securely.

• One-stop solution provider for all your hydraulic component needs
• High-quality products at competitive prices
• Exceptional customer service that makes you feel at home
• Large inventory, short delivery times, and long warranty periods
• Professional expertise with accurate part number identification for excavator components