Value Collection TCN18840L Turning Insert SPG432 TCN55

Product Description

The VALUE COLLECTION TCN18840L is a solid carbide turning insert designed for precision metal cutting operations on CNC lathes and turning centers. Manufactured to the SPG432 ANSI insert standard and ISO designation SPG120408, this insert features a TiN (titanium nitride) coating over a C5-grade carbide substrate. The square insert geometry provides a 90-degree included angle with an 11-degree relief angle and a positive side clearance, suited for general turning, facing, and profiling. With a 0.5-inch inscribed circle and a 0.0313-inch corner radius, it is sized for moderate depth-of-cut applications across a range of workpiece materials.

This insert is intended for use on steel and stainless steel workpiece materials, consistent with its P and M primary workpiece material classifications. It is clamp-held in compatible SPG-style turning toolholders and is well suited to production turning environments where consistent tool life and surface finish are required. The flat-top chip breaker design and positive clearance geometry make it appropriate for medium-speed finishing to semi-finishing operations. Machinists and tooling technicians in job shops, production facilities, and maintenance machining operations are the typical end users.

Key Features

• Solid carbide construction with TiN coating for improved wear resistance and tool life on steel and stainless workpieces
• SPG square insert geometry with 90-degree included angle and positive side clearance for reduced cutting forces
• 0.5-inch inscribed circle with 0.0313-inch corner radius for accurate profiling and finishing passes
• Flat-top chip breaker for predictable chip control in medium to semi-finishing cuts
• Clamp-held mounting method compatible with standard SPG432 toolholder pockets
• C5 material grade suitable for steel and stainless steel turning applications

Compatibility

Designed as an OEM-style replacement or production insert for standard SPG432 clamp-style turning toolholders accepting square inserts with a 0.5-inch inscribed circle and G tolerance class.

Installation Notes

This insert is installed and replaced by machinists or tooling technicians using appropriate insert clamp hardware and torx or hex key tools per the toolholder manufacturer specifications. Power down and lock out the machine spindle before changing inserts. Handle carbide inserts with care to avoid chipping the cutting edges. Verify insert seating and clamp torque before resuming cutting operations.