How To Correctly Crimp Hydraulic Hoses?

In the industrial field, hydraulic systems play a critical role in power transmission and control. As a vital component of hydraulic systems, the crimping quality of hydraulic hoses directly affects the safety and stability of the entire system. Incorrect crimping methods may lead to leaks, pressure loss, and even equipment failures and safety accidents. Therefore, mastering the correct method for crimping hydraulic hoses is essential, and the hose crimping machine plays an irreplaceable role in this process. Below, we detail how to use a hose crimping machine to correctly crimp hydraulic hoses.

1. Preparations Before Crimping

Before using a hose crimping machine, thorough preparations are necessary. First, select hydraulic hoses of appropriate specifications and materials according to the specific requirements of the hydraulic system. Different working environments and pressure requirements correspond to different hose models, so ensure the hose’s inner diameter, outer diameter, working pressure, and temperature resistance parameters match the system. Second, choose suitable pipe fittings, whose size and type should be compatible with the hydraulic hose. Additionally, inspect the operating status of the hose crimping machine. Check whether the equipment’s oil circuit is unobstructed and whether all components are loose or damaged to ensure the crimping machine operates normally and stably. Meanwhile, prepare cleaning tools to clean the hydraulic hoses and pipe fittings, removing surface oil, dust, and impurities to prevent these contaminants from entering the hydraulic system and affecting its normal operation.

2. Steps for Crimping with a Hose Crimping Machine

(1) Assemble the Hose and Pipe Fitting

Cut one end of the cleaned hydraulic hose to the specified length, ensuring the cut surface is flat for good sealing. Then, slide the outer sleeve and core of the pipe fitting onto the hydraulic hose in sequence, paying attention to the correct order and direction. During the fitting process, ensure the pipe fitting and hose are tightly attached with no gaps.

(2) Adjust Crimping Machine Parameters

Set appropriate crimping parameters on the hose crimping machine based on the specifications of the hydraulic hose and pipe fitting, mainly including the selection of crimping dies and the setting of crimping pressure and stroke. Different hose and pipe fitting specifications require corresponding dies to ensure the crimped shape and size meet the requirements. The setting of crimping pressure and stroke should refer to the product manual and practical experience: excessive pressure may damage the hose and pipe fitting, while insufficient pressure may fail to achieve a good crimping effect.

(3) Perform the Crimping Operation

Place the assembled hose and pipe fitting into the die of the hose crimping machine, ensuring accurate positioning. Start the crimping machine to slowly close the die and crimp the hose and pipe fitting. During crimping, closely observe the machine’s operation and crimping effect to ensure uniform and tight crimping. After crimping, wait for the die to fully open before carefully removing the crimped hydraulic hose assembly.

3. Precautions During Crimping

Throughout the crimping process, several details require special attention. When operating the hose crimping machine, strictly follow safety procedures and wear necessary protective equipment, such as gloves and goggles, to prevent accidental injuries. Maintain a clean and stable working environment to avoid crimping quality issues caused by debris interference or equipment shaking. After crimping, conduct a comprehensive inspection of the crimped hydraulic hose: check for cracks, deformation, or looseness at the crimping site, and test its sealing performance and pressure-bearing capacity through pressure tests. If any issues are found, address them promptly or re-crimp as needed.

Using a hose crimping machine correctly to crimp hydraulic hoses is a key link in ensuring the normal operation of hydraulic systems. By making thorough preparations, following procedures strictly, and paying attention to details during crimping, you can effectively improve crimping quality, extend the service life of hydraulic hoses, and ensure the safe and stable operation of industrial equipment.