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The integration of robots into manufacturing environments has delivered enormous productivity and quality benefits across virtually every industry. However, as robots operate at higher speeds, handle more valuable workpieces, and share physical space with human workers in collaborative settings, the management of unexpected mechanical interactions has become a critical engineering challenge. Two products from SCHUNK's automation technology portfolio directly address this challenge: the anti collision sensor, which protects robots and their end-of-arm tooling from damage caused by unexpected mechanical overloads, and force sensors, which give robots the sense of touch they need to perform contact-sensitive tasks with the precision, compliance, and safety that human-robot collaboration and assembly applications require. SCHUNK, the global competence leader for gripping technology and automation technology, has developed industry-leading solutions in both of these product categories as part of its mission to enable productive, intelligent, and safe automation for manufacturers worldwide.

SCHUNK Intec India Private Limited brings these advanced protection and sensing technologies to Indian manufacturers through a team of automation specialists with deep product knowledge and application expertise. As Indian manufacturing companies increase their investment in robotics and automation, the importance of protecting those investments with appropriate collision protection and equipping robots with the sensory intelligence needed for advanced applications is growing rapidly, and SCHUNK Intec India is well positioned to support this growing demand with advanced automation solutions such as hydraulic clamp systems and robotic sensing technologies. 

SCHUNK Anti Collision Sensor Technology for Robot Protection

An anti collision sensor, referred to in SCHUNK's product terminology as an anti-collision unit, is a mechanical protection device installed between the robot flange and the end-of-arm tool that detects overload events caused by accidental collisions and triggers an immediate protective stop of the robot motion before the collision forces reach damaging levels. The economic case for collision protection is straightforward: end-of-arm tools for robotic applications are often expensive custom assemblies, robot flanges are precision mechanical components, and the workpieces and fixtures involved in robot applications can be high-value items. A single unprotected collision can result in repair or replacement costs that far exceed the cost of the anti collision sensor that would have prevented the damage.

SCHUNK's anti-collision units are designed to absorb the mechanical energy of a collision event through a controlled deflection mechanism that moves the end-of-arm tool relative to the robot flange when overload forces are detected. This deflection triggers a switch signal that is transmitted to the robot controller, initiating a stop before structural damage occurs. After the collision event has been addressed and the cause identified and corrected, the anti collision sensor can be manually or pneumatically reset and the robot returned to service quickly, minimizing downtime. The units provide multi-directional overload protection, detecting collision forces in all directions including lateral, axial, and torque overloads.

Anti Collision Sensor Integration and Safety Compliance

SCHUNK's anti collision sensor products are designed for straightforward integration with robot controllers and safety PLCs through standard digital I/O signal interfaces. The switch outputs of the anti collision sensor meet the requirements of relevant machinery safety standards, enabling integration into robot safety control architectures that implement Category 0 or Category 1 stops in response to the collision detection signal. For collaborative robot installations where human workers operate in close proximity to robot motion, the anti collision sensor provides an additional layer of mechanical protection that complements the force and speed monitoring built into the cobot controller, enhancing the overall safety of the human-robot collaboration system.

Product Range and Size Selection

SCHUNK's anti collision sensor range covers robot payload classes from small collaborative robots with payloads of a few kilograms to large industrial robots handling payloads of 200 kilograms and above. The units are compact and add minimal weight to the robot's total end-of-arm payload, preserving payload capacity for tooling, grippers, and hydraulic clamping unit accessories. Trigger forces are matched to the payload class of each unit, ensuring that the anti collision sensor activates reliably in genuine collision scenarios while providing adequate immunity to the acceleration and deceleration forces of normal robot operation.

SCHUNK Force Sensors for Intelligent Robot Control

Force sensors measure the forces and torques acting on a robot's end-of-arm tool or workpiece in all six degrees of freedom, providing a comprehensive picture of the mechanical interactions taking place during robot operations. This sensory capability transforms a robot from a purely position-controlled machine that moves blindly through a programmed trajectory into a force-aware system that can respond to the actual mechanical reality of what it is doing, adjusting its behavior in real time based on the forces it measures.

SCHUNK's 6-axis force-torque sensor FTS, which was awarded first place in the Robotics, Handling, and Assembly Technology category of the Industrial Production Products of the Year 2026 competition, represents the state of the art in industrial force sensor design. The FTS measures forces and torques in all six degrees of freedom simultaneously with high resolution and low noise, providing the clean, reliable measurement data that force-controlled robot applications require. The sensor is available in a range of force and torque measurement ranges matched to different robot payload classes, and interfaces with robot controllers and external processing systems through standard digital communication protocols.

Read also: SCHUNK Lathe Chuck, Tool Changers & Precision Holders

Force Sensor Applications in Precision Assembly

Precision assembly applications represent one of the most important use cases for force sensors in manufacturing robotics. When a robot must insert a component into a closely toleranced bore, engage a snap-fit feature, or seat a connector onto a PCB, the ability to monitor contact forces in real time and adjust the robot's motion path to maintain contact forces within safe limits is the difference between a reliable automated assembly process and one that produces damage or rejects. SCHUNK's force sensors enable spiral search strategies, compliance control, and contact force monitoring that make robot-automated assembly of tight-tolerance parts reliable and repeatable without the need for expensive precision fixturing.

Force Sensors for Safe Human-Robot Collaboration

In collaborative robot applications where humans and robots share a workspace, force sensors provide a critical additional layer of contact safety beyond the basic force and power limiting built into cobot controllers. By monitoring contact forces on the end-of-arm tool and workpiece, force sensors can detect contact between the robot and an unexpected obstacle, including a human worker, with greater sensitivity and at lower contact forces than the robot's own internal monitoring. This enhanced contact detection capability enables robot systems to operate at higher speeds while maintaining the contact force limits required by human-robot collaboration safety standards.

SCHUNK Intec India's Support for Advanced Automation

SCHUNK Intec India provides Indian manufacturers with access to the full range of SCHUNK anti collision sensor and force sensor products, supported by application engineering consultation, integration support, and after-sales technical service. The India team has experience applying SCHUNK's sensing and protection technologies across a wide range of automation challenges in the Indian manufacturing sector, from automotive assembly to electronics manufacturing, including applications requiring hydraulic clamp integration for secure workholding, and is well-positioned to help customers identify and implement the right sensing and protection solutions for their specific needs.

Conclusion

SCHUNK's anti collision sensor and force sensors bring the dimensions of safety, intelligence, and process awareness to robot automation systems, enabling manufacturers to operate robots with greater confidence, handle more delicate parts, perform more demanding assembly tasks, and collaborate more safely with human workers. For Indian manufacturers building advanced automation systems, SCHUNK Intec India provides the products, the expertise, and the support needed to realize the full potential of intelligent robot automation with intelligent automation components such as force sensors, anti-collision units, and hydraulic clamping unit solutions.