What is a Torque Wrench and What is it For
Modern mechanisms require the creation of certain conditions during repair or maintenance. In particular, threaded joints used to assemble the vast majority of structures often require the use of strictly dosed tensile forces. A torque wrench is a device for tightening bolts or nuts with a specific torque measured in Newton meters (Nm). It makes it possible to comply with the quality requirements for the assembly of a particular mechanism, assembly or connection. Insufficiently tight contact of parts can cause leakage of gases or liquids, weakening of the elements of the mechanism, malfunctions or failure of the entire unit. Excessive force exceeding the tensile strength of the material creates the risk of destruction of the connecting elements or the part itself, breakdown of the thread or separation of the bolt head,
Best Torque Wrench is designed to use various nozzles, being universal devices. The tool itself has an output square, on which the end head necessary in this case, or a special connecting socket for installing a horn, nut or cap nozzle, is installed. In addition, there are torque wrenches used in electronics and other delicate, fragile mechanisms. One key can be used for several sizes of fasteners. Regardless of the type of construction, torque wrenches have the main elements: - Ratchet (removable nozzle). - Socket for installing interchangeable nozzles with a lock. - A housing comprising a spring mechanism. - etting scale or measuring element. - Clamp of installation of the moment. - Handle.. The torque wrench allows you to control the amount of applied force, showing its value using a measuring device, or simply turning when it reaches the set limit. There are different sizes that allow you to provide certain amounts of effort, which cannot be exceeded so as not to disable the tool. Accuracy control requires periodic verification, which is carried out every 5,000 load cycles or 1 time per year. Measurements and, if required, instrument calibration are carried out in specialized laboratories of Rostest certification centers with the appropriate equipment. |
Kinds
There are several designs of torque wrenches, differing in the principle of action and providing one degree or another of accuracy. They are used for compounds of different degrees of responsibility, although any type has a relatively low error - the maximum value is 6–8%. Keys differ in different ways:
Different key designs are used both for quick tightening of joints and for critical parts requiring high accuracy of installation conditions. They may have a predetermined torque that is not amenable to adjustment, or have the ability to adjust the limit value of the applied force. There are also models where the tightening torque can be controlled independently, in accordance with the applied force. They are convenient when working with various types of connections with their own requirements for the magnitude of the moment
There are several designs of torque wrenches, differing in the principle of action and providing one degree or another of accuracy. They are used for compounds of different degrees of responsibility, although any type has a relatively low error - the maximum value is 6–8%. Keys differ in different ways:
- Type of indication.
- Limit value of allowable effort.
- Area of use
Different key designs are used both for quick tightening of joints and for critical parts requiring high accuracy of installation conditions. They may have a predetermined torque that is not amenable to adjustment, or have the ability to adjust the limit value of the applied force. There are also models where the tightening torque can be controlled independently, in accordance with the applied force. They are convenient when working with various types of connections with their own requirements for the magnitude of the moment