Kennametal 4148804 Screw Machine Drill Bit 1.50mm Carbide

Product Description

The KENNAMETAL 4148804 is a screw machine length (stub length) drill bit engineered for high-precision drilling in demanding production environments. Built from solid carbide and coated with TiN at the tip, this bit delivers extended tool life and consistent hole quality in ferrous and non-ferrous materials. It features a 1.50mm cutting diameter, a 140-degree drill point angle, and through-coolant capability, making it well suited for deep-hole drilling cycles where chip evacuation and heat control are critical. A straight shank and standard point geometry allow for straightforward setup in most CNC and conventional spindles. This bit is typically installed and operated by machinists, tool-and-die technicians, and production drilling specialists.

The 4148804 is designed for screw machine length drilling applications where a compact flute length and rigid body are needed to maintain positional accuracy. Through-coolant delivery keeps the cutting zone cool and flushes chips efficiently, which is especially important at small diameters where flute space is limited. The 1.50mm diameter suits precision component work common in aerospace, automotive, medical device, and general metalworking production runs. Right-hand cutting direction and a two-flute regular spiral configuration are standard for this class of drill in CNC machining centers and screw machines.

Key Features

• Solid carbide construction provides rigidity and wear resistance at small diameters
• TiN tip coating reduces built-up edge and extends tool life in common metals
• Through-coolant design (3XD series) improves chip evacuation and controls heat at the cutting edge
• 140-degree drill point angle suits a wide range of work materials including steel and cast iron
• Two-flute regular spiral geometry balances chip clearance with core strength at 1.50mm
• Straight shank for direct mounting in collet chucks, drill chucks, and machine tool holders

Compatibility

Designed as an OEM-style solid carbide screw machine drill for use in CNC machining centers, drill presses, and screw machines accepting a straight-shank drill bit with a 1.50mm cutting diameter. Part of the KENNAMETAL B051A series, 3XD coolant-through platform.

Installation Notes

Installation and operation should be performed by qualified machinists or tooling technicians familiar with small-diameter carbide tooling. Ensure the spindle and tool holder are clean and properly clamped before running; carbide is brittle and sensitive to runout, so verify TIR is within machine and toolholder specification before cutting. Activate through-coolant supply before engaging the cut to prevent thermal shock to the carbide substrate. Do not use this drill for hand-fed or uncontrolled-feed applications, as uneven feed rates at small diameters are a common cause of drill breakage.