Kennametal 3794937 Ksem Plus Pilot Insert Drill Head

Product Description

The KENNAMETAL 3794937 is a KSEM Plus series pilot insert drill head engineered for high-performance modular drilling applications. It accepts a fixed pilot insert and two nonpilot inserts secured by screw-style holding, delivering a maximum drill diameter of 57.15mm (2.25 inches) with a 21mm (0.8268 inch) pilot drill diameter. The head length measures 30mm (1.181 inches), with a head length to pilot tip of 34.5mm (1.3583 inches). Coolant-through capability is built in, supporting effective chip evacuation and thermal management at depth. The FDS56 head connection interfaces with compatible KSEM Plus modular shanks. Installation is performed by machining professionals in production and job-shop environments.

This drill head is designed for modular drill systems used in metal-cutting operations across aerospace, automotive, energy, and general machining industries. It is suited for through-coolant drilling setups where hole quality and tool life are critical. The KSEM Plus platform targets applications requiring precise pilot guidance and the flexibility of indexable insert replacement without removing the full drill assembly from the machine spindle.

Key Features

• Maximum drill diameter of 57.15mm (2.25 inches) for large-diameter hole making
• FDS56 head connection for secure, repeatable modular shank interface
• Fixed pilot insert design with screw-held nonpilot inserts for rigid cutting geometry
• Accepts 2 nonpilot inserts for balanced cutting action
• Coolant-through design supports chip flushing and heat control in deep-hole operations
• Includes insert screw and wrench for field insert changes

Compatibility

Designed for use with KENNAMETAL KSEM Plus modular drill shanks equipped with FDS56 head connections. Compatible with KSEM Plus series pilot inserts and nonpilot inserts sized for this head. Refer to KENNAMETAL tooling documentation for insert grade and geometry selections.

Installation Notes

This drill head is installed and serviced by qualified machinists or toolroom personnel. Disengage machine spindle power and release any stored energy before handling or changing inserts. Use only the supplied wrench and insert screw when seating inserts to avoid cross-threading or improper torque. Ensure coolant ports are clear and aligned with the shank coolant circuit before spindle engagement.