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The KENNAMETAL 1818356 is a solid carbide grooving insert designed for precision external grooving and parting operations on CNC lathes and turning centers. Carrying the KC5010 manufacturer grade with a PVD-applied TiAlN coating, this right-hand insert delivers controlled chip evacuation through its K-style chip breaker geometry. The cutting width measures 0.1252 inches (3.18 mm) and the maximum depth of cut reaches 0.2500 inches (6.35 mm). Machining professionals and CNC operators install this insert as part of the Top Notch grooving system, where consistent dimensional accuracy and tool life are critical to productivity.
This insert is suited for grooving and profiling applications in both ferrous and non-ferrous materials where carbide grades C3 and C4 apply. The positive rake angle of 10 degrees reduces cutting forces and promotes a clean chip break, making it a reliable choice for medium to finish turning passes. Its 55-degree included angle and 0.19 mm corner radius (0.0075 inches) support detailed groove profiles. Typical applications include production turning environments where grooving depth ranges from 5.00 mm to 10.00 mm.
Designed for use with Top Notch series grooving toolholders accepting insert seat size 4. The MSC/Manufacturer reference number for this insert is NGD4125R/LK. Verify toolholder seat size and insert style NGD before installation.
This insert is installed and replaced by a CNC machinist or tooling technician. Power down and lock out the machine spindle before changing inserts. Use the appropriate torque wrench and insert clamp hardware specified by the toolholder manufacturer — do not overtighten the clamping screw. Inspect the insert seat for chips or debris before seating the new insert to ensure proper contact and dimensional accuracy.
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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