Hertel 4006144 Indexable Insert Drill 2-1/8 in 3xd

Product Description

The HERTEL 4006144 is a straight-shank indexable insert drill engineered for high-production hole-making in metal cutting applications. The body accepts two indexable inserts compatible with the HPMT156812-GP insert style, allowing fast insert changes without removing the drill from the machine. With a nominal drill diameter of 2.125 inches and a maximum drill depth of 6.375 inches, this tool delivers a 3xD depth-to-diameter ratio suited to rigid setups in CNC machining centers and manual boring mills. Coolant-through capability is supported via a 1/4-inch threaded coolant port at the shank end, helping flush chips and extend insert life during deep-hole cycles. Tool body material is steel.

This drill is intended for use in metalworking environments where large-diameter holes are required in a single operation without pre-drilling. Typical applications include job shops, OEM manufacturing floors, and maintenance departments working with structural steel, cast iron, and similar machinable metals. The 1.5-inch straight cylindrical shank fits standard ER and hydraulic chuck toolholders in that bore range, making setup straightforward on most CNC turning or machining center spindles. Right-hand cutting direction is standard. Installation and operation should be performed by qualified machinists following shop safety and machine guarding procedures.

Key Features

• 2.125-inch nominal drill diameter with maximum drill diameter of 2.189 inches
• 6.375-inch maximum drill depth at a 3xD depth-to-diameter ratio
• Accepts 2 indexable inserts compatible with HPMT156812-GP insert style
• Coolant-through design with 1/4-inch threaded shank-end coolant port
• Right-hand cutting direction with straight cylindrical shank for broad toolholder compatibility
• Steel tool body construction for rigidity under high feed rates

Compatibility

Designed for use with HID drill style toolholders. Takes HPMT156812-GP indexable inserts. Fits toolholders accepting a 1.5-inch straight cylindrical shank.

Installation Notes

Installation should be performed by a qualified machinist. Ensure the machine spindle is fully stopped and locked out before mounting or removing the drill body. Confirm the toolholder bore matches the 1.5-inch shank diameter and that set screws or clamping mechanisms achieve adequate holding force for the feed rates intended. Verify coolant port connection at the shank end before initiating a coolant-through cycle to prevent uncooled dry running.