KOBELCO DISC DRIVING or Shaft SK200 SK07N2 SK200-8 SK300

The disc driving (or drive disc) in a hydraulic main pump, such as the Kawasaki K3V112, plays a critical role in transmitting mechanical power from the drive shaft to the internal components of the pump. Here's a detailed explanation of its function and importance:

Function of the Disc Driving in a Hydraulic Main Pump

Power Transmission:

• Primary Role: The drive disc connects the drive shaft (which is powered by the engine or another mechanical power source) to the cylinder block or other rotating elements within the pump.
• Mechanism: When the drive shaft rotates, it transfers its rotational energy to the drive disc, which then transmits this energy to the pistons or other moving parts inside the pump.

Ensuring Synchronization:

• Alignment: The drive disc helps maintain the proper alignment between the drive shaft and the rotating group (such as the cylinder block and pistons).
• Synchronization: It ensures that all pistons move in a synchronized manner, which is crucial for maintaining consistent hydraulic pressure and flow.

Load Distribution:

• Balanced Load: The drive disc helps distribute the mechanical load evenly across the drive shaft and the rotating components.
• Minimizing Wear: By evenly distributing the load, the drive disc helps reduce wear and tear on the drive shaft and internal pump components, thereby extending their operational life.

Vibration Dampening:

• Smooth Operation: The drive disc can help dampen vibrations caused by the rotating drive shaft, leading to smoother operation of the pump.
• Noise Reduction: This dampening effect also contributes to reducing operational noise, making the pump quieter.

Absorbing Shock Loads:

• Shock Absorption: In dynamic systems, there are often sudden changes in load or pressure. The drive disc can absorb these shock loads, protecting the pump’s internal components from damage.
• Operational Stability: By absorbing shocks, the drive disc helps maintain the stability and reliability of the pump’s operation.

Construction and Design

• Material: Drive discs are typically made from high-strength, durable materials such as hardened steel or composite materials that can withstand high mechanical stress and wear.
• Design: The design of the drive disc may vary, but it generally includes features such as splines or keyed connections that ensure a secure fit with the drive shaft and the cylinder block.

Importance in Hydraulic Pump Performance

• Efficiency: By ensuring efficient power transmission and reducing energy losses due to misalignment or vibrations, the drive disc contributes to the overall efficiency of the hydraulic pump.
• Reliability: A well-functioning drive disc ensures the reliable operation of the pump by maintaining proper alignment and synchronization of internal components.
• Maintenance: Regular inspection and maintenance of the drive disc are crucial, as any damage or wear can lead to reduced pump performance or failure.

Summary

The drive disc in a hydraulic main pump is a vital component that ensures the efficient and reliable transmission of mechanical power from the drive shaft to the pump's internal components. Its functions include power transmission, synchronization, load distribution, vibration dampening, and shock absorption. Proper maintenance and inspection of the drive disc are essential for the longevity and optimal performance of the hydraulic pump.