High-Performance Hydraulic Gear Pumps for Heavy Machinery
Product Details
Our hydraulic gear pumps are engineered to deliver reliable and powerful performance for a wide range of heavy-duty construction and earthmoving equipment. These pumps are essential components for various hydraulic systems, including steering, lifting, and transmission, ensuring smooth and efficient operation even in the most demanding conditions.
We offer a comprehensive selection of hydraulic pumps, each designed for specific applications and machine models. Our products are made with high-quality materials and precision manufacturing to meet or exceed OEM specifications, providing durability and long service life.
Product Parameters
Part Numbers: 705-51-30190, 705-56-26030, 95518-03001, 705-94-01070, 705-52-30190, 705-52-21070, 126-2016 (1262016), 3P6816, 705-56-36051, NAA600D, NCA600, NCA600F, FDS1919, 705-52-32001, 6134-61-1410, 2835992 (283-5992), 705-38-39000, 07433-71103
Material: High-grade cast iron or aluminum alloy
Type: Gear Pump (Main Pump, Pilot Pump, Transmission Pump, Lifting Pump)
Operating Pressure: Varies by model, designed for high-pressure systems
Applicable Machines: Bulldozers, Loaders, Excavators, and more
Key Advantages
Superior Durability: Built to withstand harsh working environments and heavy loads.
Optimal Performance: Ensures efficient fluid transfer and stable pressure for all hydraulic functions.
Precise Fit: Manufactured to OEM standards for seamless integration and installation.
Long-lasting Reliability: Reduces downtime and maintenance costs with a long service life.
Wide Compatibility: A vast range of models compatible with popular machinery brands.

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Applications & Case Studies
Our hydraulic gear pumps are used in a variety of challenging applications, including:
Bulldozing and Earthmoving: Pumps like the 705-51-30190 for D85A-21 and 705-52-21070 for D41P-6 are crucial for controlling the blade's lift and tilt, enabling precise grading and material pushing on construction sites and mines.
Material Handling and Loading: The 705-56-26030 for LW250-5 and 705-56-36051 for WA320 loaders are key to the lifting and tilting of the bucket, facilitating the efficient loading of materials like gravel, sand, and soil into trucks.
Excavation: The 126-2016 pilot pump for Excavator 320C ensures the smooth operation of the boom, arm, and bucket, providing the fine control needed for accurate digging and trenching in urban development and infrastructure projects.
Our pumps have consistently proven their value in these scenarios, helping to maintain machine performance and productivity under continuous heavy use.
---Related Products
In addition to the pumps listed, we also supply a range of other hydraulic components that work in tandem with our gear pumps:
Hydraulic Cylinders: For lifting and pushing applications in excavators and loaders.
Hydraulic Control Valves: Regulate the flow and pressure of fluid to various machine functions.
Hydraulic Filters: To maintain the cleanliness of the hydraulic fluid, protecting the entire system from contamination.
Fan Motor Assembly (e.g., 2835992): Crucial for engine cooling systems on various machinery.
Water Pump Assembly (e.g., 6134-61-1410): An essential part of the engine's cooling system for models like the 4D105-5.
Installation & Maintenance Guide
Common Issues & Solutions:
Noise or Vibrations: Often caused by air cavitation or contamination.
Solution: Check for air leaks in the suction line, ensure proper fluid level, and inspect the inlet filter for clogs. Flush the system to remove contaminants.
Loss of Power or Sluggish Operation: May be due to internal wear, incorrect fluid viscosity, or a faulty relief valve.
Solution: Verify that the correct hydraulic fluid is being used. Inspect the pump for signs of internal leakage. A pressure test can confirm if the pump is failing.
Overheating: Can be caused by a dirty heat exchanger, low fluid level, or a worn pump.
Solution: Clean the heat exchanger fins. Top up the hydraulic fluid. If the issue persists, the pump may need to be replaced due to internal friction from wear.
