Kennametal 3794938 Ksem Plus Pilot Insert Drill Head

Product Description

The KENNAMETAL 3794938 is a KSEM Plus series pilot insert drill head designed for high-productivity indexable drilling operations. It accepts an FDS56 head connection and supports a maximum drill diameter of 60.33mm (2.3752 inches) with a fixed pilot insert configuration. The 24mm (0.9449 inch) pilot drill diameter centers the cut, while two non-pilot inserts handle the outer diameter. The head measures 30mm (1.1811 inches) in length and 35mm (1.3780 inches) from head to pilot tip. Inserts are secured by screw-type clamping. This head is installed by machinists and tooling specialists in CNC machining centers and drill press setups requiring precise, large-diameter hole production.

The 3794938 drill head is suited for metalcutting applications in production machining environments — including aerospace, heavy equipment, and general manufacturing — where accurate large-diameter drilling is required. It is compatible with modular KSEM Plus drill body systems using the FDS56 interface. The through-coolant capability makes it appropriate for deep-hole and interrupted-cut conditions where chip evacuation and heat management are critical. Each unit ships with an insert screw and a wrench for proper insert seating and torque.

Key Features

• FDS56 head connection for use with compatible KSEM Plus modular drill bodies
• Maximum drill diameter of 60.33mm (2.3752 inches) for large-bore applications
• 24mm (0.9449 inch) fixed pilot insert for accurate hole positioning and centering
• Accepts 2 non-pilot inserts for full-diameter cutting coverage
• Coolant-through design supports chip evacuation and thermal management in deep-hole drilling
• Screw-type insert clamping for positive insert retention under heavy cutting loads
• Includes insert screw and wrench for immediate setup

Compatibility

Designed for use with KENNAMETAL KSEM Plus modular drill bodies equipped with an FDS56 head connection interface.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Before mounting or changing the drill head, ensure the machine spindle is fully stopped and the machine is locked out per facility safety procedures. Use only the included wrench and insert screw to seat inserts to the manufacturer-specified method — do not substitute fasteners. Verify that the mating drill body FDS56 interface is clean and free of chips or damage before threading on the head.