Industrial Tools
Torque Systems

Tohnichi RTDLS / RNTDLS Rotary Slip Torque Driver with Limit Switch

Capacity 120 / 260 / 500 cNm

Error-proofing (PokaYoke) torque screwdriver with limit switch output to eliminate missed tightening


Ideal for assembly processes with torque monitoring. After reaching the set torque, the limit switch transmits a trigger signal. This can be picked up by means of a PLC, for example. At the same time, the slip clutch is activated, making over-torque impossible.




  • Series RTDLS are adjustable models. Along the micrometer scale, the desired torque can be easily and quickly adjusted. A locking mechanism prevents unintentional torque adjustment during use.
  • Series RNTDLS are fixed models without scale and are particularly suitable for repetitive tightening operations at the same torque.


An additional auxiliary tool (sold separately) is available for each of the 500 cNm models for easier power transmission. For counting tightening operations, the LS screwdriver can be connected to an optional 'CNA-4mk3', for example.




  • Rotary slip prevents over-torque
  • Accuracy acc. to EN ISO 6789 (Type II)
  • Curl cord can be extended to approx. 2m in full extension
  • Limit switch specification is AC/DC 30V below 1A
  • 1/4“ female hex insert for standard bits according to DIN 3126 E 6.3 / ISO 1173
  • RTDLS series with traceable calibration certificate (ISO, JCSS) incl.


Options / Accs / Spares


  • Female connector #WA5219K (female) to match limit switch connector (male).
  • RTDLS series: imperial (lbf·in) or metric (kgf·cm) scale on request.
  • RNTDLS series: preset delivery on request. Then please specify torque value in the order (e.g. RNTDLS260CN X 200CN).
  • For model 500CN an additional T-handle (#1031) is available for easier power transmission.
  • Electronic tightening counter CNA-4mk3 (Count Checker).
RTDLS – Centi-Newtonmetre
Model Part No. Torque Range [cN·m] Graduation L' [mm] Weight [kg]
RTDLS 120 CN T202013-LS 24 - 120 1 184 0.34
RTDLS 260 CN T202017-LS 52 - 260 2 201 0.45
RTDLS 500 CN T202020-LS 100 - 500 2.5 212 0.54
RTDLS – Pound-inch
Model Item No. Torque Range [lbf·in] Graduation OvL [mm] Weight [kg]
RTDLS10I T202016-LS 2 - 10 0.1 184 0.34
RTDLS22I T202019-LS 6 - 22 0.2 201 0.45
RTDLS40I T202022-LS 10 - 40 0.5 212 0.54
RNTDLS (preset)
Model Item No. Torque Range [cN·m] Torque Range [lbf·in] Torque Range [kgf·cm] L' [mm] Weight [kg]
RNTDLS120CN T202104-LS 40 - 120 4 - 10 4 - 12 166 0.32
RNTDLS260CN T202105-LS 100 - 260 9 - 23 10 - 26 167 0.39
RNTDLS500CN T202106-LS 200 - 500 18 - 44 20 - 50 175 0.48

Table showing specifications by the manufacturer. It is recommended to primarily use in medium performance range (approx. 1/3 to 4/5 of rated capacity). If you regularly worked close to the limit of load (maximum capacity), a larger model or tool might be more advisable.


All technical data without guarantee, errors and omissions excepted.

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