
Atlas Copco Tensor ETT STR – a two-trigger electric angle nutrunner with high accuracy and built-in operator feedback.
Atlas Copco Tensor ETT STR is a two-trigger electric angle nutrunner designed for precise, reliable tightening in controlled applications.
It is built on the modular Tensor STR platform, with a front transducer, built-in gyroscope, and operator feedback through loudspeaker, vibrator, and high-visibility LEDs.
What is Atlas Copco Tensor ETT STR used for?
It is suited for controlled tightening applications that require a precise electric angle tool with clear operator feedback.
What is the benefit of the front trigger?
The front trigger allows pre-tightening and final-tightening with one tool, and it can also be used as a safety trigger.
What are the main working specs?
Torque is 4-50 Nm, speed is 780-1,690 rpm, and the drive is 3/8″ square drive.
How does the tool communicate with the operator?
It provides feedback through a built-in loudspeaker, vibrator, and high-visibility LEDs.
| Model | Square drive (in) | Torque range (Nm) | Torque range (ft lb) | Speed (r/min) | Weight (kg) | Weight (lb) | Length (mm) | CS distance (mm) | Ordering No. |
|---|---|---|---|---|---|---|---|---|---|
| ETT STR61-20-10 | 3/8 | 4-20 | 3-15 | 1,690 | 1.6 | 3.6 | 384 | 24 | 8436666020 |
| ETT STR61-30-10 | 3/8 | 6-30 | 4-22 | 1,300 | 1.6 | 3.6 | 384 | 24 | 8436666030 |
| ETT STR61-40-10 | 3/8 | 8-40 | 6-30 | 1,015 | 1.7 | 3.7 | 384 | 24 | 8436666040 |
| ETT STR61-50-10 | 3/8 | 10-50 | 7-37 | 780 | 1.7 | 3.7 | 384 | 24 | 8436666050 |
Full accessory tables from the Atlas Copco catalogue. You can also download the attached PDF.

The HADI Technologies team will help you select the right configuration, verify application requirements and provide technical information about Atlas Copco Tensor ETT STR Two-Trigger Angle Nutrunner.
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