GVO 576-3072 20R-9516 369-9658 30R-0022 295-9676 Hydraulic Pump Main Pump Assembly Piston Pump E390FL E374F Excavator Parts

GVO 576-3072 20R-9516 369-9658 30R-0022 295-9676 Hydraulic Pump Main Pump Assembly Piston Pump E390FL E374F Excavator Parts

Product Description

The hydraulic pump assembly of GVO brand for the main pump of the E390FL E374F 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 core assembly of the hydraulic power system for E374F and E390FL large-scale mining excavators. As the power heart of the entire hydraulic system, it is responsible for converting the mechanical energy output by the engine into high-pressure hydraulic oil with large flow rate, providing sufficient power oil sources for the boom, bucket arm, bucket, slewing mechanism and traveling motor. All the excavation force, lifting capacity, slewing and traveling movements of the large mining machine are achieved through this main pump. The heavy-load excavation power, smoothness of combined operations, power matching characteristics and fuel performance of the equipment are directly dependent on the operating state of the hydraulic pump.

This hydraulic pump adopts an integrated structure of a high-power dual-axial piston pump. The pump housing is cast as a whole using high-strength alloy cast iron and undergoes sufficient aging and stress-relieving treatment, which can withstand the high-frequency and high-pressure impact of mining conditions for a long time, effectively avoiding risks such as shell deformation and stress cracking. The core friction pairs such as the cylinder body, piston, flow distributor plate, and swing assembly are all made of high-maintenance alloy materials. They are processed through multiple procedures such as forging, heat treatment for strengthening, and high-precision mirror surface grinding, precisely controlling the clearance of each component to minimize internal volume leakage during high-pressure operation, maintaining the pump's volumetric efficiency for a long time, and slowing down the performance degradation caused by long-term heavy-load operation. The pump body is equipped with a complete set of original factory specifications load-sensitive variable regulation mechanism. It can adjust the output displacement of the dual pumps in real time based on the hydraulic load signal, perfectly matching the load-sensitive control system of the entire machine, accurately achieving power matching between the engine and the hydraulic pump, significantly improving the phenomenon of engine stall and speed drop during hard rock excavation, and balancing the powerful excavation torque output and fuel economy, fully adapting to continuous high-intensity operation conditions such as mining stone, large-scale earthwork excavation, and heavy-load 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.