Types of Torque Wrenches and Operating Principles

There are five main kinds of torque wrenches in the market, each with pros and cons. Here is an overview of what they are, how they operate, and which scenario is the best for them.

Click Torque Wrenches

The click wrench gets its name because of the audible click sound they produce when you reach the desired torque amount. They are simple to use and cheap while providing the same accuracy as a beam-style wrench. These attributes make them the favorite for most people of varying skill levels, even beginners. The only downside is that there is still the risk of overtightening the fasteners. That's because, even though they produce the sound as an indicator of the required torque, they do not prevent you from fastening further as you can continue turning the wrench. It is up to you to stop, but it is not often easy to stop immediately they produce the click sound.

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Common Torque Wrench Sizes: Finding the Right Size

Torque wrenches are usually described by their drive size, which in turn indicates the bits you can use to tighten fasteners. The torque wrench size significantly impacts its functioning since the bigger the drive size and the longer the handle, the more torque it can deliver. There are varied sizes, all of which work to suit different tasks best. Some common roles for torque wrenches are fastening car parts, including;

  • Wheels
  • Connecting rods
  • Suspension bushing
  • Struts
  • Calipers 
  • Intake manifold
  • Cylinder heads

You may also need them on lawnmowers, mopeds, your HVAC, generators, etc. Having the right size makes your work easier and safer. Occasionally, two torque wrenches may crossover in function, but normally they are all geared to different roles.

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Complete Guide to How Torque Wrenches Work

Torque is the rotational equivalent of force. Torque is measured in units of force multiplied by distance, like pound-feet or newton-meters (abbreviated ft-lb or Nm). Once you've got the hang of torque, you'll be able to tell if your wrench is applying enough force to rotate the object that you're attempting to turn. If it's not enough force, then whatever you're trying to turn will not budge; if there is too much force, this can cause damage to your hand or something else.

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Torque Wrench Limitations: Accuracy and Range

A Torque Wrench is a vital tool used to apply the necessary torque when tightening bolts and nuts. It finds applications in the automotive, aerospace, engineering, and construction industries.

This tool has been in the market for over a century. But it has seen considerable improvements over the decades, thanks to technology.

When using a torque wrench, you always want to achieve consistent accuracy while avoiding overtightening or under-tightening situations. Selecting the right torque wrench for your applications and sticking to the torquing best practices are critical to achieving the desired outcomes.

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