Grinding built into the system: How integrated process chains are driving precision in modern grinding technology

As demonstrated at GrindingHub 2026 in Stuttgart, the industry's latest innovations highlighted how the seamless integration of machinery, measurement technology, process expertise, and tooling is reshaping manufacturing efficiency and quality.

Across the exhibition, leading suppliers showcased solutions designed to optimise the entire grinding process chain. From advanced brake disc machining concepts and in-machine measurement systems to next-generation CBN grinding wheels and sustainable tooling solutions, exhibitors emphasized a common theme: precision can only be achieved when every component of the manufacturing process works together as a unified system.

Precision comes from teamwork

When it comes to tight dimensional tolerances and high-precision surfaces, grinding remains a key technology in modern manufacturing. However, the foundation of stable and cost-effective processes extends beyond the grinding operation itself. The precise interaction between machine tools, grinding media, process expertise, and measurement technology has become increasingly important, particularly for complex workpieces such as brake discs.

Brake discs are highly sensitive to mechanical and thermal stresses. Excessive process forces can quickly lead to distortion, resulting in deviations in axial run-out and parallelism. As a result, modern grinding processes are designed to ensure gentle and highly reproducible material removal.

One approach gaining traction across the industry is the integration of the entire process chain. At GrindingHub 2026, Nagel Technologies GmbH showcased a manufacturing concept in which coating and grinding processes are designed as a single integrated system. Machines, abrasives, and grinding tools are carefully matched to one another, while the company assumes responsibility for the complete machining process.

According to Andreas Schmohl, Managing Director of Elgan Diamantwerkzeuge GmbH & Co. KG and Head of the Superfinishing Division at Nagel Technologies, grinding today is no longer simply about removing material but about achieving the controlled interaction of all process components. The objective is to minimise process forces in order to prevent deformation while maintaining the highest levels of precision.

The approach utilises double-sided grinding, enabling both sides of a brake disc to be machined simultaneously. By distributing loads evenly, local force peaks are reduced, resulting in greater process stability and consistent quality throughout the service life of self-sharpening grinding segments.

The versatility of the technology is evident in its application range. Nagel Technologies has already produced approximately 40,000 coated brake discs in around 300 variants for customers during prototype development and pre-production projects. A single machine can manufacture brake discs for passenger vehicles and trucks, as well as coated cast-iron and ceramic variants, simply by changing the abrasive. Such developments highlight how grinding is evolving into an integrated key technology where tooling, machine design, and measurement systems collectively determine both quality and cost efficiency.

Measurement instead of rework

Another major trend highlighted at GrindingHub 2026 was the growing role of integrated measurement technology in grinding operations.

Renishaw presented probe solutions that provide geometric feedback directly within the quality control loop of grinding machines. These systems enable manufacturers to determine the position, orientation, and condition of workpieces during machining. By capturing actual material dimensions before grinding begins, manufacturers can eliminate unnecessary "empty cuts" and optimise cycle times. Final inspections can also be performed directly inside the machine workspace.

Dr. Jan Linnenbürger, Business Development Manager EMEA at Renishaw, noted that integrating geometric measurement into grinding machines allows users to maintain high process capability even when operating conditions fluctuate. The result is improved process reliability and increased production efficiency.

One of the distinguishing characteristics of Renishaw's technology is its high precision in three-dimensional measurements. The company's probe systems achieve repeatability levels below 0.25 micrometers while maintaining a compact and robust design suitable for harsh grinding environments.

To accommodate confined machine spaces, Renishaw also offers motorised measuring arms capable of reaching multiple measurement points. Complementing these solutions are high-precision enclosed position-measurement systems specifically designed for grinding applications. Together, these technologies help manufacturers achieve micron-level accuracy and consistent grinding performance.

Optimised CBN grinding wheels improve productivity

Tooling innovation also featured prominently at the exhibition, particularly in rotor machining applications.

Following several years of development, the Kapp Niles Group introduced specialised CBN roughing and finishing grinding wheels designed specifically for cast rotor machining. These tools complement the company's existing CBN portfolio and address the increasing demand for efficient machining of cast components.

For roughing operations, the newly developed abrasive structure improves coolant delivery and provides larger chip spaces, significantly reducing heat generation during grinding. Industrial applications have demonstrated increased material removal rates while simultaneously lowering thermal loads on the workpiece. The combination has enabled grinding cycle times to be reduced by as much as 30 percent.

The technology also makes it economically feasible to process cast rotors with substantial excess material, such as pre-cast components containing 2–4 millimeters of additional stock. In many cases, this eliminates the need for pre-machining through milling, simplifying production workflows and reducing manufacturing costs.

For finishing operations, Kapp Niles developed an optimised CBN grit specifically engineered for cast materials. The result is a significant increase in tool life while maintaining consistently high component quality.

The grinding wheels can be deployed individually or as part of an integrated performance package, enhancing the productivity of RX machine platforms used in high-volume rotor production. Existing tooling systems can also be upgraded, allowing manufacturers to benefit from the technology without major equipment investments.

According to Andreas Paatz, Head of Service, Tools, and Digitalisation at Kapp Niles, customer feedback indicates that the optimised CBN solutions have successfully addressed industry requirements by improving efficiency while supporting increasingly demanding production environments.

Reliability through an integrated supply chain

Beyond machine tools and grinding processes, exhibitors also emphasised the importance of supply chain reliability and sustainable material sourcing.

Among the international participants at GrindingHub 2026 was Ceratizit, which highlighted its "Rods & Preforms" and "Private Label" business units. Under the theme "Reliability Redefined," the company demonstrated its fully integrated value chain, spanning everything from powder production to finished semi-finished products for tool manufacturers.

A major focus was placed on ensuring material availability while maintaining premium product quality. Recent portfolio expansions include new ultra-fine carbide grades for solid carbide milling applications and advanced milling blanks for micro-machining applications featuring up to seven internal cooling channels.

These cooling channels enable targeted coolant delivery directly to the cutting zone, improving milling performance, extending tool life, and maintaining the structural stability of the finished tool.

Sustainability also featured prominently in Ceratizit's presentation. The company now offers carbide substrates manufactured using recycled tungsten carbide powder with a recycling content of up to 99 percent, supported by advanced metallurgical technologies and renewable energy sources. Such developments reflect growing industry efforts to combine performance, supply security, and environmental responsibility within the tooling sector.

Integrated technologies shape the future of grinding

A key takeaway from GrindingHub 2026 was that achieving high-precision grinding increasingly depends on the coordinated interaction of every element within the manufacturing process. This is particularly important for complex components, where process stability, dimensional accuracy, and productivity must be balanced simultaneously.

The technologies presented throughout the exhibition demonstrated how integrated process chains—combining advanced machine tools, precision measurement systems, optimized grinding media, and specialised process expertise—can significantly enhance manufacturing performance. Innovations such as in-machine measurement solutions and next-generation CBN grinding wheels are helping manufacturers reduce heat generation, shorten machining times, improve quality, and increase process reliability.

As manufacturing requirements continue to evolve, grinding is becoming far more than a standalone machining process. It is emerging as a comprehensive production technology in which interconnected systems, intelligent process control, and advanced tooling work together to deliver precision, efficiency, and long-term competitiveness.