As explained by Power Motion Tech in their article, “Making Sense of Hydraulic Hose Standards,” hydraulic hoses are designed and classified according to various standards, including SAE, ISO, and others. In the U.S., SAE standards are the most commonly followed, providing guidelines for construction, performance, and pressure ratings for hoses used in hydraulic systems.
For decades, SAE J517 has been the cornerstone for specifying 100R1 through 100R12 series hoses, ensuring minimum requirements for pressure ratings and construction. More advanced categories, such as R13, R15, and R17, fall under constant-pressure hoses, maintaining uniform pressure ratings across sizes. However, it’s important to note that SAE compliance is voluntary, and many manufacturers go beyond these standards to deliver better performance.
For example, Parker Hannifin offers hoses like the 797 series, which achieve a tighter bend radius—up to 47% shorter than SAE minimums—providing benefits such as reduced inventory, lighter weight, and enhanced longevity in dynamic applications. Similarly, their 787 hose offers a smaller diameter than SAE spiral, improving flexibility and reducing the hose footprint.
Recently, ISO standards like ISO 18752 have gained traction, especially among global OEMs. Unlike SAE, ISO focuses on performance and pressure requirements, making it ideal for international applications. This shift underscores the importance of selecting hoses that not only meet minimum standards but also exceed them for superior performance and cost-effectiveness.
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Article with all rights reserved, courtesy of powermotiontech.com.