Torque conversion


Manual Torque Tools: Wrenches/Screwdrivers

  • Tightening/Assembly: To apply a specific amount of torque to tighten a fastener.
  • Measuring/Inspection: To determine the torque of a fastener that has already been tightened.

Torque Checker

To quickly confirm the torque value of manual torque wrenches.

Torque Tester

To confirm the torque value and or accuracy of manual torque tools, also equipped with loader mechanism to assist with precise adjustments to bring torque tools into required accuracy.

Torque Meter/Gauge

To inspect the torque on products such as bottle caps, or to determine the starting torque. Gauges are for inspecting products with low torque.

Calibration Kits

Apparatus including lever, pulley, and dead weights designed to check accuracy of torque test equipment.

Manual Torque Tools for Tightening/Assembly

Basic "click" Torque Wrench/Screwdriver

The click wrench/driver is set to a specific torque value when force is applied the wrench will create a "click" sound and feel when it reaches the set torque value. Stop applying force at click to avoid over torquing.

  • Attributes: Simple, Quick, Durable for Mass Assembly.
  • Indicating Torque Wrench for Tightening
    • Normally digital or analog indicating wrenches are designed primarily for measuring, but may also be used for tightening.
      • Attributes: Visual monitoring of display or scale; slower process as applying torque slows down in order to insure target torque without exceeding desired value. Digital versions offer data capture of applied torque.
      • Wrench Types:
        • DB Dial Beam: Move Scale to Target Value
        • CEM3-G DataTork: Program to T-Mode set lo value at target torque
        • CEM3-BTD Duplex Data Tork: PC software sets up target torque sends via Blue tooth to wrench, user performs tightening with light/buzzer; data sent back to PC.
        • CPT-G ProTork: Program up to 10 set values and select, light and buzzers guide to target torque. Designed just for tightening.

Over Torque Prevention

To help insure proper tightening without over torque, specialty torque wrench mechanism are available:

  • Rotary Slip (Screwdriver): Clicks at set torque but ratchets without applying more torque past click. [Ref: RTD video]
  • Slip (Wrench): Cam action mechanism generates 45 degree slip. [Ref: QSPCA video]
  • Two Step Motion (Wrench): Clicks at set torque value with 5 degree toggle, then there is a 14 degree "free zone" where torque will not increase, then a 2nd and final click alerts user to stop applying force.
  • Break Over (Wrench): 90 degree "breaking" upon reaching set torque value. [Ref: NSP video]

Specialty Tightening Applications

  • Bi-Directional: Basic click wrenches tighten and control torque only in a clockwise direction. Specialty mechanism for tightening control in CW and CCW directions is available. [Ref: BQSP]
  • Torque and Angle: For applying a snug torque followed by a specific degree of angle (CTA2, WQL). [Ref: CTA video]
  • Click Wrench with Torque Data Capture: Click wrench with torque sensor sends actual applied torque value to display CD5 via cable [Ref: CSPLD / CSPLDC] or wirelessly to Receiver/PC.

Type of Head

Basic click wrenches come with ratcheting square drive head fixed onto the body of the wrench. Various application may require other types of head styles:

  • Tohnichi Interchangeable Type Wrenches: Basic click wrench has different round root ends that accepts a variety of Tohnichi head types, which can easily be removed or exchanged. [Ref: CSP, CL-MH, PCL, PQL and Interchangeable Head]
  • European Interchangeable Head Standard: Specialized version of CL and CSP that have DIN end adapter for European market. (SCL, SCSP)
  • Fixed Open or Ring Head Wrenches: Wrench has open end or ring head fixed to the body. Available in Metric and English sizes. Specialty versions feature speed notch, shorter jaw, and specials upon request. [Ref: SP, RSP, SP-N, SP-H]
  • Pipe Head Wrench: Features head for pipes and plumbing applications. (PHL)
  • Dual Drive Wrench: Features two square drives for bi-directional tightening (DQL)
  • MotorTork: Features unique clamping mechanism that allows for regular tools to be integrated onto the torque wrench. Ideal for motorcycle maintenance. (MT70N)

Type of Body

Most Tohnichi basic click wrenches feature a resin or rubber grip and metal body for user comfort and durability. Specialty applications may require other body features:

  • Metal Handle Wrench: Features knurled metal handle ideal for oily situation where hand might slip on resin/rubber grip. (QSP-MH, CSP-MH, SP-MH)
  • Colored Grips Wrench: A selection of colored grips are available for QSP and CSP wrench to organize tools by torque set or application. (QSP/CSP with Colored Grips)
  • Titanium Wrench: Features a body made of Titanium which is 50% lighter than standard wrenches. Ideal for working over ahead. (TiQL)
  • Insulated Wrench/Screwdriver: Features insulated body to protect against electric shock. Ideal for electric car assembly. (QSPZ, PQLZ, RTDZ, RNTDZ) [Note: Not yet available for USA market]
  • MotorSportsWrench: Features torque range ideal for motorcycle maintenance, chrome body, and storage case. (MTQL)
  • Longer Length Wrench: Features longer overall length while reducing required hand force. Ideal for working in assembly pit. (CSPL140N3X15D)

Error Proofing:

Often times in repetitive assembly, human error may occur where tightening of a fastener is missed. To assist the user, and confirm completion of all tightening work torque tools can be equipped to verify tightening completion:

  • Limit Switch/Micro Switch: Features a small contact relay switch that is triggered when torque set is achieved. Signal is then relayed via cable to a PLC or Count Checker (CNA-4mk2). Work process can be counted and confirmed. (RTDLS/RNTDLS, QLLS, CLLS, TiQLLS, PQLLS, PCLLS, CSPLS, SPLS-N, RSPLS) [Ref: RTDLS video and CNA-4mk2 video]
  • Radio Frequency (RF) Model FH Wireless: Features wireless transmitter that counts number of fasteners, and sends signal via 2.4 GHz frequency to receiver box, which can then be connected to PLC or CNA-4mk2 Count Checker. (FH256MC) [Ref: CNA-4mk2 video]
  • Ink/Paint Marking Torque Wrench: Specialty wrench that incorporates a marker into a specialize socket that moves down and marks the top/side of fastener only when torque value is achieved. Also available with FH transmitter.
  • Counting with Applied Torque Data: Features capture of actual applied torque which is sent along with counting feature.

Manual Torque Tools for Measuring/Inspection

Basic torque tools for measuring feature a scale with an indicator pointer or a digital display. Used primarily to determine the torque of a fastener that has already been tightened, these tools perform a loosening or re-tightening test. Loosening requires that the fastener be loosened and then it would have to be re tightened after inspection. The more popular method is re-tightening which requires the fastener be tightened again just until the fastener starts to move.

Indicating Torque Tools for Measuring

  • Flat Beam (Torque Wrench): Deflection beam scale with main pointer.
    • Attributes: Durable and accurate when pulled at force point, measures deflection of spring on scale plate. Some variation possible in accuracy of reading scale.
  • Dial Indicating: Dial scale with main and memory pointer.
    • Attributes: Easy to use, comfort handle, not length dependent with torsion bar. Some variation possible with reading scale but has memory pointer to retain peak torque.
  • Digital: Digital display with data capture.
    • Attributes: Easy to use, captures peak torque with strain gage, exact confirmation and storage of peak torque.

Types of Heads

Basic analog wrenches feature non-ratcheting square drive and digital features ratcheting square drive.

  • Tohnichi Interchangeable Type Wrenches: Basic indicating wrench has different round root ends that accepts a variety of Tohnichi head types, which can easily be removed or exchanged. [Ref: CDB-S, CSF/CF, CEM3-G, CTB2-G and Interchangeable Head]
  • European Interchangeable Head Standard: Specialized version of DB-S that have DIN end adapter for European market.
  • Fixed Ratcheting Head Wrenches: Wrench has a ratcheting square drive head fixed to the body. [Ref: QF/QFR]

Type of Data Captured

Basic digital torque wrench and driver will have run/peak mode. In Peak mode the tool will capture the peak torque and store it in the tool's memory. [Ref: CEM3-G]

  • CEM3-P: Specialty Version designed to capture data in organized preprogrammed torque routes.
  • CTB2-G: Specialty Version designed only for re tightening tests, has integrated gyro sensor that helps detect exact moment fastener starts to move, software calculates and stores the actual original torque value before moving the fastener, which utilizes the T-point method.

Types of Data Download

  • Blue tooth: Features Blue tooth module that allows for data to be sent wirelessly to PC [Ref: CEM3-G-BT]
  • Infrared: Features infrared port that transfers data via data tank which is then cabled to PC [Ref: STC2-G]
  • RS232: Standard feature for digital wrenches download data via cable to PC: [Ref: CEM3-G, CTB2-G, CEM3-P]
  • Excel Receiver Software: Simple data transfer program that moves data from Tohnichi equipment to Excel worksheet. Provided with purchase of cable.

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