Kennametal 4176042 NG3072 KCU10 Grooving Insert Left Hand

Product Description

The KENNAMETAL 4176042 is a solid carbide grooving insert in the Top Notch series, designed for precision external grooving and turning operations on CNC lathes and turning centers. This left-hand insert carries a KCU10 grade designation with a PVD-applied AlTiN coating, delivering thermal and wear resistance suited to interrupted cuts and general-purpose turning of steel and cast iron. The cutting width is 1.83 mm (0.0720 inches) and the maximum depth of cut is 2.39 mm (0.0941 inches). The corner radius measures 0.19 mm (0.0075 inches). It is installed by machinists and CNC operators using a clamp-style holding method compatible with Top Notch toolholders.

This insert is intended for metric-measurement grooving applications where controlled width and depth are critical. Insert size designation is 3072, with a cutting height of 8.74 mm (0.3440 inches) and an overall width of 4.98 mm (0.196 inches). The included angle is 55 degrees. Typical applications include external groove profiles on ferrous and non-ferrous workpieces in production turning environments. The left-hand orientation suits specific toolholder configurations and feed directions on the machine. Material grades C3 and C4 indicate suitability for a range of work materials at moderate to high cutting speeds.

Key Features

• KCU10 solid carbide grade with PVD AlTiN coating for wear and heat resistance
• 1.83 mm cutting width for precise groove dimensions
• Maximum depth of cut range of 2.00 to 3.00 mm (0.0750 to 0.1000 inches)
• 0.19 mm corner radius for controlled edge geometry
• Left-hand insert orientation for compatible Top Notch clamp-style toolholders
• 55-degree included angle for defined groove profile

Compatibility

Designed for use with Top Notch series clamp-style toolholders accepting NG3072 insert geometry. The MSC/Manufacturer cross-reference number is NG3072R/L.

Installation Notes

Installation is performed by machinists using Top Notch clamp-style toolholders; confirm left-hand orientation matches the toolholder and feed direction before seating the insert. Power down and lock out the machine spindle before changing inserts. Inspect the insert seat and clamp for debris or damage prior to installation. Do not exceed the rated maximum depth of cut for this insert size.