STRwrench smartHEAD 400 Nm

What is the STRwrench electronic torque wrench and how does it work?

The Atlas Copco STRwrench is a next-generation electronic torque wrench designed for smart and connected manufacturing environments. It measures torque digitally through advanced transducers located in the digitalized smartHEAD, sending real-time data to the wrench controller. This setup enables accurate and traceable torque measurements, ensuring every tightening is consistent and compliant with quality standards. The STRwrench is part of the Smart Integrated Assembly ecosystem, allowing users to access and configure the wrench directly through a web browser.

Is the STRwrench more accurate than a mechanical torque wrench?

Yes, the STRwrench delivers significantly higher accuracy and repeatability than traditional mechanical torque wrenches. Thanks to digital transducers and non-length-dependent measurement, it ensures that readings remain precise even under varying operator conditions. The STRwrench measures accurately from as low as 5% of its nominal torque, guaranteeing control and consistency even in light-torque applications.

How do you use the STRwrench electronic torque wrench correctly?

Using the STRwrench is straightforward. Operators can set up and monitor tightening operations directly from the colored touchscreen or via a web-based GUI. The wrench provides instant operator feedback through LEDs, sound, and vibration, guiding users to reach the exact torque target. The rotating smartHEAD (90°) and ergonomic handle make it easy to operate even in tight spaces, improving accessibility and reducing fatigue during repetitive tasks.

Does the STRwrench need calibration, and how often?

Calibration is required at least once a year— but it’s simplified compared to conventional torque wrenches. Because the smartHEADs are fully digitalized, only the smartHEAD itself needs calibration, not the entire wrench. This makes maintenance faster, reduces downtime, and ensures each measurement remains traceable and compliant. Each smartHEAD can be swapped instantly while the wrench remains powered on, maintaining continuous calibration integrity and uptime in production.

What torque range should I choose for my application?

The STRwrench offers modular flexibility through its hot-swap smartHEADs, meaning one controller can cover multiple torque ranges. Operators can easily switch heads depending on application needs, from low-torque quality checks to high-torque assembly tasks. This approach reduces the number of tools required on the production line and optimizes ROI by covering various torque levels with fewer devices.

How reliable is the STRwrench electronic torque wrench?

Reliability is at the core of the STRwrench design. It’s tested against drops and impacts, ensuring durability even in harsh industrial environments. The wrench offers extended battery life and remains connected via Wi-Fi and Bluetooth, so it’s always ready to perform. In addition, the new locking system supports over 50,000 smartHEAD swaps, guaranteeing consistent measurement integrity and long product lifespan.

What’s the difference between digital, electronic, and smart torque wrenches — and where does STRwrench fit in?

While digital and electronic torque wrenches provide digital readouts, the STRwrench family takes it further — it’s a smart torque wrench built for the Industry 4.0 era. It not only measures torque but also communicates, analyzes, and integrates data across connected production systems. With native Open Protocol support, barcode and tag management, and compatibility with Atlas Copco’s QA Supervisor, Power Focus and ToolsNet 8, the STRwrench enables real-time data traceability and seamless system integration.

Can the STRwrench be used in environments with limited connectivity or network interruptions?

Yes, the STRwrench is designed to operate effectively even in environments with limited or no network connectivity. It features an integrated controller that allows it to run in standalone mode, without needing to be connected to the Power Focus 6000 system. Users can program and update the wrench via a USB-C connection to a laptop, making it ideal for offline use. Additionally, Atlas Copco provides firmware packages for offline download, ensuring that tools can be maintained and updated without internet access. The STRwrench also includes onboard memory capable of storing up to 50,000 operations, allowing uninterrupted work and traceability even during network downtime.

What happens if I over-tighten or exceed the smartHEAD’s nominal torque?

If the STRwrench detects overload or incorrect torque, it immediately alerts the operator and saves the event data in the controller. Thanks to the digital smartHEAD system, users can replace the head quickly without removing the entire wrench from the assembly line thus preventing downtime. The wrench’s fast back-up feature ensures operational continuity and maintains full data traceability even after an error.

Which industries or teams benefit most from using the STRwrench?

The STRwrench is ideal for production, quality assurance, R&D, and prototyping. In production, it enhances process reliability and minimizes rework through connected, traceable operations. In quality control, its patented residual torque algorithm delivers operator-independent joint checks, providing objective data and ensuring consistent quality. For R&D and prototyping, Live Trace enables real-time joint behaviour analysis — helping engineers define optimal torque specifications.Whether in automotive, aerospace, or general assembly, the STRwrench electronic torque wrench delivers precision, connectivity, and durability that meet the toughest industry standards.