Kennametal 4149147 Carbide Drill Bit 1.90mm 140 Degree

Product Description

The KENNAMETAL 4149147 is a solid carbide jobber length drill bit designed for precision drilling in demanding industrial applications. Built to DIN 6537K specification, it features a 140-degree drill point angle for aggressive penetration and a TiN (titanium nitride) coating that extends tool life in abrasive materials. The drill measures 1.90 mm (0.0748 inches) in diameter with an overall length of 58.00 mm (2.2835 inches). Right-hand cutting with a regular spiral flute pattern, this bit is suited for production drilling where consistent hole quality and dimensional accuracy are required. Qualified machinists and tooling technicians are the primary users of this type of precision drill.

This drill bit is rated for use in steel, stainless steel, cast iron, aluminum, and other non-ferrous materials, making it a versatile option across metalworking and precision machining environments. The coolant-through design supports high-speed drilling cycles by delivering coolant directly to the cutting edge, reducing heat buildup and chip evacuation issues. With a 5xD flute-to-diameter ratio and a 12.00 mm (0.4724 inch) flute length, this bit is well suited for shallow-to-moderate depth holes in automated CNC setups or manual drill press operations. The straight shank with a 4 mm (0.3750 inch) shank diameter fits standard collet and chuck toolholding systems.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive workpiece materials
• TiN coating reduces friction and extends cutting tool life in steel and stainless steel applications
• 140-degree split point geometry for aggressive entry and reduced thrust force
• Coolant-through design channels fluid directly to the cutting zone for thermal control and chip clearing
• Tapered web configuration improves core strength while maintaining cutting efficiency
• DIN 6537K compliant, ensuring dimensional conformance for tooling systems built to that standard

Compatibility

Designed for use in steel, stainless steel, cast iron, aluminum, and non-ferrous workpiece materials. The straight shank fits standard collet chucks and drill holders sized for 4 mm (0.3750 inch) shank diameters. Conforms to DIN 6537K specification.

Installation Notes

This drill bit should be installed and operated by qualified machinists or tooling personnel familiar with carbide cutting tools and CNC or manual drilling equipment. Secure the straight shank firmly in a compatible collet or chuck before operation to prevent runout and premature tool failure. When using the coolant-through feature, ensure the machine spindle and toolholder are configured to deliver through-coolant at the appropriate pressure for the application. Carbide tooling is brittle and susceptible to chipping from side loads or interrupted cuts - avoid lateral forces during drilling.