YB60000245 9298855 YB60000246 YB60000230 Excavators ZX870-5G HPK300 Hydraulic Gear Pump Pilot Pump Main Pump

GVO YB60000245 9298855 YB60000246 YB60000230 Excavators ZX870-5G HPK300 Hydraulic Gear Pump Pilot Pump Main Pump

Product Description

The hydraulic pump pilot pump of the GVO brand for the main pump of the ZX870-5G HPK300 excavators is suitable for various types of hydraulic components.
High-quality pilot pump, directly sold by the manufacturer without any middlemen profiting from the price difference. Adequate inventory ensures prompt delivery, and the after-sales service is reliable.

Product Description

This meticulously crafted relief valve is specifically designed for the ZX870-5G, a large excavator equipped with the HPK300 hydraulic main pump. It is a crucial pressure safety component in the overall multi-channel control valve system, regulating the maximum working oil pressure of the HPK300 main pump and bearing the responsibility of overloading protection for the entire heavy-duty hydraulic system. As a large-tonnage engineering equipment, the ZX870-5G has long been engaged in mining quarrying, large-scale transportation of earth and rock, hard rock excavation, and heavy-load loading, where the hydraulic oil circuit often experiences extremely strong instantaneous high pressure when the bucket bites hard rocks, the arm lifts heavy loads, and the slewing mechanism starts and stops rapidly.

The valve body is formed by a single piece of high-strength wear-resistant alloy casting. The valve core, pressure regulating spring, pressure-bearing base, and all sets of sealing components are precisely machined according to the parameters of the original factory's HPK300 hydraulic pump relief valve. The flange installation positioning holes, built-in spline structure, oil passage diameter, and sealing groove size are fully compatible with the valve seat of the ZX870-5G multi-channel valve. The processing tolerances of the accessories are rigorous and precise, and the installation holes are precisely matched to the original vehicle base. During maintenance, old parts can be directly replaced in place without the need to grind the valve body or modify the pipe interface, effectively saving the cumbersome dismantling, assembly, and debugging time of large excavators.

The valve body has undergone quenching strengthening and impact resistance treatment. The valve core is made of alloy steel and undergoes multiple fine grinding processes. It is paired with imported-grade sealing gaskets that are resistant to high temperature, high pressure, and hydraulic oil corrosion. It can withstand the long-term scouring of the high-temperature and high-pressure hydraulic oil output by the HPK300 main pump, resisting valve core damage caused by metal debris, sand, and impurity particles in the oil. Even if the equipment is constantly located in a dusty, highly vibrating, and round-the-clock operation mining site, the valve core can still remain sensitive in opening and closing, less likely to experience valve body leakage, pressure drift, valve core jamming and pressure relief failures, and can withstand continuous and excessive workloads of large excavators.

Company Introduction

The GVO brand is a manufacturer of hydraulic components. We mainly produce the most comprehensive range of pilot pumps, gear pumps, relief valves, hydraulic pumps, electrical components, hydraulic parts, engine assemblies, traveling assemblies, rotating assemblies, distribution valves, and other components.

We are factory direct sellers without any middlemen profiting from price differences. The quality is definitely the best for you because we are the ones who produce them. We cannot tarnish our reputation. The prices are also the most favorable for you. There is a stable delivery speed.

We value every customer and provide you with the best service. We offer pre-sale, in-sale, and after-sale guarantees. Any problems will definitely be resolved for you. We are always available to serve you.