ATI Mini45 Force/Torque Sensor

Overview and Use Cases

The ATI Mini45 Force/Torque Sensor is a six-axis transducer that simultaneously measures three orthogonal force components (Fx, Fy, Fz) and three orthogonal torque components (Tx, Ty, Tz). It is engineered for applications where precise contact force feedback is critical, including:

• Collaborative robot assembly – enabling cobots to detect and respond to unexpected contact forces, improving safety and part-fit quality.
• Grinding and polishing – maintaining consistent contact force against workpiece surfaces.
• Medical and surgical robotics research – providing high-resolution force data for haptic feedback and tissue interaction studies.
• Quality inspection – detecting insertion forces during peg-in-hole or connector-mating tasks.
• Human–robot interaction research – measuring interaction forces to refine control algorithms.

Its compact diameter and low profile allow it to be mounted between a robot flange and an end-effector without significantly altering the robot's reach or payload envelope.

Key Technical Details

Based on publicly available product documentation, the Mini45 is characterized by:

• Measurement axes: 6 (Fx, Fy, Fz, Tx, Ty, Tz)
• Force range: Reportedly up to approximately 290 N per axis (exact values vary by calibration range selected)
• Force resolution: Approximately 0.1 N (calibration-dependent)
• Communication interfaces: EtherCAT and CAN bus, standard
• Form factor: Compact disc-shaped body suited to small and medium collaborative arms
• Output: Digital, via the ATI Net F/T or similar signal conditioner/interface hardware

ATI offers multiple calibration ranges for the Mini45 family, allowing users to trade off maximum load capacity against resolution depending on their application. Specific torque ranges and overload ratings should be confirmed against ATI's current datasheet, as these figures are subject to revision.

Comparison to Related Products

Within ATI's portfolio, the Mini45 sits between the smaller Nano17 (designed for very light-duty and micro-assembly tasks) and the larger Gamma or Delta series sensors intended for heavier industrial robots. Compared to the Nano17, the Mini45 offers a higher force range suitable for typical cobot payloads, while remaining smaller and lighter than the Gamma series.

Among competitors, similar six-axis force/torque sensors are offered by:

• Robotiq FT 300-S / FT 150 – designed specifically for Universal Robots and other cobots, with plug-and-play URCap software integration.
• Bota Systems SensONE – a research-grade sensor emphasizing high bandwidth and low noise.
• OnRobot Hex-E/H – integrated force/torque sensing with tool-changer compatibility.

The Mini45 is generally regarded as a high-accuracy, industrial-grade option with a strong track record in both manufacturing and research environments, though it typically requires more integration effort than cobot-specific plug-and-play alternatives.

Market Context and Target Buyers

The ATI Mini45 is positioned in the mid-to-upper tier of the force/torque sensor market, reflecting its precision engineering and industrial reliability. Target buyers include:

• Systems integrators building force-controlled assembly or finishing cells around collaborative or light industrial robots.
• University and corporate R&D labs requiring traceable, high-resolution force data.
• Medical device and surgical robotics developers needing reliable six-axis sensing for regulatory-grade testing.

Pricing is not publicly listed by ATI and is typically obtained through authorized distributors; the sensor is generally considered a capital investment rather than a commodity component.

Deployments and Notable Adoption

ATI Industrial Automation is one of the most established names in robotic force/torque sensing, and the Mini45 platform has reportedly been adopted across automotive assembly, electronics manufacturing, and academic robotics research worldwide. Specific customer names and deployment volumes are not publicly disclosed by ATI as of available reporting.

Future Outlook

As collaborative robotics continues to expand into applications requiring finer force control—such as flexible electronics assembly, soft material handling, and human-assistive devices—demand for compact, high-resolution six-axis sensors like the Mini45 is expected to grow. Ongoing industry trends toward faster EtherCAT cycle times and tighter integration with robot operating systems (ROS 2, OPC-UA) suggest that future iterations of the Mini45 family may further enhance digital connectivity and ease of software integration.