283-6116 266-7944 194-8383 123-2229 311-9541 272-6959 Hydraulic Pump Main Pump

Product Specification

283-6116 266-7944 194-8383 123-2229 311-9541 272-6959 Hydraulic Pump Main Pump Assembly Piston Pump E320D E330C E330D Excavator

Product Description

The hydraulic pump assembly of GVO brand for the main pump of the E320D E330C E330D excavator is compatible with the model hydraulic pump components. It features high-quality performance.

The products are directly supplied from the manufacturer without any middlemen adding extra prices. The cost performance is far superior to similar products. There is an ample stock of goods in stock, and once you place an order, the order will be quickly processed and dispatched. There is no need for long waiting periods.

The entire machine undergoes strict pressure testing upon leaving the factory, ensuring stable quality. At the same time, we provide comprehensive after-sales warranty, and the technical team will follow up throughout the process. Maintenance inquiries can be responded to at any time.

Product Description

This hydraulic main pump is the power core assembly of the hydraulic system for E320D, E330C, and E330D excavators. As the hydraulic power source of the entire machine, it converts the mechanical energy output by the engine into high-pressure hydraulic energy, and supplies high-pressure oil to the arm, boom, bucket, slewing mechanism, and traveling motor. The entire machine's digging power, action response speed, coordination of compound actions, and power matching performance of the entire machine all rely on the stable operation of the hydraulic pump.

This hydraulic pump adopts an integrated casting structure of a double-acting piston pump. The pump housing is cast as a whole using high-strength alloy cast iron, and undergoes aging treatment to eliminate internal stress, which can withstand long-term high-pressure impact and is less likely to have problems such as shell deformation or cracking. The core friction pairs such as the cylinder body, piston, flow distributor, and swing mechanism are all made of high-maintenance alloy materials, which are precisely forged and undergo multiple grinding processes. The parting clearance is strictly controlled to effectively reduce internal volume loss under high-pressure conditions, maintain a high volumetric efficiency, and slow down the aggravation of internal leakage over a long period of operation.

The pump body integrates an electronically controlled variable regulation mechanism with an electromagnetic valve. It can change the pump's displacement output in real time based on the electronic control signal, and can dynamically adjust the flow output according to the load conditions. It perfectly matches the negative flow control system of the entire machine, achieving a reasonable power matching between the engine and the hydraulic pump, avoiding severe speed reduction or drop-off during heavy-load operations, and balancing the equipment's operation output and fuel consumption performance. It is suitable for high-intensity construction scenarios such as mining quarrying, heavy-load earthwork, and loading.

Packaging And Transportation

Company Introduction

The GVO brand is a professional manufacturer of hydraulic components. Its product line is comprehensive, mainly including pilot pumps, gear pumps, relief valves and safety valves, piston hydraulic pumps, various electrical components and hydraulic accessories. It also supplies engine assemblies, traveling assemblies, rotating assemblies, distribution valves and other complete vehicle components of excavators.

We adhere to the factory direct supply model, eliminating all middleman links and without any layer-by-layer price hikes. As a source manufacturer, we strictly control every production process and adhere to the quality bottom line. We will never damage the brand reputation for short-term interests. While ensuring first-class quality, we offer customers highly competitive factory prices, sufficient in-stock, stable and efficient delivery.

We treat every partner sincerely and build a full-process service system: providing model matching and working condition selection technical support before sales; following up on order progress during sales to ensure on-time delivery; responding quickly to fault inquiries and quality assurance services after sales. All problems will be handled efficiently and properly. If you have any needs, we are always on standby and dedicated to protecting you.