Kennametal 4149323 Solid Carbide Jobber Drill Bit 1/2 in

Product Description

The KENNAMETAL 4149323 is a solid carbide jobber-length drill bit designed for high-performance drilling in demanding production environments. Built to DIN 6537K specification, it features a multilayer TiAlN coating that extends tool life and supports elevated cutting speeds. The 140-degree point angle promotes self-centering and reduces thrust load compared to conventional 118-degree geometries. At 4.882 inches overall length with a 3.032-inch flute, this bit handles a maximum drilling depth of 2.362 inches. The straight-cylindrical shank at 0.551 inches diameter fits standard drill chucks. Machinists, tool-and-die professionals, and CNC operators working in steel, stainless, cast iron, and similar alloys are the primary users.

This drill bit suits general-purpose jobber-length applications in both manual and CNC machining operations. The 5xD flute-to-diameter ratio and regular spiral type make it appropriate for through-hole and blind-hole work in ferrous metals and hardened materials. The tapered web configuration supports chip evacuation under moderate to high feed rates. Coolant-through capability allows internal coolant delivery, which is particularly useful in deep-hole applications or when machining heat-sensitive alloys on equipped machining centers.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive materials
• Multilayer TiAlN coating improves heat resistance and extends cutting life at higher surface speeds
• 140-degree standard point angle reduces walking and entry burr on flat or contoured surfaces
• Coolant-through design enables internal coolant delivery for deep-hole and high-speed applications
• DIN 6537K specification ensures dimensional consistency and interchangeability with DIN-standard toolholders
• Right-hand spiral flute with tapered web promotes chip flow and core strength simultaneously

Compatibility

Designed as a DIN 6537K jobber-length drill bit with a 0.551-inch straight-cylindrical shank, compatible with standard drill chucks and collet systems accepting shank diameters within the 0.5000 to 0.6500 inch range.

Installation Notes

Installation and operation of solid carbide drill bits should be performed by qualified machinists familiar with cutting tool safety. Ensure the machine spindle and toolholder are free of runout before seating the shank, as carbide is brittle and sensitive to lateral shock loads. Disconnect and lock out machine power before changing tooling. Do not use this bit in hand-held drills; carbide jobber bits require rigid, vibration-minimized setups such as machining centers or drill presses with properly secured workpieces.