Types of Torque Wrenches and Operating Principles
If accuracy and precision are paramount in your work, then a torque wrench is an essential tool. Torque wrenches enable you to apply controlled force when fastening or loosening nuts and bolts securely without over-torquing them.
They come in several varieties, with manual torque wrenches being the most common type due to their affordability compared with hydraulic, battery, pneumatic, and electric tools, as well as RAD Guns.
In this blog, we look at how the different types of torque wrenches work to help you make an informed decision about which one is best for your project.
What is a torque wrench?
Torque wrenches are tools that enable you to tighten nuts and bolts securely without over-torquing them. They measure and apply a specific amount of torque to the fastener or bolt, which is determined by the user based on the size, shape, material, and application of the nut/bolt.
By using a torque wrench, you can ensure the desired force is applied and that the fastener or joint does not become loose over time.
Types of torque wrenches
As already mentioned, torque wrenches come in various types, including manual, hydraulic, battery powered, pneumatic and electric models, with each having its own unique features and operating principles.
Manual torque wrench
This is the most common type of torque wrench and is typically used for light-duty applications. It consists of a handle, a drive head that holds the appropriate fastener or bit, and an adjustable dial that sets the desired amount of force to be applied (torque). The user manually applies pressure on the handle while turning it in either direction to tighten or loosen the fastener.
Benefits of manual torque wrenches:
- Easy to use
- Low cost compared with its other counterparts
- Can be used in confined spaces
- Can be adjusted for different torque settings
Hydraulic torque wrench
These tools use high-pressure hydraulic fluid to drive a rotating head, which is used for tightening or loosening nuts and bolts quickly and accurately. Hydraulic wrenches are heavier and more expensive than manual ones but are also much more precise, making them ideal for heavy-duty applications.
Benefits of hydraulic torque wrenches:
- More precise than manual wrenches
- Faster operation compared to manual models
- Can be used in tight spaces
- Durable and can withstand high forces
Pneumatic torque wrench
These wrenches use compressed air to turn a rotating head, which is used for tightening or loosening nuts and bolts. They are usually lighter than hydraulic wrenches, but the user needs an air compressor nearby in order to operate one.
Benefits of pneumatic torque wrenches:
- Faster than manual wrenches
- Can be used in tight spaces
- Safety features, such as an adjustable pressure setting and an audible warning when the desired torque is reached.
Battery-powered torque wrench
These are an ideal choice for users who need portability and convenience. Battery-powered wrenches are powered by either a rechargeable battery or disposable cells, and they use the same rotating head as manual and hydraulic torque wrenches to tighten or loosen fasteners quickly and accurately.
Benefits of battery-powered torque wrenches:
- Portable and lightweight
- Easy to use in confined spaces
- No need for an air compressor.
Electric torque wrench
This type of torque wrench uses electric current to power a motor, which is used to drive a rotating head. They are usually more powerful than the manual and hydraulic wrenches, so they can be used for heavier duty applications. However, electric torque wrenches are also more expensive than other types and require additional safety measures.
Benefits of electric torque wrenches:
- More powerful than manual and hydraulic models
- Can be used for heavy-duty applications
- Easy to use with an intuitive control panel.
Choosing the right torque wrench for your project
When selecting a torque wrench, you should consider the application, size, shape and material of the fastener or joint. Different types of torque wrenches offer different levels of precision and accuracy, so it is important to choose the right tool for your project.
Additionally, you should also consider factors such as cost, portability and ease of use when making your decision.
Conclusion
Torque wrenches are a useful tool for any project that involves tightening or loosening fasteners, and there are a wide variety of types available to suit different projects. Manual torque wrenches are the most basic and affordable option, but hydraulic, pneumatic, electric, and battery-powered models can offer additional precision and power.
To choose the right wrench for your project, consider factors such as cost, portability, ease of use, and accuracy. Additionally, always read the instructions carefully before operating any type of torque wrench.
Browse torque wrenches at ALLTORC today
At ALLTORC, we offer a range of products from leading manufacturers, so you are sure to find the ideal solution for any job. Browse our selection of hydraulic, pneumatic, electric, and manual torque wrenches today for unmatched quality at unbeatable prices. We also offer a variety of other tools and accessories, from socket sets to impact wrenches.
Whatever you are looking for, our team of experts is on hand with their tool knowledge to help you find the ideal solution for any job. Contact us today for more information.
