We often encounter customers who, when selecting hydraulic wrenches, hope to find one that comes with all types of sockets or adapters, hoping that a single wrench can address all bolt tightening and removal needs. However, this is actually not possible. Today, AloNSO (Alonso) will explain to everyone the main categories of hydraulic wrenches and what to pay attention to when selecting hydraulic wrenches?

I. Main Categories of Hydraulic Wrenches:

Hydraulic wrenches are categorized into two main series: drive hydraulic wrenches and hollow hydraulic wrenches. As the names suggest, drive hydraulic wrenches utilize a drive shaft to rotate corresponding sleeves for nut pre-tensioning. Within the allowable torque range, different bolt specifications can be achieved by replacing with high-strength sleeves, making them versatile and widely applicable. Hollow hydraulic wrenches are typically used with transition sleeves. They are commonly employed in situations where the screw shaft extends significantly, the space is limited, there are double nuts, very small bolt spacing, or when the nut is too close to the equipment wall. Additionally, they are often used in specific industries with complex operating conditions.

What to Consider When Selecting a Hydraulic Wrench?

Each hydraulic torque wrench model offers multi-size coverage within its torque range. For torques outside this range, while a complete reconfiguration isn't necessary, additional wrenches may be required. The basic set of a hydraulic torque wrench driving tool includes a hydraulic or pneumatic pump, a set of double-acting high-pressure hoses, one or more hydraulic torque wrenches, and sockets for the range or required models. A hollow hydraulic torque wrench set consists of a hydraulic pump and hoses similar to the driving wrench, but the wrench itself may be divided into two parts due to the use and coverage of various bolt sizes: one part for the power head and another for the working head. A single power head can cover multiple working heads of different sizes, and a working head can cover various bolt sizes through a conversion adapter.

　　AloNSO (Alonso) specializes in hydraulic tool combination solutions and hydraulic tool manufacturing, boasting 21 years of technical experience in the hydraulic industry. Alonso has established a centralized service office in Suzhou, China, to manage and coordinate business activities in the region. The company's main products include hydraulic torque wrench pumps, full-intelligent digital display electric pumps, ultra-high-pressure electric pumps, hydraulic lifting pumps, hydraulic torque wrenches, bolt tensioners, hydraulic nuts, hydraulic cylinders, and other pre-tensioning/dismantling tools. These products simplify the tasks of securing and removing various bolts, as well as overcoming challenges in engineering movements such as shifting, pushing, pulling, and positioning. The company's products have withstood rigorous testing under harsh working conditions for extended periods, earning high praise from customers.