4621412 Hitachi ZX55 EX55 ZX60 Excavator PVK-2B-505 Hydraulic Pump Piston Pump Main Pump Assembly

Product Description

The hydraulic pump assembly of GVO brand for the main pump of the Hitachi ZX55 EX55 excavator is compatible with the PVK-2B-505 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 Descriptio

This Hitachi PVK-2B-505 variable displacement piston hydraulic pump is a replacement main pump for the original Hitachi ZX55, EX55, and ZX50U series 4-5 ton mini excavators. It integrates a single-piece power regulating control valve, and its compact structure is suitable for the cramped cabin layout of mini excavators.

1. The pump body is made of high-strength cast steel in one piece. The core friction pairs, such as the plunger, distributor plate, and return plate, are precision hardened and ground, making them wear-resistant and preventing excessive wear. This ensures extremely low internal leakage even during long-term municipal trenching, garden quarrying, and indoor confined space operations.

2. Adaptive flow regulation precisely matches the original vehicle's power curve, ensuring smooth and synchronized digging, swinging, and traveling movements without any jamming, speed drops, or lack of power, effectively reducing fuel consumption.

3. The mounting flange, spline shaft, and oil port layout are completely identical to the original pump, requiring no modification to piping or electrical wiring, allowing for non-destructive direct installation.

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.