Torque Tools

Origin of Torque

courtesy: Tohnichi Mfg Co

The word ‘torque’ generally means the ‘twisting moment’ or ‘turning moment’ and is widely used as an engineering term. However, torque meant ‘necklace’ in ancient times. The Celts, who overran much of ancient Europe, wore this type of unique ornament around their necks as a symbol of nobility and as a good luck charm for when going into battle.
The word ‘torque’ comes from the days of ancient Rome: the Romans described the Celtic necklaces as twisted and spiral, using the Latin word ‘torquere’, meaning ‘twisted and screw-shaped’. The spiral pattern was a sacred symbol of the soul for the Celts and these personal ornaments came to represent the enemies of the Romans.
Today, torque does not refer to twisted Celtic necklaces, of course. Instead ‘torque’ indicates the degree of screw and bolt tightening and the rotational force of engines. The purpose of the twisting is no longer to create a good luck charm for battle, but torque still carries with it the attraction of safety and power.

– Mayumi Tsuruoka, Professor at Tama Art University (formerly Professor at Ritsumeikan University)

Torque Wrench / Screwdriver for Assembly

Click Type Torque Screwdriver

  • Rotary slip style.
  • RTD is designed to ratchet freely after reaching the set torque to prevent applying over-torque.
  • Toggle clutch torque detection mechanism for enhanced durability.
  • Easy torque adjustment with scale.
  • All models include the locking mechanism which prevents changing of torque during use.
  • Hexagonal locker prevents driver from rolling and locker can be replaced with new one.
  • Counterclockwise tightening model available upon request.
  • Applicable for international use including the EU region. Compliant with calibration procedures of ISO 6789 Type II Class D.

For similar Click-Type Torque Screwdriver models, visit: http://www.neurotechnology.biz/product-category/tohnichi/torque-screwdriver/

Click Type Torque Wrench

  • Basic shape of a torque wrench for tightening operations
  • A clear “click” sound signals tightening completion upon reaching the set torque.
  • The ratchet head has 24 teeth with a 15 degree operating range, allowing for use in space-limited working conditions.
  • Torque setting is easy to adjust by knob and scale.
  • With QLE550N2 to QLE2800N2 models, the built-in torque adjustment handle makes torque changes easy even without a special-purpose tool.
  • QL2N to QL25N5 models have a resin grip with a large, clear built-in scale.
  • QL50N to QL280N models have a resin grip, while the QL420N has a knurled metal handle.
  • QLE550N2 to QLE2800N2 models have an extension handle that separates from the body for compact storage.
  • Applicable for international use including the EU region. Compliant with calibration procedures of ISO 6789 Type II Class A.

For similar Click-Type Torque Wrench models, visit: https://en.global-tohnichi.com/products/categories/12

Torque Verification Wrench

  • Adjustable style torque wrench with limit switch output.
  • Upon reaching the set torque, the torque wrench “clicks” to complete tightening while the limit switch simultaneously sends out a contact signal.
  • A limit switch can be connected to a CNA-4mk3 count checker (sold separately) to easily create a tightening count management system.
  • Signals from a limit switch are captured on a programmable logic controller (PLC) or similar device to establish a Tightening Assurance System using assembly line interlock controls.
  • LS wrenches are supplied with a durable curl cord.
  • Applicable for international use including the EU region.
  • Compliant with ISO 6789 Type II Class A calibration procedures.
  • QLLS, CLLS and PCLLS series products are interchangeable head torque wrenches. Tohnichi’s interchangeable head lineup offers the best selection in the world, making these wrenches ideal for your work.
  • You can modify the wireless Pokayoke (error-proofing) torque wrench on your own, by using the LS part of your existing LS torque wrench to replace the mounting on the T-FHSLS256 transmitter. Contact Tohnichi for details.

For similar Torque Verification models, visit: https://en.global-tohnichi.com/products/detail/196

Torque & Angle Wrench

  • LS type torque wrench can be converted to Angle torque wrench by installing M-DW.
  • Used with wrench torque setting at snug torque.
  • Clicks at snug torque. Begins measuring and displaying rotation angle.
  • Click type wrench with Digital Angle Module, total of 6 models.
  • Applicable for international use including the EU region.
  • DWQL series is compliant with calibration procedures of ISO 6789 Type II Class A.

For similar Torque & Angle Wrench models, visit: https://en.global-tohnichi.com/products/categories/17

Torque Wrench / Screwdriver for Quality Inspection

Digital Type Torque Wrench

  • Torque wrench for inspecting tightened bolts and for tightening.
  • Improved visibility with the dual displays of LCD and LED. LCD screen is viewable under the direct light, while LED screen is vivid in dark places.
  • Saved data can be output through USB port.
  • Robust and durable aluminum body.
  • With CE mark. For international use including the EU region.
  • Ergonomically designed and adapted for Color Vision Deficiencies (Tohnichi Unified Design).
  • Applicable for international use including the EU region.
  • Compliant with calibration procedures of ISO 6789 Type I Class C.
  • Excel Receiver software is a data input tool for Excel® data management. It can be downloaded for free. * Note: Excel® is a registered trademark of the Microsoft Corporation.
  • Tohnichi’s interchangeable head torque wrenches can be used with our interchange head lineup which offers the best selection in the world, making these wrenches ideal for your work.

For similar Digital Torque Wrench models, visit: http://www.neurotechnology.biz/product-category/tohnichi/torque-wrench/

Dial Indicating Torque Wrench

  • Wide range, high accuracy, lightweight, easy-toread large scale, suitable for inspection.
  • DB-S series, DBE-S series and DBR-S series have a convenient memory pointer giving maximum reading.
  • Since the dial can be rotated, the pointer can be set to the desired torque first, and complete tightening is achieved when the pointer indicates “0”.
  • DB accuracy is consistent regardless of where the hand is placed.
  • The dial indicator has a full-surround protective cover to prevent damage to external objects (except DB420N, DBE, and DBR series models).
  • DB25N to DB280N models have a resin grip.
  • DBE has an extension handle.
  • For DBR models, applies load by lever block or winch.
  • Applicable for international use including the EU region. Compliant with calibration procedures of ISO 6789 Type I Class B.

For similar Dial Indicating Wrench models, visit: https://en.global-tohnichi.com/products/categories/21

Beam Type Torque Wrench

  • Classic style torque wrench.
  • Simple direct-reading beam type torque wrench.
  • Light weight, easy-to-read scale, suitable for inspection.
  • Graduated in clockwise and counterclockwise directions, and applicable for retightening and loosening torque inspection methods.
  • The unique shape of the arm is designed to keep the internal force at stable level without any friction, which contributes to enhanced durability.
  • F model grip is shaped to conform to the hand in order to prevent slipping.
  • Applicable for international use including the EU region.
  • Compliant with calibration procedures of ISO 6789 Type I Class A.

For similar Beam Type Wrench models, visit: https://en.global-tohnichi.com/products/categories/22

Torque Tester/ Checker

Torque Screwdriver Tester

  • Digital type torque screwdriver tester eliminates visual reading errors.
  • The loading device keeps stable measuring conditions to avoid reading errors.
  • The measuring range is wide and applicable for various types of torque drivers.
  • Comes with Pass/Fail judgment feature. Judgment results are shown in three colors (white/red/blue), for easy result recognition.
  • Power source : AC100V-240V. Battery pack is available as an option.
  • We have experience manufacturing products with American units of measurement (lbf, in, etc.) for Japan’s aircraft manufacturing industry and for export to the U.S., and products with metric units of measurement (kgf, cm, etc.) for export to other parts of the world.
  • Excel Receiver software is a data input tool for Excel® data management. It can be downloaded for free. * Note: Excel® is a registered trademark of the Microsoft Corporation.

For similar Torque Screwdriver Tester models, visit: http://www.neurotechnology.biz/product-category/tohnichi/torque-tester-checker/

Torque Wrench Tester

  • Motor driven operation version of DOT / DOTE3-G model
  • Motor-operated loading is suitable to use in an inspection room where a large number of wrenches are to be calibrated and managed.
  • Measuring speed can be adjusted according to the volume.
  • The operation lever enables subtle adjustment of positions when measuring direct-reading torque wrenches such as F, DB models.
  • Adaptable to AC100-240V

For similar Torque Wrench Tester models, visit: https://en.global-tohnichi.com/products/categories/28

Torque Wrench Checker

  • Different colored LCD display visibly notifies judgment results.
  • Wide measurement range, reasonably priced, compact and high accuracy.
  • Can read actual running torque (Patented).
  • Built-in statistical processing functions.
  • Statistical processing functions automatically calculate sample numbers and maximum, minimum and mean values.
  • Hex adapters can be combined to test different sized open-end torque wrenches.
  • Power source AC100V-240V±10% to cover international use.
  • Battery pack is available as an option.
  • Support use in the EU.
  • With CE marking.
  • Tohnichi has experience manufacturing products with American units of measurement (lbf, in, etc.) for Japan’s aircraft manufacturing industry and for export to the U.S., and products with metric units of measurement (kgf, cm, etc.) for export to other parts of the world.
  • Excel Receiver software is a data input tool for Excel® data management. It can be downloaded for free. * Note: Excel® is a registered trademark of the Microsoft Corporation.

For similar Torque Wrench Checker models, visit: https://en.global-tohnichi.com/products/categories/29