What is the purpose of using sand for backfilling a hydraulic cylinder?

Using sand for backfilling a hydraulic cylinder primarily serves to improve drainage. When sand is used, it facilitates the movement of water away from the cylinder area, reducing the risk of water accumulation. Proper drainage is crucial as it helps prevent issues such as hydrostatic pressure buildup, which could lead to damage or malfunction of the hydraulic cylinder. The perforated nature of sand allows for efficient water flow, promoting longevity and operational reliability of the hydraulic system.

While other materials might be used for different purposes, such as structural support or corrosion deterrence, sand specifically is effective in creating a conducive environment for drainage, making it a practical choice for this application.