Sany SY215C hydraulic pump
4 week ago
Product details
Sany SY215C Hydraulic Pump: Comprehensive Overview
1. Introduction
The Sany SY215C hydraulic pump is a vital component in Sany's SY215C excavator, which is widely used in construction, mining, and earth - moving projects. This hydraulic pump serves as the power source for the excavator's hydraulic system, converting mechanical energy into hydraulic energy to drive various hydraulic actuators such as cylinders and motors.
2. Design and Structure
2.1 Pump Type
The Sany SY215C typically uses a variable - displacement axial - piston pump. This type of pump offers several advantages. It can adjust its displacement according to the system's demand, providing precise control over the hydraulic flow. The axial - piston design ensures high efficiency and reliability, as the pistons move axially within the cylinder block, creating a smooth and consistent flow of hydraulic fluid.
2.2 Construction Materials
• Cylinder Block and Pistons: The cylinder block and pistons are made of high - strength alloy steels. These materials are chosen for their excellent wear resistance, high pressure - bearing capacity, and durability. The precise machining of these components ensures tight clearances, reducing internal leakage and improving the pump's volumetric efficiency.
• Valve Plates and Swash Plates: The valve plates and swash plates are manufactured from hardened steel. The valve plates control the flow direction of the hydraulic fluid, while the swash plate is responsible for adjusting the piston stroke. Their hardened surfaces can withstand the high pressures and frictional forces generated during operation.
• Seals and Gaskets: High - quality seals and gaskets are used to prevent hydraulic fluid leakage. These seals are made of materials such as nitrile rubber or fluorocarbon rubber, which have excellent resistance to hydraulic oils, high temperatures, and chemical degradation.
2.3 Integration with the Hydraulic System
The hydraulic pump is integrated into the excavator's hydraulic circuit. It is connected to the engine through a power take - off (PTO) mechanism. The pump draws hydraulic fluid from the reservoir and pressurizes it, sending it to the control valves. These control valves then direct the fluid to the appropriate hydraulic cylinders or motors, enabling the excavator's various functions such as boom lifting, arm extension, and bucket rotation.
3. Performance Characteristics
3.1 Flow Rate and Pressure
• Flow Rate: The Sany SY215C hydraulic pump can deliver a high flow rate of hydraulic fluid, typically in the range of [specific flow rate range, e.g., 200 - 300 liters per minute]. This high flow rate is essential for powering the large hydraulic cylinders used in the excavator's boom, arm, and bucket, enabling fast and efficient operation.
• Pressure: It can generate high working pressures, often up to [specific pressure value, e.g., 350 bar]. The high pressure allows the excavator to perform heavy - duty tasks such as digging into hard soil or rock, as well as lifting heavy loads.
3.2 Efficiency
• Volumetric Efficiency: The variable - displacement design of the pump contributes to its high volumetric efficiency. By adjusting the displacement according to the load requirements, it minimizes internal leakage and ensures that a large proportion of the pumped fluid is delivered to the actuators. This results in more efficient use of the engine's power and reduced energy consumption.
• Mechanical Efficiency: The well - engineered mechanical components, such as the low - friction bearings and precision - machined parts, contribute to the pump's high mechanical efficiency. This means that less mechanical energy is lost as heat and friction during the pumping process, further improving the overall efficiency of the hydraulic system.
3.3 Response Time
The hydraulic pump has a fast response time. When the operator makes a control input, such as moving a joystick to extend the boom, the pump quickly adjusts its displacement and flow rate to meet the demand. This rapid response ensures smooth and precise operation of the excavator, reducing operator fatigue and improving productivity.
4. Working Conditions and Adaptability
4.1 Temperature Range
The Sany SY215C hydraulic pump is designed to operate in a wide temperature range. It can function effectively in cold weather conditions, where the hydraulic fluid may be more viscous. Special cold - start features, such as pre - heating systems or low - viscosity hydraulic oils, can be used to ensure proper operation in extremely cold environments. In hot weather, the pump is equipped with cooling systems, such as oil coolers, to prevent overheating and maintain optimal performance.
4.2 Dust and Contaminant Resistance
Construction sites are often dusty and contaminated environments. The hydraulic pump is protected against dust and contaminants through effective sealing systems. The seals around the shafts and joints prevent dust from entering the pump housing, while filters in the hydraulic circuit remove contaminants from the hydraulic fluid. Regular maintenance, including filter replacement, is crucial to ensure the long - term reliability of the pump in these harsh conditions.
4.3 Load Variations
The excavator may encounter varying loads during operation, from light - duty tasks such as grading to heavy - duty excavation in hard materials. The variable - displacement feature of the pump allows it to adapt to these load variations. When the load is light, the pump reduces its displacement to save energy, and when the load increases, it increases the displacement to provide the necessary power.
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Ningbo Hengnuo Hydraulic Drive Co.,Ltd
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