How to operate an angular torque wrench?

Home Improvement

An angular torque wrench is a precision tool that measures the force applied to a fastener while tightening. It gives a visual or audio signal when the torque force is reached, indicating when to stop applying pressure. This prevents damage to the fastener from over-tightening or potential weakness from under-tightening.

For some applications, such as in the automotive industry, tightening is also measured by the angle method. An angular torque wrench measures both torque force and angle rotation electronically. This eliminates the need for an angle gauge or protractor, making it more accurate and faster.

An angular torque wrench is commonly used in automotive mechanical applications that require both torque force and defined angle measurements. The maximum torque force and torque angle specifications must be determined for the bolt being fastened. The digital readout displays both torque and angle, which can be preset. Specific angle measurements ensure that the bolts are equally fastened at the required degree. It’s critical for mechanics to double-check fastenings.

The most accurate way to tighten bolts is to work gradually. Tighten all bolts in a rotating sequence, using a third of the force required each time. The final measurement includes the degree of angle rotation according to the specified setting for the fastener. This is the final test for strength and reliability.

FAQ

1. What is an angular torque wrench?

An angular torque wrench is a specialized tool used to tighten bolts or nuts to a specific torque setting, while also measuring the angle of rotation applied to the fastener.

2. When should I use an angular torque wrench?

An angular torque wrench is especially useful when tightening critical fasteners that require precise torque and angle specifications, such as those found in automotive or aerospace applications.

3. How do I set the torque on an angular torque wrench?

To set the desired torque on an angular torque wrench, first select the torque value on the wrench’s scale. Then, adjust the handle until the desired torque value is reached.

4. How do I use an angular torque wrench to measure the angle of rotation?

To measure the angle of rotation, use the wrench to tighten the fastener to the specified torque setting. Then, continue to rotate the wrench until the desired angle is reached, while observing the angle scale on the wrench.

5. How do I maintain an angular torque wrench?

To maintain an angular torque wrench, keep it clean and dry when not in use. Do not use it as a pry bar or hammer, and avoid dropping it or exposing it to extreme temperatures. Also, have it calibrated regularly to ensure accuracy.

6. Can I use an angular torque wrench for left-handed threads?

Yes, an angular torque wrench can be used for left-handed threads by simply reversing the direction of rotation.

7. Can I use an angular torque wrench for non-standard fasteners?

It is not recommended to use an angular torque wrench for non-standard fasteners, as the torque and angle specifications may not be accurate for these types of fasteners.

8. How do I use an angular torque wrench in a confined space?

When working in a confined space, use a shorter handle on the wrench, or use a crowsfoot attachment to allow for easier access to the fastener.

9. Can I use an angular torque wrench for tightening lug nuts?

Yes, an angular torque wrench can be used for tightening lug nuts, but it is important to follow the manufacturer’s torque and angle specifications for the specific vehicle being serviced.

10. How do I know if my angular torque wrench is accurate?

To ensure accuracy, an angular torque wrench should be calibrated regularly by a qualified technician. Some wrenches also have a built-in calibration feature that allows for self-calibration.

11. Can I use an extension on an angular torque wrench?

Yes, an extension can be used on an angular torque wrench, but it is important to ensure that the extension is of the correct size and length, and that the torque and angle specifications are adjusted accordingly.

12. How do I store my angular torque wrench?

When not in use, an angular torque wrench should be stored in a dry, clean location, away from other tools or objects that may damage it. It is also important to store it with the torque setting at the lowest level to prevent the spring from becoming permanently set at a higher level.