Allied Machine 4C11P-18 Spade Drill Insert 18mm Carbide

Product Description

The ALLIED MACHINE AND ENGINEERING 4C11P-18 is a solid carbide spade drill insert designed for precision hole-making in steel and hard materials. Built to GEN2 T-A series specifications, this insert features a 132-degree point angle and an AM300 PVD coating that extends tool life in demanding cutting conditions. At 18 mm in diameter and a seat size of 1, it mounts into compatible GEN2 T-A spade drill holders used in CNC machining centers and drill presses. The C1 (K35) carbide grade delivers the hardness and wear resistance required for high-production metalworking environments. Licensed machinists and tooling specialists are the primary installers of this insert.

This insert is suited for drilling operations in steel and hard workpiece materials classified under material codes P and H. It fits into GEN2 T-A seat size 1 holders and is commonly used in production shops, job shops, and manufacturing facilities where consistent hole quality and tool longevity are critical. The AM300 coating reduces friction and heat buildup during cutting, making it a practical choice for moderate to aggressive feed rates in steel drilling applications.

Key Features

• Solid carbide construction with C1 (K35) material grade for high wear resistance
• AM300 PVD coating reduces heat and extends tool life in steel and hard material cutting
• 132-degree point angle optimized for controlled entry and reduced thrust
• 18 mm cutting diameter with seat size 1 for GEN2 T-A holder compatibility
• 0.1563 inch insert thickness provides consistent seating and rigidity
• Rated for steel (P) and hard material (H) workpiece categories

Compatibility

Designed for use with GEN2 T-A series spade drill holders with a seat size 1 designation, intended for 18 mm diameter drilling in steel and hard material workpieces.

Installation Notes

Insert replacement should be performed by a qualified machinist with the machine fully powered down and spindle locked. Use the appropriate torque wrench and insert screw specified by the holder manufacturer to seat the insert correctly — do not overtighten or substitute fasteners. Inspect the holder seat for wear or debris before installing a new insert. Follow the tooling manufacturer's recommended speeds and feeds for the workpiece material and coating grade.