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Torque

Torque


  • Like the speed of an aircraft increases, each structural member becomes more highly stressed. It is therefore extremely important that each member carry no more and no less than the load for which it was designed.
  •  To distribute the loads safely throughout a structure, it is necessary that proper torque be applied to all nuts, bolts, studs, and screws
  • Using the proper torque allows the structure to develop its designed strength and greatly reduces the possibility of failure due to fatigue on devices.
Torque Wrenches
  • There are three most commonly used torque wrenches are the flexible beam, rigid frame, and ratchet types. When using the flexible beam and the rigid frame torque wrenches, the torque value is read visually on a dial or scale mounted on the handle of the wrench.
  • To use the ratchet type, unlock the grip and adjust the handle to the desired setting on the micrometer-type scale, then relock the grip. Install the required socket or adapter to the square drive of the handle. 
  • Place the wrench assembly on the nut or bolt, and pull the wrench assembly on the nut or bolt in a clockwise direction with a smooth, steady motion
  • When the applied torque reaches the torque value indicated on the handle setting, the handle automatically releases or “breaks” and moves freely for a short distance.  
  • The release and free travel is easily felt, so there is no doubt about when the torquing process is completed on this.
  • To ensure getting the correct amount of torque on the fasteners, all torque wrenches must be tested at least once a month or more often if necessary.
  • For more attention, It is not advisable to use a handle length extension on a flexible beam-type torque wrench at any time. A handle extension alone has no effect on the reading of the other types.
  •  The use of a drive end extension on any type of torque wrench makes the use of the formula mandatory. When applying the formula, force must be applied to the handle of the torque wrench at the point from which the measurements were taken. If this is not done, the torque obtained is incorrect.

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