Norbar
Torque Tools

Torque Wrench Extension Calculator

Norbar’s torque wrench extension calculator is now available as an app to download free on iPhone and Android. An invaluable tool for engineers, the torque extension app calculates the exact torque wrench setting value for required level of torque to be applied.

When you put an extension on a torque wrench (e.g. a crow foot or a dog bone) the torque applied to the fastener increases as the lever arm extends. The calculator will work out what value you should set into the wrench to achieve the required fastener torque.

The following formula has been used:

  • M1 = M2 x L1 / L2

Where:

  • M1 is the torque setting of the wrench.
  • M2 is the actual torque applied to the nut
  • L1 is the normal length of the wrench
  • L2 is the extended length of the wrench

Product Selector

Finding the correct torque tool for your specific application is essential to ensure torque is applied accurately and with maximum ease.

Use our Product Selector to find exactly the right Norbar tool for the job.

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Find a Distributor

There are Norbar companies in the UK, North America, Australia, New Zealand, Singapore, China and India, together with a network of specialist distributors in most countries.

Select any region on our world map for contact details.

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Download Catalogue

Details of Norbar’s extensive range of torque wrenches, multipliers and equipment for measurement and calibration can be downloaded in our comprehensive online product catalogue.

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Norbar News & Updates

Read about Norbar’s news and developments in the UK and across our international network for the latest updates on the fascinating and fast-moving world of precision torque engineering.

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Download Our Apps

Norbar apps are available free for download on Android and iPhone and are invaluable tools for engineers.

Our Torque Unit Converter provides instant conversion across Metric, SI and Imperial units.

The Torque Extension app calculates the exact torque wrench setting value for required level of torque to be applied.

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FAQ

Precision torque engineering is a wide and complex field which is critical to many sectors of industry and poses many questions to those seeking information about its features and practical applications.

Here are some of the key queries we regularly encounter.

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Use Our Calculators

Norbar has devised easy-to-use online calculators that support the correct application of torque in three key areas:

  1. Unit conversion to assist international measurement definitions.
  2. Torque extension for setting correct values
  3. Torque tension to identify precise levels of torque to be applied for individual applications.
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NORBAR TORQUE TOOLS LTD Beaumont Road, Banbury, Oxfordshire, OX16 1XJ, United Kingdom
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