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A WNMG Insert Holder is a versatile turning tool holder specifically designed to securely clamp WNMG style indexable cutting inserts. The ISO designation “WNMG” indicates a hexagonal insert with an 80-degree nose angle (though sometimes referred to as having a 120-degree included angle of the hexagon), a clearance angle, neutral cutting action, and a central mounting hole. These inserts are commonly used for a broad range of turning operations, including roughing, semi-finishing, and finishing on various materials such as steel, stainless steel, cast iron, and non-ferrous metals.

The primary function of a WNMG Insert Holder is to provide a stable and accurately positioned platform for the WNMG insert. This ensures efficient material removal, good chip control, and the ability to achieve the desired surface finish. The holder features a precision-machined pocket that matches the specific shape and dimensions of the WNMG insert, allowing for secure and repeatable clamping, typically achieved with a screw or lever mechanism. This robust clamping prevents insert movement and vibration during machining, even under significant cutting forces.

WNMG inserts are popular due to their economy, offering six cutting edges per insert (three on each side), which can be indexed as they wear, providing excellent tool life and cost-effectiveness. The corresponding WNMG Insert Holders are designed for ease of use, enabling quick and straightforward insert changes, minimizing machine downtime. Available in various shank sizes and configurations to suit different machine tool types and application needs, WNMG Insert Tool Holders are a valuable and widely used tool in general turning applications.