Hertel 4006077 Indexable Insert Drill 7/8 in 2xd

Product Description

The HERTEL 4006077 is an indexable insert drill designed for high-productivity hole-making in metal cutting applications. Built on a steel body with a straight cylindrical shank, it accepts two HPMT063306-GP inserts and delivers a 2xD depth-to-diameter ratio. The drill diameter measures 7/8 inches (0.8750 inches decimal), with a maximum drill diameter of 0.9010 inches. Overall body length is 4.9590 inches, and the 1-inch shank diameter is sized for standard toolholders in CNC machining centers and manual lathes. Coolant-through capability via a 1/4-inch shank-end coolant hole thread supports chip evacuation and extended insert life in deep-hole operations.

This drill is suited for production environments where repeatable hole geometry and fast cycle times are priorities. The right-hand cutting direction and straight shank make it compatible with typical CNC turning and milling setups in job shops, production machining facilities, and maintenance machine shops. It is well-suited for boring steel and similar materials where indexable tooling is preferred over solid carbide to reduce per-hole tooling cost. When inserts dull, they are replaced at the machine without regrinding the body.

Key Features

• 2xD depth-to-diameter ratio with 7/8-inch drill diameter for accurate through and blind holes
• Takes two HPMT063306-GP indexable inserts - no regrinding required
• Coolant-through design with 1/4-inch shank-end coolant hole thread for chip flushing and heat control
• Right-hand cutting direction with straight cylindrical shank for broad toolholder compatibility
• Steel body construction balances rigidity and weight at 0.95 pounds
• Flute length of 1.8680 inches (47.45 mm) supports chip clearance through the cut

Compatibility

Designed for use with HPMT063306-GP indexable inserts. The 1-inch straight cylindrical shank fits standard ER and hydraulic toolholders sized for 1-inch shanks on CNC machining centers and lathes.

Installation Notes

Installation and tooling changes should be performed by a qualified machinist with the machine powered down and the spindle fully stopped. Verify insert seating and screw torque per the insert manufacturer's specification before running. Confirm shank clamp engagement length meets the toolholder manufacturer's minimum before cutting. Connect coolant supply to the shank-end 1/4-inch port and verify flow before initiating a cut cycle.