To improve reliability in these demanding thread machining processes, Sandvik Coromant has developed the CoroThread 500: a new generation of solid carbide tools for thread milling in a circular process for internal thread turning of blind and through holes.
The CoroThread 500 is designed for machining complex threads. The cutting tool ensures safe and vibration-free machining of deep threads, long overhangs, difficult materials, and unstable clamping. As the successor to the CoroMill Plura R217, the new series combines high process reliability with the flexibility to machine a wide range of thread shapes, sizes, and materials with just one tool concept.
In modern manufacturing, reliability remains crucial. At the same time, companies across all industries are under pressure to increase productivity while reducing tool costs, scrap, and production downtime. The need for stable and predictable machining exists across industries, including aerospace, general mechanical engineering, automotive, medical technology, and electronics. Therefore, decision-makers are increasingly looking for versatile tool solutions that provide consistently high performance, simplify tool inventory, and lower overall costs per part.
To meet these challenges, CoroThread 500 combines vibration-free technology of various designs and hard material grades with advanced geometry and state-of-the-art PVD coatings. These features reduce vibrations, improve stability, and enable long, predictable tool life, even when machining difficult materials such as titanium and heat-resistant superalloys. An optimized number of cutting edges combined with the possibility of single-pass machining also helps manufacturing companies reduce cycle times and increase productivity.
"In thread machining of high-quality components, reliability is often more important than achieving the highest possible cutting data," explains Niladri Das, product manager at Sandvik Coromant. "A tool failure in a late stage of the manufacturing process can nullify hours of previously completed machining work and incur significant costs. CoroThread 500 is designed to help manufacturing companies minimize this risk while increasing productivity and precision in demanding applications."
In addition to process reliability, CoroThread 500 impresses with its exceptional versatility. By combining the inherently lower cutting forces of circular thread milling with an optimized machining strategy, CoroThread 500 enables stable and predictable thread machining across a wide range of applications. The solution supports numerous materials, thread shapes, and sizes. This allows companies to consolidate their tool inventory and increase their manufacturing flexibility.
Unlike thread drilling, CoroThread 500 offers reliable chip control, enables machining of threads down to the bottom of the hole, and allows for adjustments to machining strategies, thread tolerances, and radius correction. Compared to fully toothed thread cutters, the solution is particularly suitable for deep threads, hard-to-reach work areas, and applications with long overhangs. Even under demanding conditions, it delivers consistently high thread quality.
"Many companies assume that they need separate solutions to achieve both flexibility and process reliability," says Cory Carpenter, Global Product and Digital Application Specialist at Sandvik Coromant. "What makes CoroThread 500 unique is its ability to offer both. Manufacturing companies can use a single tool concept for a wide range of materials and thread shapes while ensuring the reliability required for demanding machining."
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