Metal-cutting specialist and manufacturing solutions provider
Sandvik Coromant has introduced the CoroTurn PI, a new family of internal turning tools combining precision chip breaking, all-directional turning and a unique tool holder design to unlock significant productivity gains. Designed for high process security, the tool concept is ideal for demanding operations in ISO P, ISO M and ISO K materials.
Machining internal features such as holes in shafts, ring gears or connection hubs presents several challenges. Vibration, deflection and chip build-up are common issues that can compromise both productivity and quality. CoroTurn PI addresses these challenges with a high-precision chip breaker, multiple coolant configurations and support for both roughing and finishing operations in a single tool, delivering quality and efficiency in demanding internal turning applications.
Sascha Bolling, global product manager at Sandvik Coromant, said: “This tool is all about process security. Internal turning is complex, but a dedicated tool like CoroTurn PI will not only prevent cutting issues, it will also boost your productivity, output and cost-efficiency.”
At the heart of CoroTurn PI is a unique tool holder design with two separate insert seats, one for roughing and one for finishing. That means fewer tool changes, reduced cycle times and higher output. Åke Nilsson, a global product application specialist at Sandvik Coromant, added: “We saw an opportunity to increase efficiency immensely with the dual insert seat design. I have not seen another turning tool with this functionality and level of performance.”
What is more, each roughing insert comes with eight cutting edges, boosting tool life and driving down cost. CoroTurn PI utilises the patented PrimeTurning method, where small entering angles and all-directional turning deliver flexibility and control. The small angles, paired with the tool’s precision chip breaker, enable secure chip evacuation despite the limitations of internal features. To further optimise performance, the tool comes with customisable coolant delivery options, tailored for components with blind or through holes. The result is better chip control, smoother machining and greater reliability.