A torque wrench is a tool designed to accurately apply a specific level of torque to a fastener such as a nut or bolt. It is usually used in situations where tightness of fastener must be controlled to a specific value, and is especially useful in situations where overtightening fastener would cause damage to components being connected. While it can be applied to a wide variety of applications, in this article we will focus on how a torque wrench works in general, and benefits it offers.
The basic principle behind a torque wrench is that it measures amount of torque applied to fastener and then signals user when desired torque has been reached. This is achieved through use of a calibrated spring or other mechanism that is mounted in handle of wrench. As fastener is tightened, spring becomes compressed, and when desired torque is reached, tension of spring is released, causing wrench to signal user with a click, ratchet, or other indication.
To use a torque wrench, user first set desired torque level by turning handle of wrench until it reaches desired value. This is often done by first setting adjustable dial to appropriate setting, and then adjusting handle to desired torque level. Once torque level is set, user can then tighten fastener to that level by applying pressure to handle of wrench. As torque applied to fastener increases, so does tension on spring, and when desired torque is achieved, spring is released and wrench signals user that torque has been achieved.
The biggest benefit of using a torque wrench is accuracy with which it can apply a specific level of torque. Without use of a torque wrench, it can be difficult for even experienced mechanics to accurately apply desired level of torque to a fastener. This can lead to problems with fasteners becoming either too tight or too loose, both of which can lead to components becoming damaged or not connecting properly. A torque wrench ensures that desired level of torque is achieved every time, allowing user to be confident that fastener has been correctly secured.
Overall, a torque wrench is an incredibly useful tool and one that can be used in a variety of applications and situations. By allowing users to apply a specific level of torque to a fastener, it helps to ensure that components are securely connected and that they will not be damaged by overtightening. It is an essential tool for any mechanic who needs to work with fasteners, and its accuracy and convenience make it an invaluable addition to any toolbox.