Kennametal 6140051 Square-shoulder End Mill 1 in 3 Flute

Product Description

The KENNAMETAL 6140051 is an indexable square-shoulder end mill designed for precision milling operations in steel and other metallic workpieces. Built on the Mill 4-11 series platform, it accepts three LNGU110408SRGE inserts secured by screw clamping. The tool features a 1-inch cutting diameter, an 11 mm maximum depth of cut, and a through-coolant channel to manage heat and chip evacuation at the cutting zone. Overall length is 4.03 inches. The Weldon Flat shank provides positive drive engagement and reduces pullout risk in high-torque applications. This tool is intended for use by machinists and toolroom professionals in CNC milling operations.

This end mill is suited for square-shoulder milling, slotting, and face milling operations on machining centers and CNC mills. The 0-degree lead angle delivers true 90-degree walls on workpiece shoulders. With a maximum spindle speed of 33,900 RPM and a 4 mm coolant hole diameter, it is configured for high-speed wet or through-spindle coolant setups typical in production and job-shop environments. The 1-inch Weldon Flat shank fits standard ER and side-lock toolholders designed for that shank diameter.

Key Features

• Three LNGU110408SRGE inserts secured by screw clamping for repeatable edge indexing
• Through-coolant capability with 4 mm coolant hole diameter for heat and chip management
• 0-degree lead angle produces true 90-degree square shoulders
• Maximum spindle speed of 33,900 RPM supports high-speed machining applications
• 1-inch Weldon Flat shank provides positive anti-pullout drive engagement
• Mill 4-11 series platform with ISO designation M4D100L1103W100L175

Compatibility

Designed for use with LNGU110408SRGE indexable inserts. Compatible with toolholders accepting a 1-inch Weldon Flat shank. Verify toolholder bore and drive flat alignment before mounting.

Installation Notes

Installation and tool changes should be performed by qualified machinists with the machine spindle fully stopped and locked out per facility LOTO procedures. Torque the insert clamping screws using the appropriate Torx key to the insert manufacturer specification. Ensure the through-coolant port is aligned with the spindle coolant supply before engaging coolant flow. Inspect insert seating and shank clamping before initiating any cutting pass.