What is PTI Torque?

PTI torque is a new testing standard that has been put together by the Power Tool Institute. They have written a document that outlines a test lab procedure – which is intended to be a common method to measure relative output torque in corded/cordless drills, drill/drivers, and screwdrivers.

You can view the full document regarding these torque testing procedures on their web site.

What are some examples of the things that are outlined in this document? Here’s some samples:

  • All testing should be performed with conditioned battery packs, and they outline the definition of a conditioned battery pack
  • If there is an adjustable clutch, it must be set in full lock position, clutch slipping renders a test invalid
  • Torque should always be measured in the forward position, never reverse
  • They outline all the calculations to be performed on the data

Overall, it’s pretty interesting stuff, and it’s not a very long read either, the information is surprisingly concise and clear. If you want to learn more about torque testing procedures on drills and drivers, the procedures provide interesting insight.

For an example of PTI testing results compared to manufacturer ratings, check out the torque info in this Makita 18v cordless drill review.