Kennametal 4033853 Grooving Insert KCU25 Left Hand

Product Description

The KENNAMETAL 4033853 is a solid carbide grooving insert in the Top Notch series, designed for external grooving and cutoff operations on CNC lathes and turning centers. It carries a KCU25 grade designation with a PVD-applied AlTiN coating, offering heat resistance and edge durability in demanding turning applications. The insert features a 1.19 mm cutting width and a maximum depth of cut of 1.91 mm, making it well suited for narrow groove profiles requiring close dimensional control. Installation uses a clamp-style holding method compatible with Top Notch toolholders. This insert is sold individually and requires a minimum order quantity of 5 units.

This insert is intended for use in precision turning and grooving applications on ferrous and non-ferrous workpiece materials, consistent with C2 and C6 material grade classifications. Its left-hand configuration suits specific toolholder orientations on gang-style or turret-style setups. The 64-degree included angle and 0.19 mm corner radius define the insert geometry for controlled groove wall finishes. Machinists and CNC operators working in production or job shop environments are the primary users of this insert type.

Key Features

• Solid carbide construction with PVD AlTiN coating for extended wear resistance
• KCU25 manufacturer grade suited to a range of grooving applications
• 1.19 mm cutting width with a maximum depth of cut of 1.91 mm
• Left-hand insert orientation for specific toolholder compatibility
• Clamp-style holding method for secure, repeatable seating in Top Notch toolholders
• 0.19 mm corner radius and 64-degree included angle for defined groove geometry

Compatibility

Designed for use with Top Notch series clamp-style grooving toolholders that accept the NG1047 insert size. The manufacturer part number cross-reference is NG1047L.

Installation Notes

Installation is performed by a qualified machinist or CNC setup technician. Power down and lock out the machine before changing inserts. Seat the insert fully in the toolholder pocket before tightening the clamp to the toolholder manufacturer's specified procedure. Inspect the insert seat and clamp for chips or debris prior to installation to ensure proper clamping force and insert stability.