Why must hydraulic hoses contain slack?

Hydraulic hoses must contain slack primarily to allow for length changes under pressure. When hydraulic systems are in operation, the hoses are subject to fluctuations in pressure and temperature, which can cause them to expand or contract. If hoses are installed too tightly, they may become strained or damaged during operation, leading to potential failures or leaks. Slack in the hoses accommodates these normal expansions and contractions, ensuring that the systems remain functional and reliable. This shock absorption effect helps maintain the integrity of the hose structure and the overall performance of the hydraulic system.

Understanding this requirement underscores the importance of proper hose management in fluid power applications. Maintaining appropriate slack helps in preventing wear and tear, which can prolong the lifespan of the hydraulic system and improve safety during operation.