Hydraulic Bolt Tensioner

How Can We Ensure the Accuracy of the Hydraulic Bolt Tensioner?

Precision is the core of Ekxia hydraulic bolt tensioners' competitiveness.

Pure axial tension technology:

Apply the hydraulic axial force directly to significantly eliminate friction uncertainty. This achieves higher accuracy and repeatability in preload force than the torque method.

Stable hydraulic control:

The full series has a rated/max working pressure of 150 MPa, ensuring linearity and predictable pressure-load conversion.

Precise stroke and load matching:

Stroke range 8–15 mm, load coverage 180–3110 kN, suitable for M20–M100 (3/4″–4″) bolt specifications.

What Have We Done to Ensure the Safety of the Product?

The Ekxia hydraulic bolt tensioner has always adhered to the principle of putting safety first:

All of our products are designed to be fail-safe. This can effectively prevent catastrophic leaks in pipelines or reactors.

We also employ pure tension technology. This technology prevents shear and torsion damage to bolts. As a result, the connection becomes safer and more reliable.

The LRT & SRT series have an integrated spring automatic return function. After depressurization, the piston automatically retracts. This significantly improves the operation cycle speed and safety.

The WBT series features a tension-rod break-prevention design. It also has an internal counting valve block and a joint explosion-proof design. This boosts safety in risky work settings.

Why Are Our Hydraulic Bolt Tensioners so Durable?

Our hydraulic bolt tensioners are built with high-strength steel. They are treated to resist surface rust and corrosion. Our products are very durable, making them well-suited to tough industrial conditions. They can handle high temperatures and humidity without issue.

All Ekxia products have an extremely long service life. Our hydraulic bolt tensioners can withstand over 100k cycles without requiring seal replacement. Due to the precise design and high quality of our sealing systems, the maintenance frequency and downtime costs of our products are significantly reduced.

EKXIA hydraulic bolt tensioners offer a tough, reliable option for your fastening needs.

Where Is the Compatibility of Our Product Demonstrated?

Our hydraulic bolt tensioners possess high compatibility and flexibility. They can be adapted to most standard bolt specifications and meet the requirements of key industries.

Bolt size compatibility

• The product supports metric bolts ranging from M20 to M100 and imperial bolts from 3/4″ to 4″.
• The LRT and SRT series come with interchangeable extractors. This makes it easy to adapt to different bolt specifications.
• The WBT series is suitable for M30–M64 and can provide high-precision and high-load fastening.

Load and Pressure Compatibility

• The product's rated working pressure is 150 MPa, and the maximum tensile force range is 180 kN to 5000 kN.
• Our products can be used in conjunction with electric or pneumatic high-pressure hydraulic pumps. Multiple tensioners can be operated simultaneously to ensure uniform load distribution.

Material and environmental compatibility

The product's surface has been treated to prevent rust and enhance corrosion resistance. Our products are suitable for environments such as oil and gas (pipelines, drilling platforms, wellhead maintenance), energy (thermal power, nuclear power, hydropower, gas turbines), and heavy industry (machinery, metallurgy, shipbuilding, steel structures).