Value Collection TCN19330K Turning Insert SPMR421 TCN55

Product Description

The VALUE COLLECTION TCN19330K is a solid carbide turning insert designed for use on CNC lathes and turning centers in metal cutting operations. Manufactured to the ANSI insert code SPMR421 and ISO code SPMR120304, this insert features a square shape (S) with a 90-degree included angle and an 11-degree relief angle. The insert carries a TiN (titanium nitride) coating under manufacturer grade TCN55, which improves surface hardness and extends tool life during ferrous and non-ferrous metal turning. It has a 0.5-inch inscribed circle and a 1/64-inch (0.0156 inch) corner radius, making it well suited to general-purpose turning profiles.

This insert is intended for use in production and job-shop turning environments where consistent chip control and dimensional accuracy are required. It is compatible with toolholders designed for SPMR-style inserts with a clamp holding method. The positive side clearance geometry reduces cutting forces and heat buildup. Primary workpiece material codes M and P indicate suitability for steel and stainless steel applications. It ships individually but is subject to a minimum order quantity of 10 units.

Key Features

• Solid carbide construction with TiN coating for improved wear resistance on grade TCN55
• Square insert shape with 90-degree included angle and positive side clearance (Clearance Code P)
• 0.5-inch inscribed circle for robust edge support across standard toolholder systems
• 1/64-inch (0.0156 inch) corner radius for general-purpose turning profiles
• Chip breaker designation R for controlled chip formation during continuous cuts
• Tolerance Code M and Insert Style SPMR for repeatable indexing in clamp-style toolholders

Compatibility

Designed for use with toolholders accepting SPMR-style turning inserts using a clamp holding method. Rated for primary workpiece material codes M (stainless steel) and P (carbon and alloy steel) per ISO classification. Material grade C5 positions this insert for finishing to medium turning operations.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Power down and lock out the machine before indexing or replacing inserts. Use the appropriate torque wrench and clamp screws specified by the toolholder manufacturer when securing the insert. Inspect the seating pocket for chips or debris before installing a new insert to ensure proper contact and prevent premature edge failure.