Kennametal 1528426 Indexable Insert Drill 76.2mm 2.5xd

Product Description

The KENNAMETAL 1528426 is a DFT-series indexable insert drill designed for high-productivity hole-making in steel and general-purpose machining applications. The body accepts two DFT-style inserts and delivers a maximum drill diameter of 80.01mm (3.15 inches) at a 2.5xD depth-to-diameter ratio, with a maximum drill depth of 190.5mm (7.5 inches). The 2-inch straight shank features a Weldon flat and flange configuration for secure toolholder engagement. Coolant-through capability is built in, with axial concentric coolant entry at the shank end and a side coolant port, supporting chip evacuation and insert life in continuous drilling operations.

This drill is suited for CNC machining centers and turning centers in job shop, production, and industrial manufacturing environments. It fits applications requiring consistent hole quality in the 2.5xD depth range, including general structural steel work and component machining. The DFT insert system uses 11.63mm x 4.93mm inserts (size code 1105) secured with an M5.5-0.9x9.5 T20 insert lock screw. The overall length of 14 inches accommodates standard spindle clearances on full-size vertical and horizontal machining centers.

Key Features

• DFT-series indexable insert system with two insert pockets for balanced cutting forces
• Maximum drill depth of 190.5mm (7.5 inches) at a 2.5xD depth-to-diameter ratio
• Coolant-through design with axial concentric entry and side coolant port for active chip management
• 2-inch Weldon flat and flange straight shank for rigid, repeatable toolholder seating
• Right-hand cutting direction; compatible with standard DFT1105 insert family
• Steel body construction; overall length of 14 inches with a 10-inch body length

Compatibility

Compatible with DFT drill style inserts, insert style code DFT, and insert size code 1105. Insert lock screw specification is M5.5-0.9x9.5 T20. Body side coolant port thread is 1/8-27 inch and shank end coolant port thread is 1/4-18 inch. Designed for use in toolholders accepting a 2-inch straight shank with Weldon flat and flange.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. The machine spindle and all axis motion must be stopped and the control locked out before inserting or removing the drill body from the toolholder. Inserts should be seated and the lock screw torqued using the specified T20 Torx driver; refer to the KENNAMETAL DFT assembly sheet for procedure. Confirm coolant supply connections at both the shank end and body side ports are clear and leak-free before initiating a cut.