Kennametal 6140063 Square-shoulder Face Mill 3 in 8 Insert

Product Description

The KENNAMETAL 6140063 is an indexable square-shoulder face mill designed for precision milling operations in metal cutting applications. Built on the Mill 4-11 platform, this cutter accepts 8 LNGU110408SRGE inserts held by clamp and screw, delivering a 3-inch maximum cutting diameter with a 0-degree lead angle and negative rake geometry. Through-coolant capability is built in, supporting extended tool life and chip control at higher cutting speeds. The steel body is engineered for right-hand cutting direction and is suited for demanding face milling, shoulder milling, and step milling tasks in production environments. Licensed machinists and CNC programmers working in job shops or manufacturing cells will find this cutter dimensionally consistent and ready to mount.

This face mill is intended for use on vertical and horizontal machining centers where square-shoulder profiling, facing, or step cuts are required. The 1-inch arbor hole diameter fits standard arbor and adapter configurations commonly found in production milling setups. With a maximum depth of cut of approximately 0.433 inches (11.00 mm) and 8 insert positions, it is suited for medium to high material removal rate operations on steel, cast iron, and similar workpiece materials. The through-coolant design makes it a practical choice for operations requiring directed coolant flow to the cutting edge.

Key Features

• 3-inch maximum cutting diameter with 0-degree lead angle for true square-shoulder milling
• Accepts 8 LNGU110408SRGE inserts secured by clamp and screw holding method
• Through-coolant design with 0.098-inch coolant hole diameter for directed coolant delivery
• Right-hand cutting direction with negative rake insert geometry
• Steel toolholder body for rigidity and dimensional stability under load
• Mill 4-11 Series platform for insert and accessory compatibility within the product family

Compatibility

Compatible with LNGU110408SRGE series inserts. Designed for use on machining centers with a 1-inch arbor hole interface. Part of the Kennametal Mill 4-11 Series milling platform.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and the machine is locked out before mounting or removing the cutter. Torque all insert screws and arbor fasteners per the toolholder manufacturer's published guidelines using calibrated tooling. Verify runout and axial seating after mounting before initiating a cut.