Hertel 4006161 Indexable Insert Drill 1-1/4 in 3xd

Product Description

The HERTEL 4006161 is a straight-shank indexable insert drill designed for high-productivity hole-making in metal-cutting applications. The drill accepts two HPMT094508-GP inserts and cuts in the right-hand direction. It measures 1.25 inches in diameter with a maximum drill depth of 3.75 inches, yielding a 3xD depth-to-diameter ratio. The flute length runs 3.907 inches and the overall body length is 7.734 inches. Built on a steel body with a 1.25-inch straight-cylindrical shank, this drill is suited for use in CNC machining centers and rigid manual setups where repeatable, accurate bore diameters are required.

This drill is intended for use in production and job-shop environments where indexable tooling is preferred over solid-carbide or brazed designs. The 3xD ratio makes it well matched for general through-hole and blind-hole drilling in steel, cast iron, and similar workpiece materials. Machinists and tooling technicians working in precision manufacturing, contract machining, or maintenance machining will find this drill appropriate for moderate-depth holes where insert replacement in the field keeps tooling cost manageable.

Key Features

• 1.25-inch (31.75 mm) drill diameter with a maximum drillable diameter of 1.288 inches
• 3xD depth-to-diameter ratio allows drilling to 3.75 inches maximum depth
• Accepts two HPMT094508-GP indexable inserts for cost-effective edge replacement
• Straight-cylindrical shank at 1.25 inches diameter for standard toolholder compatibility
• Coolant-through capability with 1/4-inch threaded coolant hole at the shank end
• Right-hand cutting direction; steel drill body construction

Compatibility

Designed for use with HPMT094508-GP indexable inserts and compatible with the HID drill style. Verify toolholder bore and retention method before installation.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Secure the shank in a toolholder rated for the shank diameter before mounting in the spindle, and confirm runout is within the machine and toolholder specification before cutting. Enable coolant flow through the shank-end port prior to engaging the workpiece to protect insert life. Follow the insert manufacturer indexing procedure when rotating or replacing inserts, and never exceed the published maximum drill depth for this tool.