Kennametal 3794920 Ksem Plus Pilot Insert Drill Head

Product Description

The KENNAMETAL 3794920 is a KSEM Plus series pilot insert drill head designed for indexable modular drilling applications. It accepts a pilot insert at the center and two non-pilot inserts at the outer cutting positions, enabling high-feed drilling with replaceable cutting edges rather than a solid tool body. The head connects to compatible shanks via an FDS36 head connection interface. Maximum drill diameter reaches 1.5 inches (38.10 mm), with a pilot drill diameter of 0.5906 inches (15.00 mm). Head length is 0.7874 inches (20.00 mm), and the head length to pilot tip measures 0.9055 inches (23.00 mm). Coolant-through capability supports chip evacuation and tool life in demanding materials. Licensed machinists and tooling specialists working in production or job-shop environments install and index this head.

The 3794920 drill head suits metalcutting operations where modular tooling systems are used to reduce downtime and insert cost. Typical applications include deep-hole and through-hole drilling in steel, cast iron, and similar workpiece materials on CNC machining centers or dedicated drilling machines. The KSEM Plus platform is built for high-productivity environments where quick head changes between operations are required. Insert replacement is accomplished at the machine without removing the shank body from the spindle, reducing setup time on production runs.

Key Features

• FDS36 head connection interfaces with compatible KSEM Plus shank bodies for rigid, repeatable tool assembly
• Maximum drill diameter of 1.5 inches (38.10 mm) covers a wide range of hole sizes
• Pilot insert design combined with two non-pilot inserts distributes cutting load across the face
• Coolant-through channels direct fluid to the cutting zone for chip evacuation and thermal management
• Screw-held inserts provide secure clamping and straightforward indexing at the machine
• Includes insert screw and wrench for field assembly

Compatibility

Designed for use with KSEM Plus series modular drill shanks equipped with an FDS36 head connection. Specific shank body compatibility should be confirmed against KENNAMETAL KSEM Plus system documentation prior to ordering.

Installation Notes

Installation and insert indexing should be performed by qualified machinists or tooling technicians following the machine tool builder's spindle lockout and energy-isolation procedures before any head change. Use only the supplied wrench and insert screw when seating inserts to avoid seat damage. Verify coolant-through passages are clear before returning the assembly to service. Follow applicable workplace safety standards for rotating cutting tools during setup and operation.