European Standard Hydraulic Hose

In North America, builders of mobile equipment like tractors and excavators have long used SAE standards to create general, dimensional, and performance specifications for their hydraulic hoses. However, many European manufacturers gravitate toward EN specifications instead.These standards help reduce inventory needs and engineering complexity for end users. They also ensure consistent reliability and performance, regardless of geographic region.

 

 

While American builders of mobile equipment have long relied on SAE standards, which provide dimensional and performance specifications for hydraulic hoses, these specifications don’t take into account all of the unique requirements of specific applications. European production standards, on the other hand, help to streamline hydraulic system design and improve productivity.

 

Among the most important parameters that need to be taken into consideration when selecting hydraulic hoses are size, temperature, and fluid compatibility. Other parameters such as bending radius can also affect the hose’s performance. It is vital to avoid routing a hose at a bend smaller than the specified minimum radius, which may shorten its lifespan and cause leaks.

 

The ISO 18752 standard provides nine pressure classes for maximum working pressure, with hoses rated according to their resistance to impulse in four grades. Each grade requires a particular number of impulse cycles at a certain temperature and impulse pressure. The hoses are further classified by their OD into standard types (AS, BS, and CS) and compact types (AC, BC, CC, and DC). They can be used in a variety of equipment.

 

 

Hydraulic hoses are subject to complex standards both regionally and globally. These standards dictate construction and performance specifications for various types of hoses. They also regulate the temperature criteria that a product can withstand.

 

The ISO 18752 standard differentiates between different types of hoses by identifying them by pressure classes. This class system accommodates an entire range of hose diameters. The standard also requires impulse testing. The test measures the hose's ability to resist impulses for a minimum number of cycles.

 

The hose construction can be braided, wire-reinforced or made from a flexible material such as rubber. The choice of construction depends on several factors, including the required working pressure, fluid compatibility and abrasion resistance. The hose can be produced using either a wrapped finish or free steam vulcanization process. It can also be coiled or corrugated. These features are used to improve abrasion resistance and increase flexibility. The hose should not be twisted because this can shorten its life and loosen the connections.

 

 

Hydraulic systems in machinery, mobile vehicles and other equipment often require a specific type of hydraulic hose to function properly. These hoses must be compatible with the type of hydraulic fluid being conveyed, which can vary by manufacturer and application.

 

Typically, the hose standards used to design and manufacture these hoses are defined by regional and manufacturers’ engineering practices. This can make it difficult for equipment designers to switch hoses from one type of machine to another when changing environments or conditions.

 

When selecting a hose for an application, always pay close attention to the documentation that comes with your equipment to identify what hose standards it is designed and manufactured to. This will help you avoid purchasing a hose that isn’t compatible with your equipment. Also, be sure to route the hoses in a way that will prevent excessive flexing and ensure the hose meets the minimum bend radius requirements of the hose specification. Creating insufficient bends can strain the reinforcement wires and cause leaks.

 

 

There are a number of important factors to consider when selecting the right hydraulic hose. These include size, temperature, material, pressure, ends and delivery. The wrong hose could cause damage to machinery and expose the operator to danger. It is also important to avoid using a hose that is not properly rated for the application.

 

The internal and external diameters of the fitting must match the hose’s diameter. Otherwise, the connection won’t seal and will leak. The hydraulic fluid and working environment must also be compatible with the hose’s material and construction. This will protect the hose from chemical degradation and improve its lifespan.

 

Physical abuse of the hose is also a common problem. This can include side loads, abrasion and twisting. To reduce this, swivel-type adapters should be used and the hose should be routed away from moving components. Also, the system should be inspected frequently to ensure that it is functioning correctly and that there are no air leaks or other problems.