Dumont Minute Man 99212 Keyway Milling Insert Tin

Product Description

The DUMONT MINUTE MAN 99212 is a single-sided keyway milling insert designed for broaching and milling keyways in metal workpieces. Manufactured from steel with a 13% cobalt material grade, it features a Physical Vapor Deposition (PVD) TiN coating that extends cutting edge life and reduces friction during cuts. The insert measures 0.3543 inches thick and 0.3125 inches wide, with an effective cutting edge length of 0.3100 inches. It uses a positive rake geometry and a 45-degree included angle for efficient chip control in right-hand operation. Machinists and toolroom professionals install this insert in compatible keyway broaching and milling systems for precise slot cutting.

The 99212 fits Series 99 keyway milling toolholders and is suited for production and maintenance machining operations where accurate keyway sizing is required. The right-hand orientation and screw-holding method ensure secure seating during cutting. This insert is applicable in job shop, production floor, and maintenance toolroom environments handling steel and similar ferrous workpieces. The insert thickness range of 0.3500 to 0.5000 inches and length range of 0.5000 to 0.6000 inches define the operating envelope for this Series 99 application.

Key Features

• TiN coating applied via PVD process for improved wear resistance and tool life
• 13% cobalt steel construction for toughness in interrupted and continuous cuts
• Positive rake geometry with 45-degree included angle for efficient cutting action
• Screw-holding method ensures secure, repeatable insert positioning
• Right-hand, single-sided design with one cutting edge per insert
• No chip breaker geometry - suited for applications where chip breaker is not required

Compatibility

Designed for use in DUMONT MINUTE MAN Series 99 keyway milling toolholders. Thickness range 0.3500 to 0.5000 inches and length range 0.5000 to 0.6000 inches apply. Verify toolholder series and insert size specification before installation.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Ensure the milling machine or broaching unit is fully powered down and locked out before changing inserts. Seat the insert fully into the toolholder pocket and secure the clamping screw to the toolholder manufacturer's specified procedure before resuming cuts. Inspect the insert seating and cutting edge condition before each use.