8 Bolt & Stud Tensioner Manufacturers in 2024
This section provides an overview for bolt & stud tensioners as well as their applications and principles. Also, please take a look at the list of 8 bolt & stud tensioner manufacturers and their company rankings. Here are the top-ranked bolt & stud tensioner companies as of April, 2024: 1.RIVERLAKE.
Table of Contents
What Is a Hydraulic Bolt Tensioner?
Hydraulic bolt tensioners are hydraulic tools used to tighten bolts using oil pressure (hydraulic pressure).
Hydraulic bolt tensioners generate a tensile load without applying torsional torque to the bolt, thus maximizing the bolt's material strength as a fastening force. Another feature of the bolt tensioner is that it can directly adjust the axial force (axial force value control) to precisely tighten the bolt.
Uses of Hydraulic Bolt Tensioners
Hydraulic bolt tensioners are used in manufacturing and industrial applications where the durability of large bolts is more important than ever, due to their ability to precisely tighten bolts. For example, wind turbine generators (propellers) on the ocean, chemical plant factories, and other sites that require high-precision bolt tightening and durability.
Furthermore, the hydraulic bolt tensioner is indispensable in the tightening of bolts with high precision and durability for giant structures such as the Tokyo Sky Tree. In addition, hydraulic bolt tensioners take up less space when fastening than conventional torque wrenches, so they can be used in tight spaces, such as between complex structures.
Features of Hydraulic Bolt Tensioner
Fastening bolts with hydraulic bolt tensioners offers the following advantages:
1. Maximizes the Strength of the Bolt
As explained in the principle section, when torsional torque is applied to a bolt, the bolt elongates or breaks due to plastic deformation at a lower tension than when tension alone is applied. Only a lower fastening force can be obtained than the bolt's material strength.
In contrast, the hydraulic bolt tensioner does not exert torsional torque on the bolt, so high fastening force can be obtained.
2. Accurate Determination of Axial Force
When a bolt is fastened by rotating an ordinary bolt or screw, the fastening force (axial force) generated by the bolt is not known. However, when determining the axial force from the tightening torque, the coefficient of friction of the bolt's thread surface and seat surface must be known.
It is difficult to accurately determine the coefficient of friction, and it is common practice to use a surrogate value. If there is a large difference between the coefficient of friction used in the calculation and the actual coefficient of friction as a surrogate value, problems can occur, such as insufficient axial force or bolt breakage during fastening operations. With the hydraulic bolt tensioner, the axial force applied to the bolt can be accurately determined from the hydraulic pressure applied.
3.The Same Axial Force Can Be Applied to Multiple Bolts
Since hydraulic bolt tensioners use hydraulic pressure, the same axial force can be applied to multiple bolts simultaneously by supplying a single source of hydraulic pressure to multiple hydraulic bolt tensioners.
Other Information on Hydraulic Bolt Tensioners
How to fasten with hydraulic bolt tensioners
Hydraulic bolt tensioners start by tightening a nut on a bolt by hand or with a torque wrench in the usual way. Then set the hydraulic bolt tensioner in this state and seat the bolt on the seating surface.
Next, a high-pressure hose is attached to the side of the hydraulic bolt tensioner to apply hydraulic pressure, and the pressure can be set according to the conversion table. The pressure setting can also be converted from the initial required tensile force of the bolt and the effective cross-sectional area.
When pressure is gradually applied with the high-pressure hose connected, the hydraulic pressure pulls the bolt upward and the seated nut floats. By turning this floating nut, the bolt is tightened with several tons of force. After the nut has been turned, the hydraulic pressure is released and the bolt is tightened.
List of 8 Bolt & Stud Tensioner Manufacturers
*Including some distributors, etc.
Sort by Features
- Default
- Company Size: largest first
- Year Founded: oldest first
- Year Founded: earliest first
Sort by Area
- United States of America
- China
- Sweden
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HYTORC
Tensioners
Manufacturer Overview
HYTORC, established in 1968, is a manufacturer based in the United States, specializing in the production of bolting systems, including pneumatic, hydraulic, and electric bolting systems. The company’s products cater to a wide range of industries, including steel mills, mining equipment, refineries, power plants, and wind turbines. With an experienced engineering team, it continues to develope solutions for every bolting application imaginable for custom projects. Its latest product line features patented industry-firsts like hands-free operation to keep tool operators at a safe distance from the application, onboard documentation systems to provide job accountability and assurance, and more.
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TRITORC, Inc.
Hydraulic Bolt Tensioner
Company Overview
TRITORC, Inc. established in 1994 and based in Pasadena, Texas, is a manufacturer and supplier of hydraulic, pneumatic, electric, and manual torque wrenches. The company's product range includes hydraulic torque wrenches, bolt tensioners, heavy-duty impact sockets, manual torque multipliers, and pipe-cutting tools. These tools are pivotal for robust bolting, machine adjustments, and intricate cutting tasks. Serving industries such as machinery manufacturing, bolting services, industrial maintenance, and on-site machining. its services include bolting solutions, in situ machining solutions, hot tapping and line stopping, and re-tubing.
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FASTORQ
Fully Automated Stud Tensioner
Company Overview
Snap-on Incorporated, founded in 1920, is an American designer, manufacturer and marketer of high-end tools and equipment for professional use in multiple industries. The company’s product lines include hand tools, power tools, automotive diagnostics and shop equipment, automotive diagnostics software and other solutions for the transportation service, industrial, government, education, agricultural, and other commercial applications. Products are sold through its franchise dealer van, company direct sales and distributor and Internet channels. Now, it is a $3.7+ billion S&P 500 company headquartered in Kenosha, Wisconsin and employs approximately 12,200 people worldwide.
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Nord-Lock Group
Tensioners
Manufacturer Overview
Nord-Lock Group, established in 1982 and headquartered in Sandviken, Sweden, is a manufacturer and supplier of wedge-locking technology for bolted joints. The company offers a comprehensive range of products, including Nord-Lock washers to secure bolted joints against loosening in extreme conditions, Boltight washers for high-pressure applications, Expander washers to prevent bolt hole stripping, Torque limiters to prevent over-tightening, and Thread repair inserts for fixing of damaged or worn threads. They cater to diverse industries seeking durable and dependable joint fastening solutions.
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RIVERLAKE
Hydraulic Bolt Tensioners
Manufacturer Overview
RIVERLAKE, established in 2005, based in Taizhou, China, is a manufacturer and supplier of high-force hydraulic tools. The company manufactures a wide range of hydraulic cylinders, pumps, bolting tools, flange maintenance tools, pullers, and other hydraulic tools. Their products and services are used in projects including bridge construction, highway, pipeline construction, railway construction, and heavy lifting, among others. The company has provided services to over 2000 industrial and mining companies. The company employs well-trained engineers and sales representatives who provide excellent customer service and tools.
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SPX Flow
Tensioners
Manufacturer Overview
SPX Flow, established in 1912, is a manufacturer of industrial machinery to solve processing challenges based in Charlotte, North Carolina. The company manufactures various machinery such as mixers, pumps, valves, homogenizers, and heat exchangers. The machinery is used in nutrition, health, mining, construction, and chemical industries. The company provides services such as designing, engineering, and installing turnkey process units or full-scale plants. The SPX Flow brands include Anhydro, Bran+Luebbe, Gerstenberg Schrӧder, Pneumatic Products and Seital Separation.
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Bolt & Stud Tensioner Manufacturer Ranking
*Including some distributors, etc.Ranking as of April 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | RIVERLAKE |
100.0%
|
Derivation Method
The ranking is calculated based on the click share within the bolt & stud tensioner page as of April 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
- FASTORQ: 12,600
- SPX Flow: 4,500
- RIVERLAKE: 90
Newly Established Company
- RIVERLAKE: 2005 (19 years ago)
- TRITORC, Inc.: 1994 (30 years ago)
- Hydraulics Technology, Inc.: 1986 (38 years ago)
Company with a History
- FASTORQ: 1920 (104 years ago)
- HYTORC: 1968 (56 years ago)
- Hydraulics Technology, Inc.: 1986 (38 years ago)
Bolt & Stud Tensioner Manufacturers in United States
*Including some distributors, etc.
Global Distribution of Bolt & Stud Tensioner Manufacturers by Country
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
United States of America
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5 | 71.4% |
Sweden
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1 | 14.3% |
China
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1 | 14.3% |
