Hydraulic Torque Wrench: Types, Pumps, Accessories

What is a hydraulic torque wrench?

A hydraulic torque wrench is a specialized tool used for tightening and loosening large bolts (as small as M10*1.5).

It’s not much different from the common wrenches we use daily, except that the power source has been changed from manual force to a hydraulic wrench pump.

Of course, the working principle of a hydraulic wrench is much more complex. You can watch the video below for a simple and clear explanation.

Simple and easy to understand, right?

Now you surely have a clear understanding of how a hydraulic wrench works.

Essentially, a hydraulic wrench automates the operation that would otherwise require two people manually.

So, why choose a hydraulic torque wrench?

There are many ways to tighten and loosen large bolts, so why use a hydraulic torque wrench?

Compared to the method shown in the video, hydraulic wrenches offer the following key advantages:

TorcStark hydraulic torque wrenches can achieve a maximum output torque of up to 140,000 Nm, with accuracy controlled within ±2%. This provides a significant advantage over manual operations.

Then, there’s the issue of time. Manually tightening bolts could take hours, but with a hydraulic wrench, the efficiency is greatly increased.

The impact of the working space is even more significant. In many confined environments, it’s difficult for people to enter or maneuver, making it essential to rely on hydraulic wrenches for bolt tightening and removal.

Therefore, hydraulic wrenches are essential for trying and using in industries that require the tightening and loosening of large bolts.

So, in which industries can hydraulic torque wrenches be used? Let’s continue to explore.

Applications of Hydraulic Torque Wrenches

You can frequently see hydraulic torque wrenches being used in the following industries:

• Oil and Gas Industry: Used in pipeline construction, and valve maintenance.
• Power Generation: Wind turbines, nuclear power plants.
• Heavy Equipment Assembly and Disassembly: Bolt tightening/removal for cranes, and trucks.
• Shipbuilding and Aerospace Industries.
• Structural Steel and Infrastructure Projects.

Additionally, hydraulic torque wrenches are used in:

• Metallurgy
• Construction
• Chemical Industry
• …

In summary, hydraulic wrenches are used in various industries worldwide, proving that in most cases, hydraulic torque wrenches are the ideal choice for tightening and loosening high-torque bolts.

How do you choose the right hydraulic torque wrench for your application?

To choose the appropriate hydraulic wrench for your application, you need to know a few key parameters so that TorcStark can recommend the right product for you.

1. Bolt Specifications and Required Torque

Most customers are familiar with the bolt specifications for their projects (such as bolt sizes like M10*1.5, M12*1.75).

However, many users do not know the required torque for tightening the bolts.

In this case, you can provide us with the bolt material and strength grade, and our professional technicians will determine the appropriate torque for your bolts.

2. Key Parameters Regarding Working Conditions

We know that conventional hydraulic wrenches generally fall into two categories: square-drive hydraulic wrenches and low-profile (hollow) hydraulic wrenches. The choice between these two depends on the following parameters:

• Bolt spacing (the distance between bolts)
• Distance between the bolt and the equipment body
• Bolt protrusion height (the portion of the bolt that extends beyond the nut after tightening)

If all these parameters fall within the applicable range of a square drive hydraulic wrench — meaning there is enough space, the wrench fits completely, and the reaction arm has a support point — then the square drive hydraulic torque wrench is the first choice.

Conversely, if one of these parameters is not within the range, you should consider a low-profile hydraulic wrench.

Once you know the torque range for a low-profile hydraulic wrench, you can compare the specific parameters of different models.

If the requirements are met, a low-profile hydraulic wrench can be selected.

However, in some special cases, such as when the bolt spacing is too large and the reaction arm of the hydraulic wrench has no stable support, you may need to consider custom solutions and create auxiliary tools to solve the problem.

To help you choose the right hydraulic torque wrench more effectively, TorcStark has created the following table.

By completing this form with the necessary details, you can generally determine the type of hydraulic wrench you need, its maximum torque, and other key parameters.

Hydraulic wrench working condition questionaire

3. Industry or Environmental Requirements for Your Application

For example:

In industries like coal mining or petrochemicals, you should use hydraulic wrenches and pumps with explosion-proof features.

In petrochemical maintenance, the recommended torque values based on bolt specifications and materials may not always be reliable.

Due to the complex working environment, bolts of the same size as those in other industries may require a hydraulic wrench with higher torque capacity for tightening and loosening.

Therefore, the above three points are crucial when selecting a hydraulic torque wrench.

Now, What Should You Pay Attention to When Purchasing a Hydraulic Wrench?

Let’s continue!

After going through the introduction on how to select a hydraulic wrench, you have likely chosen the right product. Now, the main focus is selecting the appropriate wrench accessories and choosing the right manufacturer.

1. Suitable Accessories

What are the necessary accessories for a hydraulic torque wrench?

The key accessories include:

• Sockets: To fit different sizes of nuts/bolt heads.
• Backup Wrenches: Used to prevent the nut/bolt head from turning while tightening the bolt.
• Reaction Arms: To stop the hydraulic wrench from rotating during operation.
• High-Pressure Hoses: To connect the hydraulic wrench to the hydraulic pump.

Next, you need to consider the project requirements, working environment, and how frequently the hydraulic wrench will be used. These factors will determine the number and type of accessories you’ll need.

For example:

If your project involves bolts of various sizes, you’ll need to buy multiple socket sizes.

The choice of backup wrenches and reaction arms depends on the spacing between the bolts and the distance between the bolts and the equipment body. Different distances to the reaction support points require different sizes of backup wrenches and reaction arms.

Once you’ve decided on the accessories, the next step is choosing the manufacturer.

Let’s continue exploring that!

2. Choosing the Manufacturer

You have the option to choose from world-renowned hydraulic torque wrench manufacturers, such as:

• HYTORC
• ENERPAC
• ITH
• …

These well-known manufacturers offer products with unquestionable precision, reliability, and durability.

The downside, however, is their high price.

Therefore, TorcStark might be the ideal choice for most customers, offering high-quality products at a more competitive price point.

What are the advantages of TorcStark?

1. Comparable Quality: Our hydraulic torque wrenches offer precision, reliability, and durability that are on par with internationally renowned brands.

2. Compatibility: Our hydraulic wrenches are compatible with the products and accessories of the major brands mentioned above, allowing for mixed-use without compatibility concerns.

3. Global Service Network: We have service centers in most countries around the world, ensuring fast and efficient delivery, after-sales service, and technical support.

4. Competitive Pricing: Our greatest advantage is our relatively lower price, thanks to abundant national resources, advances in automation technology, and lower labor costs.

In addition to the manufacturers mentioned above, here are a few key aspects to consider when selecting a reliable seller:

1. International Certifications: Look for certifications from international organizations such as CE, ISO, ASME, explosion-proof certificates, and patents for research and development.

2. Product Inventory and Spare Parts: Ensure that the seller has a sufficient inventory of products and accessories to guarantee the smooth execution of your project.

3. Professional Solutions: Check if the seller can provide professional and easy-to-implement solutions for your bolt-related issues.

4. Warranty and Return Policies: Look for sellers offering a clear and easy return process and warranties that provide one year or even longer of free maintenance, which reflects the seller’s confidence and strength.

5. Technical Support and Calibration Services: Assess whether the seller can conveniently provide calibration, maintenance services, and training for your team on product use and routine maintenance.

6. Factory Visit: Conduct an in-person visit to the seller’s factory to inspect their manufacturing equipment and evaluate the professionalism of their technicians. This is one of the best ways to choose a reliable seller.

How does that sound? We’re confident that you’re now deeply interested in our hydraulic torque wrenches! Why not contact us today to request a quote?

TorcStark looks forward to receiving your call or email!

Hydraulic torque wrenches are used in petroleum, wind power, heavy manufacturing, natural gas and factory machining to tighten and loosen bolts. When it is necessary to tighten heavy-duty bolted connections with large threads, torque units and high-capacity torque wrenches are very effective. They are connected to the hydraulic pump and apply a specific amount of torque to the bolt (torque control is achieved by adjusting the pressure of the hydraulic oil) to prevent damage to or stress on the part that may be caused by over-tightening. They are designed for restricted spaces that are difficult to access. Low-profile torc wrenches are used in narrow or recessed spaces. Square-drive hydraulic torque wrenches use interchangeable sockets to tighten and loosen nuts and bolts. Our hy torque wrenches provide a cost-effective solution for tightening various bolts.

Our hydraulic bolt torquing tools cover the entire Newton-meter range, up to 80,000 Nm, we even offer a 60,000 lb hydraulic torque wrench. Allen wrench drivers or interchangeable hexagon sockets provide controlled tightening of fasteners of various sizes for each tool. Optional accessories further expand the application range of these products. TorcStark hydro torque wrenches are suitable for almost all bolt connection situations with speed, torque accuracy and flexibility. In addition, TorcStark provides the latest hydraulic bolting technology with unique patent advantages, industry-leading safety and accuracy, and incredible repeatability, reliability and durability. TorcStark’s hydraulic bolt system is the original torque/tension machine.

When choosing the best industrial torque wrench, it is usually necessary to consider the quality and price of the hydraulic torque wrench for sale. TorcStark has undeniable strength in these two areas.

Product quality is our strict concern. In terms of the material for the main body of the hydraulic ratchet wrench, we choose an aluminum-titanium alloy with a mechanical strength of over 1000Mpa. The inner assembly parts are an important part of the hydraulic torque multiplier wrench, and we use the alloy steel of over 800Mpa to manufacture. Parts not only include ratchet link, Hexagon drive and other important accessories, but also the reaction arm of our torque wrench. The use of modern CNC machine tools makes our machinery manufacturing more and more precise, and the size error of each component of our high torque torque wrench is between 1-3dmm. The hydraulic socket wrench has very high requirements on sealing, because the torque wrench machine needs to maintain stable work at a maximum working pressure of 80Mpa without liquid leakage. TorcStark adopts the sealing ring imported from Italy to ensure the tightness of the hydraulic torque gun. When assembling the high capacity torque wrench, quality inspectors inspect all spare parts dimensions, and then workers assemble. Each wrench has a unique serial number for better management and inspection. Before leaving the factory, TorcStark will test the torque output accuracy of the high torque machine under different pressures, the stable working duration under the maximum pressure, and the area where leakage may occur. Generally, the torque accuracy of TorcStark wrenches is within ±2%, far exceeding that of many peers.

We have huge competitiveness in hydraulic bolt torquing machine price. There are many types of torque wrench for bolt tightening, including huge wrenches for large bolts, and thin and low profile wrenches for tight spaces. TorcStark strictly guarantees the quality of each wrench. On this premise, we will offer end users, agents and engineers large discounts of our hydraulic torque wrench sets, and provide 24/7 online after-sales support and one-year product warranty.

TorcStark has many years of research and manufacturing experience in hydraulic wrenches. As one of the best manufacturers and suppliers of Hydraulic bolt torqueing tools in the world, TorcStark hopes to provide you with the most suitable hydraulic wrench for you. Therefore, if you want to buy a hydraulic wrench or want to know the price of torque units and torque wrenches, please contact us by email, phone, or online support. TorcStark will provide you with product brochures, torc wrench price lists and the best bolting solutions!