Tech Tip: Variables that can cause inaccurate torque delivery

July 13, 2015
Here are some examples of variables that can lead to issues with torque delivery in cordless power tools.
  • Type of impact used (air, electric, cordless)
  • Power (air pressure, air volume, length of hose, size of fittings, battery power, battery age)
  • Impacts per second
  • Size of internal hammers
  • Possible use of additional adapters
  • Socket size, weight, length
  • Operator grip strength
  • Weight of the impact
  • Applied angle during use

Attempting to fully tighten hardware with the typical impact guns or torque sticks also prevents using a click-type torque wrench to confirm the specified amount of torque is present. While a click-type torque wrench can identify when the selected torque has been reached, it cannot diagnose excessive torque.

Under-tightening or over-tightening wheel-attaching hardware can also be damaging and dangerous.

Information provided by: ACDelco Auto & Equipment Tools

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