Kennametal 1163039 Turning Insert K68 Carbide 3/8 Ic

Product Description

The KENNAMETAL 1163039 is a solid carbide, uncoated turning insert in the TP61 geometry, designed for precision metal cutting on CNC lathes and turning centers. Manufactured from K68 grade uncoated carbide, this insert offers high wear resistance with moderate toughness, making it well-suited for finishing and semi-finishing operations on stainless steel, cast iron, aluminum, and other non-ferrous materials. The triangular insert shape provides three usable cutting edges, and the screw-on holding method ensures secure, repeatable positioning in compatible toolholders. Corner radius measures 0.0156 inches (1/64 inch), and the inscribed circle diameter is 0.375 inches (3/8 inch).

This insert is applied in turning operations across a range of workpiece materials coded P, M, K, N, and S per ISO classification. It is primarily suited for light to moderate depth-of-cut passes, with a maximum depth of cut of 0.0492 inches (1.25 mm). Typical install scenarios include CNC lathe toolholder setups in job shop, production machining, and maintenance machining environments. Machinists and CNC operators handling stainless steel and cast iron components will find this insert well-matched for high wear-resistance applications requiring a positive rake and positive side clearance geometry.

Key Features

• K68 uncoated solid carbide grade delivers high wear resistance for stainless steel (M), cast iron (K), and aluminum and non-ferrous (N) workpiece materials
• Triangular insert shape (T) provides three usable cutting edges for extended tool life per insert
• Positive rake and positive side clearance geometry reduces cutting forces for cleaner finishes
• Screw-on insert holding method ensures rigid, repeatable seating in compatible TP-style toolholders
• No chip breaker design supports smooth, consistent chip flow in finishing and light semi-finishing cuts
• Neutral hand orientation supports use in both left- and right-hand turning applications

Compatibility

Designed for use with screw-on TP-style turning toolholders accepting a 3/8 inch inscribed circle triangular insert. Industry standard reference number CCGT431HP. ANSI insert code TP61; ISO insert code TP160304.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Always power down and lock out the machine before changing inserts. Use the appropriate torx or hex key to secure the screw-on clamp to the manufacturer-specified holding torque for the toolholder in use. Inspect the insert pocket and seating surface for chips or debris before seating the insert to ensure accurate positioning and prevent premature edge failure.