Hertel 4006120 Indexable Insert Drill 1-1/8 in 3xd

Product Description

The HERTEL 4006120 is a straight-shank indexable insert drill designed for high-productivity hole-making in metal cutting applications. Built to a 3xD depth-to-diameter ratio, it drills to a maximum depth of 3-3/8 inches at a cutting diameter of 1-1/8 inches (1.1250 inches decimal). The tool body is constructed from steel and accepts two indexable inserts compatible with the HPMT074006-GP insert style. Right-hand cutting direction and coolant-through capability make it well suited for production environments where chip evacuation and tool life are critical. A 1/4-inch threaded coolant port is located at the shank end.

This drill is intended for use in machining centers, CNC lathes, and drill presses capable of accommodating a 1-1/4-inch straight-cylindrical shank. Typical applications include roughing and semi-finishing through-holes and blind holes in ferrous and non-ferrous materials in job shop, production, and OEM manufacturing settings. The 3xD ratio is appropriate for general-purpose drilling where hole depth does not exceed approximately three times the cutting diameter. Licensed machinists and CNC operators are the primary users.

Key Features

• 1-1/8 inch (1.1250 inch decimal) cutting diameter with 1.1590 inch maximum drill diameter
• 3xD depth-to-diameter ratio allows drilling to 3-3/8 inches maximum depth
• Accepts two HPMT074006-GP indexable inserts for quick edge changes without regrinding
• Coolant-through design with 1/4-inch threaded shank-end coolant port for improved chip flushing
• Right-hand cutting direction, straight-cylindrical shank for standard toolholder compatibility
• Steel tool body with 7.2020-inch body length and 3.0000-inch shank length

Compatibility

Compatible drill style is HID. Insert compatibility is confirmed for HPMT074006-GP inserts. Designed for use in toolholders and spindles accepting a 1-1/4-inch straight-cylindrical shank.

Installation Notes

Installation should be performed by a qualified machinist or CNC technician. Ensure the machine spindle is fully stopped and the control is in an e-stop or locked-out state before changing inserts or mounting the drill body. Verify shank seating depth and runout with a dial indicator before initiating a cut. Confirm coolant supply connections match the 1/4-inch threaded port at the shank end before activating coolant-through flow.