Stable Output Pilot Pump K5V200 For SY485 And SK460-8 Hydraulic Excavator

Pilot Pump Introduction

The K5V200 pilot gear pump is a dedicated component for the K5V200 series variable axial piston main pump. Directly driven by the main pump drive shaft, it features a compact structure and light weight. It primarily provides stable pilot control oil pressure for the hydraulic systems of 40-50 ton large excavators (such as SK460-8, SY485H, R455, ZAX450, 349, etc.), ensuring rapid variable adjustment and smooth operation of the main pump. It is an ideal choice for hydraulic maintenance under heavy-duty mining conditions and is often replaced simultaneously with the main pump overhaul to avoid system failure.

Focused on everyday reliability, the pilot pump series supports a wide variety of equipment from compact utility machines to large production units. Its straightforward design prioritizes dependable daily operation with good tolerance to normal contamination levels found in real-world working conditions.

A prominent hydraulic manufacturer, Hebei Runhe has over 12 years of experience. Its product range covers hydraulic key components, serving automation, agriculture and engineering. It offers customized services for special needs and upholds core values of all-win cooperation and social responsibility.

Pilot Pump Parameters

Pilot Pump Advantages

• High Reliability and Long Lifespan: Utilizing high-strength steel gears and precision machining, these pumps are wear-resistant, pressure-resistant, and have a normal service life of tens of thousands of hours. Low failure rate, suitable for heavy-duty mining conditions, reducing downtime maintenance costs.
• Stable Pilot Pressure Output: Provides constant pilot oil pressure, ensuring rapid response and smooth operation of the main pump's variable displacement adjustment. Prevents system sluggishness or instability, improving the excavator's overall maneuverability and operating efficiency.
• High Efficiency and Low Noise: The gear pump has a simple structure, volumetric efficiency ≥92%, and low mechanical loss; low operating noise and vibration improve the comfort of the operating environment. It also supports high power density of the main pump, saving fuel and energy.
• Compact Structure and Convenient Maintenance: The cast aluminum housing design is small and lightweight, directly driven by the main pump shaft, requiring no additional power. Modular independent installation makes replacement simple (no major disassembly of the main pump required).

Pilot Pump Usage Precautions

1. Never start the machine without hydraulic oil or with insufficient oil level. The pilot pump is a self-priming gear pump, but ensure the system is fully filled with oil before the first start.

2. The hydraulic oil must be clean. High-quality anti-wear hydraulic oil with a contamination level no lower than NAS 9 is recommended. Change the hydraulic oil and filter regularly (every 2000 hours is recommended).

3. Avoid prolonged overload operation, as this will accelerate wear on the pilot pump gears and seals.

4. When starting the machine cold, preheat it at low speed under no-load for 5-10 minutes until the oil temperature reaches above 30°C before heavy-load operation. This prevents excessively high oil viscosity at low temperatures from causing cavitation or damage.

Package

Normally, it is packaged in cardboard boxes and then shipped on pallets or wooden crates. Special requirements from customers can be discussed and negotiated.