Kennametal 3870455 Corner Radius End Mill 1/4 in 3 Flute Carbide

Product Description

The KENNAMETAL 3870455 is a solid carbide corner radius end mill designed for material removal in non-ferrous metal applications. With a 1/4-inch cutting diameter and a 1/2-inch length of cut, this single-end mill operates in right-hand cutting and right-hand flute direction. The three-flute spiral geometry and high helix angle promote efficient chip evacuation and surface finish quality. At 2.5 inches overall length with a straight cylindrical 1/4-inch shank, it fits standard tool holders and hydraulic sleeves used in CNC machining centers. Machinist and tooling technicians working with aluminum, brass, copper, and similar non-ferrous stock are the primary users of this tool.

This end mill is suited for short-reach roughing operations on non-ferrous metals in both production and job-shop CNC environments. The AADE series designation places it in a coarse-pitch, submicron carbide grade family optimized for high material removal rates without coating. It is centercut capable, allowing plunge entry in addition to peripheral and slot milling. Compatible tooling systems listed in the input include HC 1/2 through HC 1-1/4 hydraulic sleeves inch with inch bores and HC 20M through HC 32M hydraulic sleeves metric with inch bores.

Key Features

• Solid carbide submicron material grade for rigidity and wear resistance in non-ferrous applications
• Corner radius end type reduces stress concentration at cutting edges compared to sharp-corner geometry
• Three-flute spiral configuration with coarse pitch supports aggressive roughing chip loads
• High helix angle promotes smooth cutting action and efficient chip flow in aluminum and similar materials
• Centercut capable — supports plunge milling without a pilot hole
• Bright/uncoated finish — no coating buildup concerns when machining non-ferrous materials that can react with TiN or TiAlN coatings

Compatibility

Compatible with HC 1/2 through HC 1-1/4 hydraulic sleeves inch with inch bores and HC 20M through HC 32M hydraulic sleeves metric with inch bores. Designed for use on non-ferrous metal workpieces; primary workpiece material code N per KENNAMETAL classification.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and the tool changer is in a safe state before inserting or removing the end mill. Confirm shank seating depth and runout with a dial indicator before production cuts. Do not exceed the manufacturer-rated depth of cut for the tool diameter and material combination.