Kennametal 1182962 Turning Insert SPG421 KC850 Solid Carbide

Product Description

The KENNAMETAL 1182962 is a solid carbide turning insert in the KENDEX series, designed for high-performance metal cutting in CNC and manual lathe applications. It carries the ANSI insert code SPG421 and ISO designation SPG120304. The insert features a multilayer CVD coating of TiC, TiCN, and TiN in the KC850 grade, which delivers a balance of moderate wear resistance and toughness suited for steel and stainless steel primary workpiece materials. With a 0.5-inch inscribed circle, a 1/8-inch thickness, and a 1/64-inch corner radius, this square-shaped insert fits standard SPG-style toolholders. It is installed by machinists and toolroom technicians on production turning, facing, and boring operations.

This insert is used in turning, facing, and boring operations on CNC lathes and manual turning centers in both production and job-shop environments. Primary workpiece materials include steel (P) and stainless steel (M), with additional suitability for cast iron (K) and special or super alloys (S) requiring moderate wear resistance and toughness. The flat-top chip breaker geometry and positive rake angle support consistent chip control during moderate to light material removal. The neutral hand orientation makes it compatible with a range of standard clamp-style toolholders. Licensed machinists and CNC operators handling precision turning work are the typical end users for this insert.

Key Features

• KC850 grade with multilayer CVD TiC, TiCN, and TiN coating for wear resistance and toughness across steel, stainless steel, cast iron, and super alloys
• Square insert shape (S) with 90-degree included angle and 11-degree relief angle for positive-rake cutting geometry
• Flat-top chip breaker with honed cutting edge style for consistent chip control on moderate cuts
• 4 usable cutting edges per insert, reducing per-edge tooling cost
• Neutral hand orientation compatible with standard SPG clamp-style toolholding systems
• Meets ANSI and ISO standards; ANSI size code 421, ISO size code 120304

Compatibility

Designed as an OEM-style replacement and standard production insert for SPG-style clamp toolholders accepting a 0.5-inch inscribed circle square insert in the KENDEX series. No specific machine model compatibility was provided in the available data.

Installation Notes

Installation is performed by a qualified machinist or CNC toolroom technician. The machine spindle must be fully stopped and the toolholder secured in a stable position before indexing or replacing the insert. Use the appropriate torque wrench and clamp hardware specified by the toolholder manufacturer when seating the insert. Do not use damaged or chipped inserts, as compromised cutting edges can cause unpredictable tool failure.