Industry Spotlight

Designing for Safety: How the Rise of Collaborative Robots Is Redefining Fastening Standards

Collaborative robots, or cobots, have changed the landscape of modern manufacturing. Unlike traditional industrial robots that operate behind safety fences, cobots share the same workspace as humans. They are designed to assist, not isolate.

Robotics arm in action.

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The Challenge of Building Safe Collaboration

In cobot manufacturing, precision is not just about efficiency. It is about trust. A fastener that loosens over time, even by a fraction, can compromise safety sensors, alignment accuracy, or motion control. Engineers must ensure that each component can handle vibration, temperature fluctuations, and continuous mechanical stress while remaining easy to assemble and service.

Robotic arm with yellow sensor machining a spinning metal part in an industrial workshop with motion blur effect.

Traditional fasteners often fail to deliver this balance. They can be difficult to disassemble, prone to galling when over-tightened, and may require separate locking elements or adhesives. The result is a longer assembly process, inconsistent torque control, and unnecessary complexity in maintenance cycles.

Cobots operate in a unique environment that combines high precision with direct human interaction. This means fasteners need to do more than hold parts together. They must ensure long-term mechanical integrity, maintain compliance with safety standards, and allow quick access for inspection or upgrades.

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Smarter Fastening with Proven Solutions

With our range of multifunctional fasteners we address these specific needs. The ecosyn® fix and ecosyn® grip series provide high clamp load capacity and superior vibration resistance, allowing for consistent joint strength under repeated load cycles. Their design also simplifies assembly, reducing the number of single components and lowering processing time.

Ribbed lock washers and thread-forming screws add another layer of reliability. They prevent loosening without damaging sensitive surfaces, making them ideal for coated or lightweight materials. Together, these solutions create a fastening ecosystem that supports both safety and efficiency.

In collaborative robotics, safety is not an add-on. It is engineered into every joint, fastener, and assembly decision. When humans and robots work side by side, long-term fastening integrity becomes the foundation of trust, precision, and compliance.

Peter Witzke, VP Engineering, Bossard Group

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Beyond Components: Engineering Expertise

Hardware alone cannot guarantee safety. What makes the difference is an integrated engineering approach. Through the Assembly Technology Expert services, Bossard supports manufacturers from the concept stage to final validation.

With tools such as Expert Walk and Expert Test Services, engineers gain access to on-site audits, torque and vibration testing, and optimization recommendations. This process ensures that every fastener used in a cobot design meets the required mechanical and safety criteria before full-scale production.

White robotic arm with blue accents attached to a wheeled base.

A Case in Point: Universal Robots

Our partnership with Universal Robots illustrates the value of combining quality components with technical support. When Universal Robots needed a more consistent fastening process for their compact robotic arms, we helped them transition to pre-coated screws that eliminated manual gluing. The improvement led to faster assembly, reduced variability, and stable torque performance, all of which are essential in maintaining safety certification.

Many parts are assembled manually, making consistent quality a challenge. Together with Bossard, we introduced pre-coated screws that eliminate manual gluing. The result is reliable, repeatable quality, no matter who builds the robot.

Anders Lassen, Production Technology Manager, Universal Robots

The Takeaway

As robots become more collaborative, the safety margin built into every joint becomes the foundation of trust between man and machine. The evolution of fastening technology is at the heart of that progress.

Through advanced engineering services and precision fasteners, Bossard helps cobot manufacturers design for both performance and peace of mind. When safety and speed must coexist, it all starts with the right fastening strategy.

An icon displaying a robotic arm in black and blue color

Fasteners for Robotics

Find out more about specific fastening solutions for robotic manufacturing, including collaborative robots and industrial robots.

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