Kennametal 1874250 Milling Insert MDHX1004ZDFRGD4W KC520M

Product Description

The KENNAMETAL 1874250 is a solid carbide milling insert carrying ANSI and ISO designation MDHX1004ZDFRGD4W in the KC520M manufacturer grade. It is a parallelogram-shaped, single-sided insert with a positive rake geometry and a wiper cutting edge style. The insert features a PVD-applied TiAlN coating designed for wear resistance in demanding milling operations. With four cutting edges and a 15-degree relief angle, it delivers consistent edge performance across the full tool life. Machining professionals and tooling technicians install this insert in Fix-Perfect cutter bodies for face and shoulder milling applications.

This insert is engineered primarily for milling cast iron workpieces, corresponding to material grade K and material codes C1 and C2. Its wiper edge geometry produces improved surface finish in high-feed milling passes. The GD chip breaker designation supports controlled chip formation in interrupted and continuous cast iron cuts. The insert mounts via screw-holding method in compatible Fix-Perfect series cutter bodies and is suitable for production environments where consistent insert geometry and repeatable positioning are required. Right-hand cutting orientation applies.

Key Features

• Solid carbide substrate with PVD TiAlN coating for extended wear life in cast iron milling
• Wiper cutting edge style improves surface finish at standard feed rates
• Four usable cutting edges per insert maximizes tooling economy
• GD chip breaker geometry supports controlled chip evacuation in cast iron
• Positive rake, 15-degree relief angle reduces cutting forces
• Screw-mount insert holding method ensures secure, repeatable seating

Compatibility

Designed for use in Fix-Perfect series cutter bodies accepting MDHX1004 insert size. Conforms to ANSI and ISO standards under designation MDHX1004ZDFRGD4W. Right-hand cutting orientation only.

Installation Notes

Installation is performed by qualified machining or tooling technicians. De-energize and lock out the spindle drive before changing inserts. Use the correct torx or hex key as specified by the cutter body manufacturer to seat the clamping screw — do not overtighten by feel alone; follow the cutter body manual for torque guidance. Inspect the insert pocket and seating surface for chips or debris before installing a new insert to ensure proper contact and runout.