Kennametal 1161901 CCMT432LF KC730 Carbide Turning Insert

Product Description

The KENNAMETAL 1161901 is a CCMT432LF-style indexable turning insert in the KC730 grade, designed for steel, stainless steel, superalloys, and titanium. The insert is manufactured from solid carbide with a PVD-applied TiN coating and features an LF chip breaker geometry for positive-rake, light-finishing applications. It measures 12.9 mm (0.5077 inches) in length with a 0.5-inch inscribed circle and a 1/32-inch (0.0313-inch) corner radius. The honed cutting edge and screw-on holding method make this insert a practical choice for production turning environments where consistent surface finish and edge security matter. Licensed trades and machinists running CNC lathes or manual turning centers are the primary installers.

This insert is suited for turning, facing, and boring operations on a CNC or manual lathe. Its primary workpiece material classifications cover P (steel), M (stainless steel), and S (superalloys and titanium), with M and S also listed as secondary targets. The 80-degree diamond shape and neutral hand orientation allow versatile positioning in standard CCMT toolholders. Maximum depth of cut is rated at 1.25 mm (0.0492 inches), placing this insert in finishing and light semi-finishing cut ranges. Applications span both shop-floor production and maintenance machining where tight tolerances on difficult materials are required.

Key Features

• KC730 PVD TiN-coated carbide grade engineered for steel, stainless, superalloys, and titanium
• LF chip breaker geometry with positive 5-degree rake angle for light finishing cuts
• 80-degree diamond insert shape (Shape Code C) with honed cutting edge for improved edge integrity
• Screw-on holding method for secure, repeatable seating in compatible CCMT toolholders
• Two cutting edges per insert; neutral hand for flexible toolholder orientation
• Multi-use application: turning, facing, and boring from a single insert style

Compatibility

Designed for use in standard CCMT screw-on style toolholders accepting a 0.5-inch inscribed circle, 80-degree diamond insert with a 0.2165-inch (5.50 mm) hole diameter. Compliant with ANSI and ISO insert standards. Material grade classifications C2, C3, and C4 apply. Industry standard insert designation is CCMT432LF.

Installation Notes

Installation is performed by machinists or toolroom technicians on CNC or manual turning equipment. The machine spindle must be fully stopped and the toolholder secured in the turret before indexing or replacing the insert. Use the appropriate Torx or hex key to torque the clamping screw to the toolholder manufacturer's specification — do not over-tighten, as this can fracture the carbide. Inspect the insert seat and screw for debris or damage before seating a new insert edge.