T2139-R4 – carbide finish ball mill insert

Description

T2139-R4 – carbide finish ball mill insert engineered for high-accuracy CNC finishing operations on complex profiles, fillets, and 3D contours. Designed to deliver excellent surface finish and stable cutting performance, this insert is ideal for die & mould machining, automotive components, aerospace parts, and precision engineering applications where consistency and dimensional control are critical. The R4 ball radius ensures smooth transitions on curved surfaces and reliable contact during finishing passes.

Manufactured from premium-grade carbide substrate, the T2139-R4 insert offers strong edge integrity, wear resistance, and thermal stability, supporting dependable performance during high-speed milling. Its geometry is optimized to reduce cutting forces and vibration, enabling cleaner finishes and minimizing chatter—especially important in finishing operations that demand tight tolerances. The insert performs reliably on commonly machined materials such as P20 steel, stainless steel, EN8/EN19, alloy steels, and other engineering materials used in moulds and precision components.

Designed for use with indexable finish ball mill bodies, the T2139-R4 provides accurate seating and consistent edge engagement, which helps maintain repeatable results across production runs. The controlled chip flow and stable cutting action reduce burr formation and can significantly lower or eliminate secondary polishing, improving cycle time and overall productivity.

This product is commonly searched with keywords such as finish ball mill insert, R4 ball nose insert, carbide milling inserts, CNC finishing insert, precision carbide tools India, industrial cutting tools suppliers, and CNC cutting tools manufacturers—all aligned with buyer intent for high-quality finishing solutions. It is well suited for CNC vertical machining centers, high-speed spindles, and multi-axis machines where finish quality and reliability are paramount.

By combining consistent surface quality, predictable tool life, and stable cutting behavior, the T2139-R4 helps CNC shops achieve efficient finishing with reduced downtime and improved part quality. It is a dependable choice for finishing mould cavities, contoured faces, and detailed profiles where accuracy and finish matter most.