400910-00419 400910-00138A Hydraulic Gear Pump Pilot Pump Assembly Steering Pump

Product Specification

400910-00419 400910-00138A Hydraulic Gear Pump Pilot Pump Assembly Steering Pump DX140W DH150W-7 DX160W DX170W Excavator Parts

Product Description

The hydraulic pump pre-control pump of the GVO brand's hydraulic power DX140W DH150W-7 DX160W DX170W excavator main pump is suitable for various types of hydraulic components.
High-quality pilot pump, direct sales from the manufacturer, prompt delivery, and reliable after-sales service.

Product Description

This dual-gear pump is specifically designed for the DX140W, DH150W-7, DX160W, and DX170W wheel excavators as a hydraulic auxiliary supply component. It mainly undertakes the supply of oil for the pilot control circuit and the steering assist circuit, and is a key hydraulic component that ensures the lightness of the wheel excavator's steering and the sensitivity of the handle operation. 

The pump body shell is made by a single-piece die-casting of high-strength aerospace-grade aluminum alloy, which is lightweight overall while maintaining excellent structural rigidity. It can resist deformation and cracking caused by operational vibrations, and the internal transmission gears are made of alloy steel that has undergone dual heat treatment processes of quenching and carburizing. The gear teeth are precisely ground and processed by a high-precision CNC grinder, with strict control of the gear meshing clearance, significantly reducing internal oil leakage under high-pressure conditions and maintaining stable volumetric efficiency for a long time. To address the common problem of internal leakage and pressure drop of the pump body during long-term operation of wheel excavators due to increased hydraulic oil temperature, the product has re-optimized the internal oil flow path of the pump chamber, reducing the vortex resistance caused by oil flow and accelerating heat dissipation. Even in harsh conditions such as continuous construction in high-temperature summers and repeated steering and heavy-load operations, the gear pump can still output stable flow without experiencing adverse phenomena such as high-temperature pressure relief or sluggish actions. The dimensions of the drive shaft, flange installation holes, and oil inlet and outlet ports are strictly in accordance with the original factory standards. The shaft core has high concentricity, and the transmission force is distributed evenly, effectively avoiding installation problems such as spline wear, broken shafts, and inability to install screws due to misaligned screw hole positions. This helps to significantly reduce equipment downtime for maintenance and minimize additional losses caused by installation errors.

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.