Hertel 4006140 Indexable Insert Drill 2-3/8 in 3xd

Product Description

The HERTEL 4006140 is a straight-shank indexable insert drill designed for high-productivity hole-making in metalworking and machining applications. With a drill diameter of 2.375 inches (60.33 mm) and a maximum drill depth of 7.125 inches, this tool follows a 3xD depth-to-diameter ratio. It accepts two indexable inserts compatible with the HPMT186812-GP insert style and incorporates through-coolant capability via a 1/4-inch threaded coolant port at the shank end. Right-hand cutting direction and a 1.5-inch straight cylindrical shank make it suitable for use in CNC machining centers and large-capacity drill presses operated by machinist and tooling professionals.

This drill is suited for production environments where large-diameter holes are required in steel, cast iron, and similar materials. The through-coolant system supports extended tool life and chip evacuation during deep-hole operations. A flute length of 7.441 inches provides chip clearance across the full drilling depth. This tool is typically deployed in job shop and manufacturing settings where indexable tooling is preferred over solid carbide drills for cost-effective insert replacement rather than full tool regrind.

Key Features

• 2.375-inch drill diameter with a 2.446-inch maximum drill diameter at insert cutting edge
• 3xD depth ratio with a maximum drill depth of 7.125 inches
• Takes two indexable inserts - compatible insert style: HPMT186812-GP
• Coolant-through design with 1/4-inch threaded shank-end coolant port for chip evacuation and heat management
• Straight cylindrical shank at 1.5 inches diameter and 3.0 inches shank length for secure machine-spindle retention
• Right-hand cutting direction; steel body construction

Compatibility

Designed for use with HPMT186812-GP indexable inserts. Compatible drill style is HID. Verify spindle bore clearance and coolant-supply connection at the machine tool before installation.

Installation Notes

Installation and setup should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine spindle before inserting or removing the tool from the holder. Torque insert screws to the tool manufacturer's published specification using the correct Torx or hex key - do not substitute fasteners. Confirm through-coolant pressure and flow compatibility with the machine tool's coolant system before cycling at full feed and speed.