Model H Portable Bolt-Tension Calibrator
Testing for maintenanc
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The Model H Calibrator can be used in maintenance programs to develop accurate records of impact tool performance. In this program, new impact wrenches are tested for bolt tension output at specific power settings. Any subsequent bolt-tension drop indicated by a lower reading on the dial signals need for maintenance. File card records can be kept by serial number to show last test and performance.
Hardened Test Set—Three hardened, ground Bolt and Nut Test Sets can be supplied in standard bolt sizes of 1”, 1- 1/4”, and 1-1/2” for use in maintenance test procedures. These wear and deformation resistant test sets provide a constant standard for comparative testing. Engineering Preload Specifications— Standard specifications for bolt-tension or joint preload can be established for different types of interface materials. Effects of plating and lubrication are just two of the variables that can be tested. The calibrator also can be used to establish preload criteria, such as bolt-tension required for yield and ultimate load expressed in pounds. This provides a practical working set of figures.
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