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EX5500 Crawler excavator parts Hydraulic Pump
,Hitachi Crawler excavator parts Hydraulic Pump
Excavator parts Hydraulic Pump YA00003081 4455484 4424246 For Hitachi EX2500-6 EX5500
The hydraulic pump is a vital component in excavators, converting mechanical power into hydraulic energy to operate cylinders, motors, and other actuators. It ensures efficient power transmission, enabling precise control and high performance in digging, lifting, and material handling appliions.
| PRODUCT DESCRIPTION | ||
| Model: Hitachi EX2500-6 EX5500 hydraulic pump YA00003081 4455484 4424246 4449718 | egory: Hydraulic Pump | |
| Brand: Hitachi | Place of Origin:Other Country | |
| Condition: Original & Oem | Warranty: 12 months | |
| MOQ: 1 pcs | Production Capacity: 1000pcs /Month | |
| Standard or Nonstandard: Standard | Payment Term: L/C,T/T, Western Union, Tradeassurance | |
| Delivery Time: 1-3 days (depend on order) | Means of Transport: By Sea, Air or DHL/FEDEX/TNT/EMS | |
| Guarantee: We will check the Hydraulic main control valve and send detail pictures to buyer to confirm | ||
Working pressure, measured in megapascals (MPa) or bars (bar), indies a pump's maximum output pressure, directly determining the thrust or torque a hydraulic system can generate. Standard gear pumps typically operate at 16-21MPa, while high-performance piston pumps reach 35-42MPa.
Higher pressures enable hydraulic cylinders and motors to generate greater force, allowing excavators to lift heavier loads or dig tougher materials. However, high pressure also demands better seals and piping, increasing leakage risks. Modern excavator hydraulic systems typically operate at 30-35MPa, balancing power and reliability.
Efficiency: The Hidden Factor Affecting Fuel Economy
Hydraulic pump efficiency comprises volumetric and mechanical efficiency. Volumetric efficiency compares actual to theoretical flow rate, primarily affected by internal leakage. Mechanical efficiency measures how much input power converts to hydraulic power, mainly influenced by frictional losses. Combined total efficiency can exceed 90% in quality piston pumps.
Though less visible than displacement or pressure, efficiency significantly impacts excavator fuel consumption. Efficient hydraulic pumps reduce energy loss, lowering engine load and saving fuel. This explains why high-end excavators invest more in high-efficiency piston pumps.
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JThis OEM-quality hydraulic pump fits my machine perfectly, and it runs very well on it.
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