ETD SR21-16-I06-T25: Electric nutrunner - Atlas Copco Liberia

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ETD SR21-16-I06-T25: Electric nutrunner

8436 4224 16


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Incredibly strong and powerful for its size, the SR21 nutrunners offer an unmatched power to weight ratio. This super compact power package is ideal for use in application where a shorter tool is needed. Suitable for safety critical application, high cycle rates and tough joints.

Features & benefits

  • High performance in super compact format.
  • Torque transducer ensures accurate tightenings and traceability.
  • Excellent ergonomics with high power-to-weight ratio.
  • Signal lights all around the front of tool for operator feedback, avoiding errors.
  • Configurable button for increase operator interaction to the tightening system.
  • ESD certified."

Technical data

Technical Specifications
Model typeStraight
Speed1460 r/min
Weight1.2 kg
Torque range3.5 - 16 Nm
Length352 mm
CS distance24 mm
Motor power1500 W
Motor voltage200 Volt
Motor voltage type3 a.c.
Vibration value<2.5 m/s²
Vibration standardISO28927-2
Sound standardISO15744
Sound pressure<70 dB(A)


  • Suspension yoke - For rear end of tool

    Suspension yoke

    For rear end of tool

    4220 4410 80

  • Suspension yoke - For front end of tool

    Suspension yoke

    For front end of tool

    4220 4409 80

  • Support handle

    Support handle

    4220 4347 80

  • Safety lever

    Safety lever

    4220 4338 83

Atlas Copco USA - Eco Design
Eco Design and environmental aspects of product development is nothing new to us. Atlas Copco has a history of developing modular tools with a deep respect for materials and natural resources used in the products. We always strive to maximize the functionality of the product and at the same time minimize the energy consumption to make sure the environmental impact is as low as possible. By developing accurate tools we make sure the customer never has to waste time or energy to re-do an operation. For battery tools we also have the option to connect multiple tools to one controller and thereby decrease the standby energy consumption considerably.

Eco Design is all about minimizing a product's environmental impact during its entire life-cycle, including extraction of raw materials, manufacturing, customer usage and recycling while maximizing the productivity.

Our approach to Eco Design

Eco Design
Within Industrial Technique we approach Eco Design from six different areas. These form the core of the Eco Design review performed in each product development project. This procedure helps define Eco Design targets early in the project.
    We avoid hazardous substances and materials listed on the Atlas Copco Restricted & Prohibited list.
    We use materials and structural features to minimize the product’s weight and invest in strong, durable materials to protect the product.
    We avoid mixing materials since blends inhibit recycling and consider fastening methods to facilitate disassembly.
    We consider how the final product will be used in order to minimize energy and resource consumption in the use phase, in production and during transportation.
    We design with recycling in mind. We promote repair and upgrading, especially for long lasting and system-dependent products. To increase the customer’s awareness regarding the importance of recycling, we are now including Recycling Instructions in the Product Information (PI).
    We prepare for upgrading, maintenance and recycling, through labelling, modularization and information in the product information.
This is how we do Sustainable Productivity in practice!


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