Iscar 3311612 Replaceable Tip Drill 0.311 in Hcp-iq IC908

Product Description

The ISCAR 3311612 is a carbide replaceable tip drill in the HCP-IQ series, designed for high-performance hole-making in ferrous and hard materials. The tip is manufactured from submicron solid carbide in IC908 grade and features a PVD-applied TiAlN finish that improves wear resistance and extends tool life in demanding cuts. The cutting diameter is 0.311 inches with a functional length of 0.111 inches and a 134-degree included angle at the drill point. A self-centering point geometry and web-thinned design reduce entry thrust and improve hole location accuracy without a pilot operation. Two slow-spiral flutes handle chip evacuation in deep-hole drilling applications.

This replaceable tip drill is intended for production drilling operations in steel and cast iron as primary workpiece materials, with rated capability in stainless steel, super-alloys, titanium, and hard materials as secondary applications. The HCP-IQ replaceable-tip system allows tip replacement at the machine without disturbing the shank body, reducing tooling changeover time in CNC turning centers, machining centers, and dedicated drilling cells. It is suited for job shops and production facilities running high-volume hole programs where consistent diameter control and tip economy are priorities.

Key Features

• IC908 submicron solid carbide tip grade for extended tool life in steel and cast iron
• PVD TiAlN coating improves heat resistance and reduces built-up edge
• Self-centering 134-degree point geometry eliminates need for a pilot hole
• Web-thinned design reduces axial thrust at entry
• Slow-spiral two-flute configuration optimized for deep-hole chip evacuation
• Replaceable tip interface (HCP-IQ) allows fast tip swaps without removing the drill body
• Conforms to ISO 13399 tooling data standards

Compatibility

Designed for use with the ISCAR HCP-IQ replaceable-tip drill body system, Insert Seat Size 7. The ISO number for this tip is HCP 079-IQ. Compatible workpiece materials include Steel and Cast Iron (ISO P and K codes) as primary, and Stainless Steel, Super-alloys, Titanium, and Hard Materials (ISO M, S, and H codes) as secondary.

Installation Notes

Installation of the replaceable tip is performed by a machinist or tooling technician using the twist-lock interface on the HCP-IQ shank body. Power down and lock out the machine spindle before seating or removing the tip. Ensure the insert seat is clean and free of chips before engaging the tip to prevent seating errors that affect runout. Follow the tool body manufacturer torque and engagement guidelines; do not use impact tools on the tip interface.