Kennametal 1113525 Grooving Insert NR4062 K68 Carbide

Product Description

The KENNAMETAL 1113525 is a solid carbide grooving insert designed for external grooving and parting operations on CNC lathes and turning centers. Manufactured to the NR4062 style in the Top Notch series, it carries a K68 grade uncoated bright finish suited for machining cast iron, hardened steels, and abrasion-resistant materials where a coated insert would wear prematurely. The insert delivers a cutting width of 0.125 inches (3.18 mm) and a maximum depth of cut of 0.150 inches (3.81 mm), with a full-radius geometry and a corner radius of 0.063 inches (1.59 mm). Neutral rake geometry supports consistent chip control across a range of feed rates. This insert is used by machinists and toolroom technicians on production and job-shop turning equipment.

The KENNAMETAL 1113525 fits insert seat size 4 Top Notch toolholders and is intended for grooving applications in both production environments and job-shop settings. The K68 carbide grade is particularly well matched to interrupted cuts and abrasive workpiece materials where toughness and wear resistance are priorities. The uncoated bright finish maintains sharp edge integrity on fine-finish grooving passes. Right-hand cutting orientation suits standard spindle rotation setups on most CNC and manual lathes. The insert height is 0.453 inches, consistent with Top Notch system geometry requirements.

Key Features

• Solid carbide K68 grade construction - uncoated bright finish for abrasion-resistant and cast iron workpieces
• Cutting width of 0.125 inches (3.18 mm) with a full-radius profile and 0.063-inch (1.59 mm) corner radius
• Maximum depth of cut of 0.150 inches (3.81 mm); depth of cut range spans 3.00 mm to 4.00 mm
• Neutral rake geometry for consistent chip formation across varied feed conditions
• Right-hand insert orientation for standard CNC and manual lathe configurations
• Top Notch series, insert seat size 4 - direct replacement reference NR4062R/L

Compatibility

Designed for use with Top Notch series insert seat size 4 toolholders. Manufacturer reference number NR4062R/L confirms fitment for both right- and left-hand holder configurations within the Top Notch system.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before seating or removing inserts. Ensure the insert pocket and seating surfaces are clean and free of chips or debris before clamping to maintain proper insert orientation and prevent premature edge failure. Follow the toolholder manufacturer's clamping torque guidance for the Top Notch system - do not overtighten the clamp screw, as carbide inserts are brittle and susceptible to fracture under uneven clamping load.