The Definitive Guide for the Hydraulic Bold Tensioners


Maintaining the life and quality of your mechanical connections requires careful selection of the appropriate hydraulic bolt tensioner. These are important tools for checking bolt tension, stopping the leak and improve general machine efficiency. When choosing a hydraulic tensioner, Consider factors such as use, bolt size and the specific needs of your project. Start by evaluating the nature of your application. Different projects require different approaches to surface tension. Whether you work with pipes, machinery or structural components. Understanding the specific needs of your job is the first step in selecting the right hydraulic tensioner. Consider the size of the bolts you are working with hydraulic tensioners come in many sizes to accommodate different bolt sizes. Matching the tensioner to the bolt size ensures optimum performance and prevents excessive pulling force or too low pulling force.

What Is A Bolt Tensioner?

A bolt tensioner is like a ring jack installed on a bolt and nut with the help of hydraulic power from the tension pump. The biggest advantage of bolt tensioning is that multiple bolts can be attached and disassembled simultaneously. The distributed force will be the same. It is a safe tool. It's efficient, fast and the best way to fasten and disassemble bolts to meet a variety of requirements. In general, a tensioner is also called a bolt tensioner, hydraulic tensioner, bolt stretcher, etc.

Working Process:

A hydraulic nut tightened is like a jack and holds bolts and nuts. The jack pushes on the bolt connection and pulls on the bolt end. The bolt diameter must be at least one length to accommodate the bolt tension tool. This is because the force generated by the jack acts directly on the end of the bolt. The bolt shaft, therefore, experiences tension equal to the load exerted by the jack. In the case of jack tension the nut can be turned using zero torque until it is tightened. Then, the load applied by the jack is relaxed and will remain in the bolt shaft for a high percentage of the bolt length and diameter. To be aware of pre-tightening or disassembly of bolts.

Characteristics and Differences of Tension Devices:

In general, there are four main types of jack bolt tensioners: general purpose type, replaceable tension head type, single-step reset type and two-step reset type. The working pressure of tensioning of these four axes is 150Mpa.

·         Simple type, suitable for straightening single-spec bolts, lightweight, high precision. Small size and compact structure.

·         A replaceable tension head offers high maneuverability. It can be applied to bolts of various specifications by changing the tension head.

·         One-step reset piston auto reset design, suitable for frequent use.

Using the Tension Tool:

It can be widely used in metallurgical mines, the petrochemical industry, Shipbuilding, electrical systems, rolling stocks, heavy machinery, railways, aerospace and other industries, especially in working environments with serious pollution or limited space. The bolt tensioning equipment stretchers are difficult to replace with other tools, and it is an ideal equipment for the assembly of large and medium-sized mechanical products and equipment maintenance.

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