When it comes to high-capacity torque wrenches, hydraulic and pneumatic wrenches have their own unique advantages and are suited to different intended applications.
This article delves into the intricacies of these two types of torque wrenches, examining their features and benefits in light of various factors such as portability, torque output, speed, ease of use, safety considerations, accuracy, cost, and work environment suitability.
Hydraulic Torque Wrenches
A hydraulic torque wrench is known for its impressive torque output and remarkable precision. These tools are powered by a hydraulic pump, which can be operated by a single operator.
The Strengths of Hydraulic Torque Wrenches
Hydraulic torque wrenches offer a range of benefits that make them a preferred choice for many heavy-duty applications. Here are some of the key advantages:
• High Torque Output: Hydraulic torque wrenches are known for their high torque output, making them ideal for heavy-duty applications that require a significant amount of force.
• Accuracy: These wrenches offer a high level of accuracy, often within +/- 3% of the desired torque. This precision makes them suitable for tasks where exact torque application is crucial.
• Ease of Use: Despite their power, hydraulic torque wrenches are relatively easy to use. The hydraulic pump does most of the work, reducing the physical strain on the operator.
• Safety: Hydraulic torque wrenches are designed with safety in mind. By keeping body parts away from any pinch points, this will guarantee a much safer work environment.
• Versatility: These tools are versatile and can be used in a variety of applications, from product assembly to high-cycle applications.
• Durability: Hydraulic torque wrenches are robust and durable, designed to withstand the rigors of heavy-duty use.
• Cost-Effective: While the initial cost may be higher than other types of wrenches, the durability and efficiency of hydraulic torque wrenches often result in lower long-term costs as their is a dramatic decrease in man hours needed to complete the job.
The Challenges of Hydraulic Torque Wrenches
While hydraulic torque wrenches are powerful and accurate, they are not as portable as their pneumatic counterparts. They require a hydraulic pump to operate, which can be difficult in remote locations.
However, for applications that require high torque and precision, the hydraulic torque wrench is often the tool of choice.
Pneumatic Torque Wrenches
On the other side of the spectrum, we have pneumatic torque wrenches. These tools are powered by compressed air and use a precision engineered gearbox to apply specific torque.
They are often used in applications where a constant air supply is available and where they are needed for heavy duty & continuous work.
The Advantages of Pneumatic Torque Wrenches
Pneumatic torque wrenches, powered by compressed air, also offer a host of benefits that make them a popular choice for various applications. Here are some key advantages:
• Portability: Pneumatic torque wrenches are generally lighter and more portable than their hydraulic counterparts. This makes them ideal for tasks that require mobility.
• Continuous Operation: These wrenches can operate continuously without overheating, thanks to the use of compressed air as a power source.
• Versatility: Pneumatic torque wrenches are versatile tools that can be used in a wide range of applications, from automotive repair to construction and manufacturing.
• Ease of Use: These wrenches are easy to use and require less physical effort from the operator compared to manual wrenches or hydraulic wrenches.
• Great Torque Output: While they may not offer as high a torque output as some hydraulic wrenches, pneumatic torque wrenches can be found in models going uo to 11,000 Ft lbs. This wide range of options will handle the majority of the high torque requirements in the industrial market.
• Accuracy: Pneumatic torque wrenches can achieve +/- 5% accuracy, making them suitable for tasks that require a high level of precision.
• Cost-Effective: These wrenches are generally less expensive than hydraulic wrenches, making them a more cost-effective choice for many businesses.
• Low Maintenance: Pneumatic torque wrenches typically require less maintenance than hydraulic models, which can lead to lower long-term costs.
• Adaptable to Factory Environment: Given their reliance on a compressed air line, pneumatic torque wrenches are particularly well-suited to factory environments where such an infinite power source is readily available.
The Limitations of Pneumatic Torque Wrenches
While pneumatic torque wrenches are versatile and portable, they do require a consistent supply of compressed air to operate. This can limit their use in remote locations without access to a compressed air source.
Due to the size of the gearbox and motor design, there might be some applications where you can not use a pneumatic torque wrench and a low-profile hydraulic wrench is required to apply accurate torque.
The Verdict: Which is Better?
The choice between hydraulic and pneumatic torque wrenches ultimately depends on the specific needs of the application. If the application allows the space for a pneumatic torque wrench, this will often be the preferred choice for a technician as you are able to complete your bolting job at a faster rate with less operators vs the hydraulic method.
With that being said, there are industrial applications where due to spatial limitations, a hydraulic wrench might be the tool of choice.
Making the Right Choice with ALLTORC
At ALLTORC, we understand that choosing the right torque wrench can be a daunting task. That’s why our team of experts is always on hand to provide guidance and advice, helping you make the best choice for your specific needs.
Contact us today for more information about our torque wrenches and services.