A3/A4 Semi-Automatic Airtork

  • Semi-Automatic Type: Air motor mounted on torque wrench allows for fast provisional tightening with the accuracy of final tightening by torque wrench performed by hand.
  • This tool replaces the conventional two-step tightening process of the pneumatic tool followed by clicking torque wrench into one tool with greater efficiency.
  • Changing tightening torque is simple by turning the knob to adjust the scale on the handle.
  • Button engages air motor; Release after provisional tightening then use hand force until torque wrench “clicks” at required torque setting.
  • Easy calibration performed on standard torque wrench tester such as Tohnichi’s DOTE4-G. Since the torque wrench is controlling the final applied torque no joint simulator is required.
  • Features a ratchet square drive that accommodates anti-vibration sockets (not included).
  • A4 Version features new body style with 40% reduction in weight, and operates at lower air pressure (previous 0.6 Mpa now 0.5Mpa)
  • No reaction arm needed–Up to 180Nm (or equivalent) with no reaction force.
  • A drop in airline pressure will not affect applied torque.
  • LS version is available with the limit switch, which creates an error-proofing system when used with CNA-4mk3 count checker (sold separately). When torque setting is achieved, the limit switch is triggered confirming tightening completion–no more missed fasteners!
  • For larger motor and more provisional tightening see model series AC3.

American Models

SI Models

Metric Models

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