Belparts ZX130 9290597 Hydraulic Main Pump For Hitachi Excavator Pump Assembly

List of spare parts

The hydraulic pump is the heart of an excavator’s hydraulic system, directly impacting performance and efficiency. Understanding its working principle, structure, and maintenance requirements helps in maximizing productivity and minimizing downtime. Investing in high-quality hydraulic pumps and following proper servicing protocols ensures long-term reliability in demanding construction environments.

The hydraulic pump operates based on the principle of positive displacement, where mechanical force (from the engine) drives the pump to create fluid flow. The key steps in its operation include:

• Suction Phase: As the pump’s internal mechanism (e.g., gears, pistons, or vanes) rotates, it creates a vacuum that draws hydraulic fluid from the reservoir.

• Compression Phase: The trapped fluid is pressurized as the pump’s moving parts reduce the chamber volume, forcing the fluid into the hydraulic system.

• Discharge Phase: The high-pressure fluid is delivered to control valves, cylinders, or motors to perform mechanical work.

Common types of hydraulic pumps used in excavators include:

• Gear Pumps – Simple, cost-effective, and suitable for medium-pressure applications.

• Piston Pumps – High efficiency and pressure capability, ideal for heavy-duty excavators.

• Vane Pumps – Provide smooth flow with moderate pressure, often used in compact excavators.

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FAQ:

• What is the warranty time of the products?
  The warranty time is 6/12 months based on the item details; We don't provide warranty time for original and used products.
  2.What is your delivery time?
  Generally, we will arrange the goods within 24 hours after your payment; if not in stock, stocking time is 1-7 days.
  3.What are your main products ?
  We are specialized in spare parts for excavator hydraulic system, such as travel/swing motor, travel/swing gearbox/parts, hydraulic pump/parts,gear parts,etc.If you need other excavator parts, we also can supply as your requirements.
  4.How can I do if there is something wrong with the goods?
  First at all, we have confidence in the quality of our products, if you really found something wrong, please provide pictures or video for us and we will check. After it is confirmed, please return the goods to us and we will offer the correct item.
  5.How do I pay?
  You can pay by T/T,PayPal (for small amount) and Alibaba trade assurance.