Dumont Minute Man 99407 Keyway Milling Insert 8mm

Product Description

The DUMONT MINUTE MAN 99407 is a single-sided keyway milling insert designed for precision slot and keyway cutting operations. Manufactured from steel with 13% cobalt material grade, this insert features a Physical Vapor Deposition (PVD) TiN coating that extends cutting edge life and reduces friction during machining. The insert measures 0.5314 inches in length, 0.3149 inches in width, and 0.3543 inches in thickness. With a positive rake angle, a 45-degree included angle, and a single right-hand cutting edge secured by screw-holding method, it delivers controlled, accurate cuts in keyway applications.

This insert is intended for right-hand keyway milling operations in industrial and toolroom environments. The 8.00 mm cutting edge effective length and irregular insert shape make it suited for cutting standard metric keyway profiles in ferrous and non-ferrous workpieces. It belongs to the Series 99 product line and is appropriate for machine shops, maintenance facilities, and production environments where keyway broaching or milling is performed regularly. The insert is installed one piece per holder and ordered in a minimum quantity of two units.

Key Features

• PVD TiN coating provides wear resistance and extends cutting edge service life
• 13% cobalt steel construction for toughness in demanding keyway milling applications
• Positive rake geometry reduces cutting forces and improves chip flow
• 45-degree included angle and irregular shape optimized for keyway profiles
• Screw-held mounting method ensures secure, repeatable insert positioning
• Single right-hand cutting edge for directional keyway slot cutting

Compatibility

Designed as an OEM-style replacement insert for Series 99 keyway milling toolholders requiring an 8mm right-hand screw-held insert.

Installation Notes

Insert replacement should be performed by a qualified machinist or toolroom technician. Power down and lock out the machine spindle before removing or seating the insert. Use the appropriate torx or hex key driver specified by the toolholder manufacturer to secure the clamping screw - do not overtighten. Inspect the insert pocket for chips or debris before seating the new insert to ensure proper seating and avoid premature edge failure.