Once the desired torque level is reached, there’s a click sound. That is how its name was made.
It is not only used for automotive but with industrial activities too. It is a power tool and a hand wrench that tightly tightens a screw or a bolt.
Most bolts are made to be mutual with the click-type torque wrench. The socket wrench is the commonly used kind of this wrench. It was first discovered at the New York City Water Department in 1918.
Here are some steps that would guide you on how to use a click-type torque wrench.
Setting a Click Type Torque Wrench
1. The first step is that you need to specify the torque level for perfectly tightening the fastener. The numbered rolled dial on the wrench will help you with this.
The torque level should be compatible with the kind of screw and bolt that you use.
2. For the second step, you have to string the bolt and screw using your hand. It doesn’t mean you need to tighten it, but you have to ensure that it’s properly secured.
When it’s done, you can attach the socket to the wrench.
3. It’s time to tighten the fastener. It should be in the same, exact place with the wrench.
The socket head that you previously bound should be placed over the head of the fastener. Use the click-type torque wrench with care without being hasty. You can do it slowly to ensure the tightness of the screw.
When the bolt becomes tighter, you notice the wrench becomes slower than normal. Pull it smoothly to make the process better.
Don’t snatch the wrench as you will tend to interrupt the pivot point early. You have to be in good timing, and you will hear the click during snatching.
4. The wrench gives off a click sound after you have pulled it smoothly. The click is the sign that the bolt was tightened in a maximum point or the one that was specified beforehand.
Don’t pull the wrench further once the click is heard. It can cause problems with tightening screws and bolts.
It’s better to notice the click by feeling or understanding rather than hearing it as loud as it can be. It will be audible once the pivot point is reached, and the handle grip comes up with the braking force.
5. You need to pay attention when using a click-type torque wrench, especially when you hear the click sound. You must not pull it further once the click was heard.
If ever you pulled it further after the click, you can reset and re-tighten the bolt. Use the same process so it won’t cause any mechanical damage.
The wrench hardly moves after you reach the required tightness. You may not get the proper tightness due to the fastener’s mechanical errors and its counterparts.
6. There is a proper way that you can apply to avoid damage when there are many bolts. For instance, you are trying to reconnect a tire to your car, and you have to follow the correct process.
You have to observe criss-cross order as the tire has bolts in a circular pattern. Circular one by one order won’t make your work done.
Criss-cross order is also applicable for rectangular and square patterns. It can save you from creating any mechanical damage.
How to Calibrate Click Style Torque Wrench
ISO6789 provides guidelines on how to calibrate your torque wrench. It shows the standards of calibration methods, kinds of tools, and more.
You also have the option to use a torque sensor or torque tester for calibration.
1. Before getting started, you must see to it that the calibration tool is in the exact range. The torque wrench should be loaded with the maximum torque that is five times more of the tool’s capacity.
2. The wrench should be set twice. The first one should be 20% of the torque, and the second one should be 60%.
You need to take 5 readings for each range.
3. You have to set it in 100% torque range and take 5 readings too.
4. You have to acquire the allowable endurance. If your wrench doesn’t have it, you can make adjustments based on the manufacturer’s instructions.
You can repeat the whole process until you reach the torque values within the ideal range. Your wrench is ready to work once you finish all of these steps.
To assure that your wrench is in its optimum performance, you can have the calibration after 5 000 to 6 000 cycles.
Safety Measures When Using Your Click Type Torque Wrench
1. High-quality wrenches can be expensive, but they’re worth it. They perform well, and it won’t require you to spend more money on the need to replace them.
2. Use a wrench with the correct type and size, which is useful in the project that you have. Always turn your wrench with care, and keep in mind that you should not turn it in the opposite direction.
3. Avoid pushing as you only need to pull your wrench. Your body position should be in accord with how you use it.
4. You should see to it that the wrench is clean and oil-free before you use it. Injuries can happen if you’re not careful.
5. Don’t use damaged, dented or deformed wrench.
6. It’s not advisable to use a hammer to loosen a wrench from a tool.
There are many reasons why you need to get a click-type torque wrench. Aside from being affordable, you can rely on it to fasten bolts and screws in any application.
You can set the desired torque level, and you can be notified by the click sound when you reach it. So you don’t have to worry about fastening tasks.
You’ll be able to stop when you reach the desired torque.
However, it may need some of your time to calibrate to instill the good performance. It can be sensitive because when you drop it, its accuracy can be diminished.
After you have read all the steps, guidelines, and safety measures, just use your wrench properly and do the calibration that it requires. You can use it for the long term.