31N7-10011 31N7-10010 Hyundai R250-7 R250-8 R260-5 Excavator K3V112DT Hydraulic Piston Main Pump Assembly

31N7-10011 31N7-10010 Hyundai R250-7 R250-8 R260-5 Excavator K3V112DT Hydraulic Piston Main Pump Assembly

Product Description

The hydraulic pump assembly of GVO brand for the main pump of the Hyundai R250-7 R250-8 excavator is compatible with the K3V112DT 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 tandem variable-displacement piston hydraulic pump is specifically designed for modern R250-7 and R250-8 medium-sized excavators. It features an integrated assembly comprising a dual-power regulator and a servo control valve, ensuring a perfect match with the original machine's power control system.

1. The pump body is cast as a single unit from high-strength ductile iron. Core friction components—such as pistons, valve plates, and retainer plates—undergo high-frequency quenching and precision grinding, offering superior wear and impact resistance while minimizing internal leakage during prolonged high-pressure operation.

2. The flow rate adaptive control logic mirrors that of the OEM model, ensuring smooth synchronization during combined operations (digging, swinging, and traveling) without engine stalling, speed drops, or jerky movements; this effectively reduces relief valve losses and lowers overall fuel consumption.

3. Mounting flanges, oil ports, and spline shaft dimensions are fully interchangeable with the original pump, allowing for direct, hassle-free installation without modifying hydraulic lines or electrical wiring. Each unit undergoes comprehensive bench testing—covering full-load pressure, flow rate, leakage, and noise levels—making it suitable for various medium-to-heavy-duty applications, including earthworks, mining/crushing operations, and infrastructure construction.

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.