Kennametal 4150772 Carbide Jobber Drill 1/2 Inch 140 Deg

Product Description

The KENNAMETAL 4150772 is a solid carbide jobber-length drill bit designed for high-performance hole-making in demanding materials. It features a 140-degree split point, a multilayer TiAlN coating, and a right-hand spiral flute configuration. With a 1/2 inch diameter and an overall length of 4.8819 inches, this drill is built for production environments where tool life and hole quality matter. A whistle notch shank provides positive drive and reduces the risk of slippage in the chuck. Licensed machinists, tool-and-die makers, and metalworking shops are the primary users of this type of tooling.

This jobber drill is engineered for cutting steel, stainless steel, cast iron, aluminum, and other non-ferrous metals. It is well suited for general-purpose drilling on CNC machining centers, drill presses, and manual mills where a consistent 1/2 inch hole diameter is required. The 140-degree point geometry reduces thrust force at entry, making it effective on harder workpiece materials and thin-wall sections. The flute length of 3.0315 inches supports chip evacuation across a maximum drilling depth of 1.25 inches.

Key Features

• Solid carbide construction for rigidity and extended tool life in hard materials
• Multilayer TiAlN coating improves heat resistance and wear performance
• 140-degree point angle reduces entry thrust and improves self-centering
• Right-hand regular spiral flute promotes efficient chip evacuation
• Whistle notch shank provides secure, positive drive in standard chucks
• No coolant-through requirement simplifies toolholder setup

Compatibility

Designed as a high-performance OEM-style jobber drill for use in standard 1/2 inch drill chucks and collet systems compatible with a 0.4219 inch shank diameter and whistle notch drive configurations.

Installation Notes

Installation and use of carbide drill bits should be performed by qualified machinists or tooling technicians. Ensure the machine spindle is fully stopped and the tool is secure in the chuck or collet before beginning any operation. Carbide tooling is brittle compared to high-speed steel and should not be subjected to side loads or impact. Follow the machine manufacturer guidelines and applicable shop safety procedures for speeds and feeds appropriate to the workpiece material.