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The KENNAMETAL 4175966 is a solid carbide grooving insert in the Top Notch series, designed for external grooving, parting, and profiling operations on CNC lathes and turning centers. Carrying the KCU10 manufacturer grade with a PVD-applied AlTiN coating, this right-hand insert delivers a 1.58 mm cutting width and a maximum depth of cut of 3.18 mm. The full-radius geometry with a 0.79 mm corner radius suits groove-bottom finishing and contour turning. Machinists and toolroom technicians install this insert into compatible Top Notch clamp-style toolholders for precision metal-removal work on steel, stainless, and difficult-to-machine alloys.
This insert is suited for production turning environments where consistent groove geometry and surface finish are critical. The 55-degree included angle and 8.74 mm cutting height make it applicable in tight-clearance grooving applications on both moderate and harder workpiece materials. The NRD3031 insert size fits standard Top Notch series clamp-style toolholders. It is sold individually per package, with a minimum order quantity of 5 units, making it appropriate for shop replenishment orders rather than single-unit spot purchases.
Designed for use with Top Notch series clamp-style toolholders accepting NRD3031 insert size. The MSC/Manufacturer cross-reference number is NRD3031R/L. Verify toolholder insert pocket specifications before installation.
Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before seating or replacing inserts. Use the appropriate torque wrench and clamp screw specified by the toolholder manufacturer — do not overtighten, as carbide inserts are brittle and can fracture under excess clamping force. Inspect the toolholder pocket for chips or debris before seating the insert to ensure proper contact and accurate cutting geometry.
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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