Mechanical Expansion Bolts

Mechanical Expansion Bolts

Nord-Lock Group About Superbolt Products EzFit Downloads

Superbolt was the world’s first to revolutionize nuts and bolts with multi-jackbolt tensioning (MJT) technology. Our technology has been proven in tens of thousands of successful installations and we continue to develop a multitude of solutions to solve the next generation of bolting challenges.

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Customer success stories

Bolted Bolt Maintenance with Huge Potential – how Nord-Lock Group works with Hydropower MRO Solve coupling alignment, secure bolts and mitigate the risks of extreme vibrations with Nord-Lock Group’s expertise in hydropower and turbine bolt maintenance. Read more

Customer Cases Improving steel mill safety and productivity The JFE Steel Corporation’s West Japan Works is one of the largest and most advanced steel mills in the world. Switching to Superbolt multi-jack tensioners has turned one of the riskiest maintenance tasks in the plant into one of the safest. Read more

Customer Cases Alstom and Nord-Lock Group: A secure coupling French multinational Alstom is a global player in the rail transport industry with a raft of international customers seeking the most comprehensive range of products and services on the rail market. Read more

Customer Cases Solving a Pressing Issue with Superbolt Tensioners From hydropower generation facilities to bookbinding press, the usability of Superbolt multi-jackbolt tensioners transcends across different types of applications to keep bolted connections firmly together. Read more

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Customer Cases Ensuring alignment on hydropower turbines Coupling alignment is key for the smooth operation of hydropower turbines, however, many plants are forced to schedule frequent maintenance due to misalignment. When a hydropower plant in Vietnam w... Read more

Customer Cases Swivel shackle with impressive lifting power The Swivel Shackle Giga DSS from Codipro incorporates a Superbolt tensioner. This is the most efficient lifting ring ever made and can handle turning loads. Read more

Customer Cases Looking deep into the stars The Large Binocular Telescope (LBT) on Mount Graham in Arizona, USA, is already one of the world’s most advanced optical telescopes. It consists of two 8.4-meter primary mirrors on a common mount s... Read more

Customer Cases Superbolt tensioners secure slurry pump cover Two sets of hydraulic wrenches were used previously, with one used to achieve 21,000 lb•ft (28,470 Nm) on the 16 perimeter bolts and another used to achieve the 35,000 lb•ft (47,450 Nm) for the cut water bolt. Read more

Customer Cases Towering challenge for a giant crane Challenges are nothing new to Terex Tower Cranes, an Italian-based manufacturer of cranes for construction and industrial use founded (as Comedil S.r.l) in 1962. Read more

Customer Cases Superbolt tensioners secure Tata Steel’s BOS converters The Tata Steel’s Port Talbot Basic Oxygen Steelmaking (BOS) plant in South Wales produces some 4.5m tonnes of strip steel a year, making it one of the largest plants in Europe. Read more

Customer Cases Tensioners on Alcoa 50,000-ton press When Alcoa decided to redesign and rebuild their iconic 50,000 ton press located in Cleveland, OH, they contacted Superbolt to design specialty tensioners that could handle the demanding bolting requirements. Read more

Superbolt product range

Superbolt Superbolt NXT Multi-Jackbolt Tensioners Expect 30% faster installments with the world's easiest-to-use multi-jackbolt tensioner Read more

Superbolt mechanical tensioners are quick to install and remove

Superbolt Superbolt Multi-Jackbolt Tensioners Replace or retrofit existing bolts to safely achieve accurate preload Read more

Flexnuts are reactive nuts designed to be used with Superbolt tensioners for through-hole applications

Superbolt Superbolt Flexnuts Help relieve stress concentrations and increase fatigue life of the bolt or stud Read more

Solutions for your industry

Power Generation

Steel, Forging & Other Presses

Secure connections

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