Kennametal 3742540 Square Shoulder End Mill 3/4 in

Product Description

The KENNAMETAL 3742540 is an indexable square-shoulder end mill built for precision milling operations in metal removal applications. It carries the ISO designation M1D075E1003C075L670 and accepts three EC10.. or EP10.. series inserts secured by screw clamping. The cutter delivers a 3/4-inch cutting diameter with a maximum depth of cut of 0.398 inches and a 0 degree lead angle, producing true 90-degree shoulders on workpieces. Through-coolant capability is standard, with a 0.236-inch coolant hole diameter to direct fluid directly to the cutting zone. The 3/4-inch cylindrical shank fits common milling machine and machining center spindles. Licensed machinists and CNC operators working in production or job-shop environments are the primary users.

This end mill is suited for square-shoulder milling, face milling, and slot milling on ferrous and non-ferrous materials in both conventional and CNC machining centers. The Cutter Style Mill 1-10 designation is compatible with standard tooling setups. With a maximum spindle speed of 45,900 RPM and an overall length of 6.7 inches, it accommodates a range of reach and clearance requirements in horizontal and vertical milling setups. The 1.25-inch head length provides adequate tool engagement without excessive overhang for most typical workholding arrangements.

Key Features

• 3/4-inch cutting diameter with 0 degree lead angle for true square-shoulder profiles
• Accepts 3 EC10.. and EP10.. series indexable inserts with screw clamping
• Through-coolant design with 0.236-inch coolant hole for direct cutting zone cooling
• Maximum spindle speed of 45,900 RPM for high-productivity applications
• 3/4-inch cylindrical shank for broad spindle compatibility
• ISO designation M1D075E1003C075L670 for precise cross-reference and tooling catalog matching

Compatibility

Designed for use with EC10.. and EP10.. series indexable inserts. Fits standard 3/4-inch cylindrical toolholders and milling machine spindle interfaces.

Installation Notes

Installation and toolpath setup should be performed by a qualified machinist or CNC programmer. Power down and lock out the machine spindle before changing inserts or mounting the tool body. Verify torque on all insert clamping screws per the insert manufacturer specification before running. Confirm through-coolant line connections and pressure before initiating any cutting cycle.