Kyocera OTM86427 Square-shoulder Face Mill 3 in

Product Description

The KYOCERA OTM86427 is an indexable square-shoulder face mill designed for precision milling operations in metalworking and machining applications. This cutter accepts 6 APET 1604 style inserts secured by screw clamping, delivering a 0/90 degree lead angle that produces true 90-degree shoulder walls. The tool features a 3-inch maximum cutting diameter, a maximum depth of cut of 0.64 inches, and an overall height of 1.57 inches. It mounts via a 1-inch arbor hole and is engineered for right-hand cutting direction. Part of the FM--AL series, this face mill is suited for high-productivity shoulder milling on mills and machining centers operated by skilled machinists and CNC programmers.

The OTM86427 is suited for square-shoulder face milling on ferrous and non-ferrous workpieces in both production shop and job shop environments. The 0/90 lead angle geometry makes it effective for stepping and shouldering cuts where perpendicular walls are required. The FM--AL series designation indicates compatibility with a specific insert geometry family, allowing shops to standardize insert inventory across multiple cutter bodies. This tool is intended for use on horizontal and vertical milling machines and CNC machining centers where consistent surface finish and shoulder accuracy are required.

Key Features

• 3-inch maximum cutting diameter for productive face and shoulder milling passes
• Accepts 6 APET 1604 style inserts with screw-clamp insert holding for secure, repeatable positioning
• 0/90 degree lead angle produces true square shoulders in a single pass
• Right-hand cutting direction for standard spindle rotation compatibility
• 0.375-inch keyway width for positive drive torque transmission through arbor mounting
• No coolant-through design simplifies setup and toolholding requirements

Compatibility

Designed for use with APET 1604 series inserts. Part of the KYOCERA FM--AL series cutter family. Mounts to standard 1-inch arbor toolholding systems on horizontal and vertical milling machines and CNC machining centers.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully powered down and locked out before mounting or removing the cutter body. Torque all insert screws using the appropriate Torx or hex key per the insert manufacturer seating procedure, and verify each insert is fully seated before starting the machine. Confirm arbor fit and keyway alignment before tightening the retention hardware to prevent runout.