Kennametal 1182893 Ceramic Milling Insert Square KY3500

Product Description

The KENNAMETAL 1182893 is a ceramic milling insert in the SPGN series, manufactured to ISO code SPGN120412T02020 and ANSI code SPG433T0820. This single-sided, square-shaped insert features an uncoated micrograin ceramic body in grade KY3500, a positive rake geometry, and a T-land cutting edge style. It carries four cutting edges, a corner radius of 0.0469 inches (1.20 mm), and a nominal thickness of 0.1874 inches. The insert is held in place by screw and is installed by machinists and tooling specialists performing milling operations on cast iron workpieces.

This insert is designed for milling applications where cast iron is the primary workpiece material, corresponding to material grade code K. The positive rake and flat-top chip breaker geometry make it well suited to finishing and semi-finishing passes. With a maximum depth of cut of 0.8660 inches and an inscribed circle of 0.5000 inches, this insert fits standard SPGN-style toolholders used in both vertical and horizontal milling setups. It is appropriate for production environments handling gray iron, ductile iron, and similar cast iron alloys.

Key Features

• Uncoated micrograin ceramic body in grade KY3500 for high-speed cast iron cutting
• Square insert shape with 90-degree included angle and four usable cutting edges
• Positive rake geometry with T-land cutting edge style for controlled chip formation
• Corner radius of 0.0469 inches (1.20 mm) for defined edge preparation
• Neutral hand orientation compatible with a wide range of SPGN toolholders
• Meets both ANSI and ISO insert standards for interchangeability

Compatibility

Designed as an OEM-style replacement for SPGN-series milling toolholders requiring a square ceramic insert with a 0.5000-inch inscribed circle and screw-clamping retention. Primary workpiece material compatibility is cast iron (material code K).

Installation Notes

Installation of milling inserts should be performed by qualified machinists with the spindle fully stopped and the machine locked out per applicable safety procedures. Use the correct torque wrench and manufacturer-specified clamping screw for the toolholder to avoid insert cracking or seat damage. Inspect the insert pocket and seating surface for chips or debris before seating the insert. Do not exceed the maximum depth of cut rating for the insert grade and toolholder combination.