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The KENNAMETAL 3791292 is a solid carbide grooving insert designed for precision groove turning and parting operations on CNC lathes and turning centers. Designated style A4G0405GUP in grade KCP10, this insert features a CVD-applied multilayer coating of TiCN, Al2O3, and TiN that delivers wear resistance and thermal stability across a range of workpiece materials. With a 4.05 mm cutting width and a maximum depth of cut of 3.4 mm, it handles medium-depth grooving with controlled chip formation through its GUP chip breaker geometry. The positive rake configuration reduces cutting forces. This insert is installed by machinists and CNC toolroom technicians working in production or job-shop environments.
The A4G0405GUP KCP10 insert suits grooving, recessing, and light parting applications on materials corresponding to C3 and C7 material grades, which typically include cast irons, steels, and non-ferrous alloys. It is well suited to external groove turning on bar-fed turning centers and manual CNC lathes where consistent groove width and corner geometry are required. The GUP chip breaker promotes reliable chip evacuation in interrupted or continuous groove passes at moderate feed rates and surface speeds.
Designed for use with A4 series grooving toolholders accepting insert seat size 4. Specific toolholder compatibility should be confirmed against the A4 series toolholder documentation prior to installation.
Installation should be performed by a qualified machinist with the machine in a locked-out, zero-energy state before any insert seating or torque work is attempted. Use the correct insert key or torque wrench as specified by the toolholder manufacturer for the clamping screw. Inspect the insert pocket and seating surface for chips or debris before seating the insert. Do not exceed the maximum depth of cut rating for the insert grade and chip breaker combination.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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