Kennametal 1522121 Indexable Insert Drill 4xd Dft

Product Description

The KENNAMETAL 1522121 is an indexable insert drill designed for production drilling applications requiring consistent hole quality and depth control. Built to the DFT series standard, this drill accepts two DFT05T3 insert style inserts and delivers a maximum drill depth of 127 millimeters (5 inches) at a 4xD depth-to-diameter ratio. The body diameter is 31.75 millimeters with a maximum drill diameter of 33.66 millimeters (1.325 inches). The steel body features a 1.25-inch Weldon Flat and Flange straight shank, making it suitable for machining centers and milling machines where rigid tool holding is required. Installation and setup are typically performed by machinists or tooling engineers in metalworking and manufacturing environments.

This indexable drill is suited for general-purpose drilling operations in ferrous and non-ferrous materials across production and job-shop environments. The Weldon Flat and Flange shank style is compatible with standard CAT, BT, and HSK toolholders equipped for that interface. Coolant-through capability via axial concentric entry supports chip evacuation and thermal management in deep-hole drilling cycles. The DFT series is designed for applications where insert indexing speed and repeatability reduce cycle time compared to solid carbide drills.

Key Features

• 4xD drill depth-to-diameter ratio with 127 millimeter maximum depth
• Accepts two DFT05T3 indexable inserts for fast, in-machine insert changes
• Coolant-through design with axial concentric entry for effective chip clearance
• Weldon Flat and Flange shank (1.25 inches diameter, 3.25 inches shank length) for secure tool holding
• Right-hand cutting direction; general-purpose tool performance rating
• Insert lock screw M3-0.5x7.2 T9 drive for consistent clamping torque

Compatibility

Compatible with DFT series inserts, specifically insert style DFT05T3 with an insert size of 0.208 x 0.148 inches (5.29 x 3.75 millimeters). Shank end coolant hole thread size is 1/4-18. Designed for use with toolholders accepting a 1.25-inch Weldon Flat and Flange straight shank interface.

Installation Notes

Installation is performed by qualified machinists or tooling engineers. Power down and lock out the spindle before inserting or indexing drill inserts or tightening the insert lock screw. Verify coolant-through supply pressure and connection at the shank end prior to operation. Follow machine tool manufacturer torque specifications for toolholder clamping and refer to KENNAMETAL DFT series setup documentation for insert seating and runout verification procedures.