Power Drives EN-19 Hydraulic Bolt Tensioner

A hydraulic bolt tensioner is a specialized tool used to apply precise and uniform tension to bolts during assembly or maintenance operations. It is particularly useful in applications where large bolts are used, such as in heavy machinery, construction equipment, bridges, and other structural components.

Here are some key features and aspects of hydraulic bolt tensioners:

Hydraulic Operation: Hydraulic bolt tensioners utilize hydraulic pressure to apply tension to bolts. They typically consist of a hydraulic cylinder with a piston that extends to push against a load cell or reaction nut, which in turn applies tension to the bolt.

Uniform Tensioning: Hydraulic tensioners provide a uniform and controlled method of tensioning bolts. This helps ensure that each bolt in a joint is subjected to the same amount of tension, reducing the risk of uneven loading and potential failure.

Accuracy and Precision: Hydraulic tensioners allow for precise control over the amount of tension applied to bolts. This is important for achieving the desired level of preload, which is critical for maintaining the integrity and performance of bolted joints.

Safety: Hydraulic tensioners are designed with safety features to prevent over-tensioning of bolts, which can lead to damage or failure. Pressure relief valves and built-in pressure gauges help operators monitor and control the tensioning process to avoid exceeding the recommended limits.

Versatility: Hydraulic bolt tensioners come in various sizes and configurations to accommodate different bolt sizes, types, and applications. They can be used for tensioning both standard bolts and specialty fasteners, such as stud bolts or anchor bolts.

Efficiency and Speed: Compared to traditional torque wrenches or manual tightening methods, hydraulic tensioners offer faster and more efficient bolt tensioning. This can result in reduced assembly times and increased productivity, especially in large-scale construction projects or maintenance shutdowns.

Accessibility: Hydraulic tensioners can be used in tight or hard-to-reach spaces where manual tools may not be practical. This makes them suitable for a wide range of applications, including retrofitting and repairs.

Maintenance: Proper maintenance and calibration of hydraulic tensioners are essential to ensure their continued accuracy and reliability. Regular inspections, seal replacements, and hydraulic fluid changes may be necessary to keep the tools in optimal working condition.

Overall, hydraulic bolt tensioners are valuable tools for achieving precise and consistent bolt tensioning in various industrial and construction settings. Their ability to improve safety, efficiency, and reliability makes them indispensable for critical bolting applications.

Bolt tensioning is now the preferred method of tightening bolts and studs on all critical applications. Bolt tensioners are designed for operation in a wide variety of applications including pipeline flanges, heat exchangers, pressure vessels, compressor covers, boiler feed pumps, windmills and many others. We provide a comprehensive range of bolt tensioners for optimum solutions to bolt tensioning requirements. Our Bolt tensioners and accessories are CE marked in accordance with Pressure Equipment and Machinery Directives, as applicable. In comparison to traditional tightening methods, tightening with

     Bolt Tensioners Offers Significant Advantages:

    No torsional loading of fasteners.

    Direct loading - no damage to assembly.

    Easy and fast operation.

    Very high accuracy and repeatability.

Automation feasible and can be used for critical applications.