Kennametal 4149188 Solid Carbide Jobber Drill 3.70 Mm

Product Description

The KENNAMETAL 4149188 is a solid carbide jobber-length drill bit designed for high-performance drilling in demanding production environments. It features a 140-degree point angle for aggressive entry and reduced thrust, and a multilayer TiAlN coating that extends tool life in abrasive and elevated-temperature cutting conditions. The drill measures 3.70 mm in diameter with an overall length of 66.00 mm (2.5984 inches) and a flute length of 28.00 mm (1.1024 inches). With a 5xD flute-to-diameter ratio and tapered web configuration, it delivers stable chip evacuation and consistent hole quality. Installed by machinists and tool-and-die professionals in CNC and manual drilling operations.

This drill is suited for through-hole and blind-hole applications in steel, stainless steel, cast iron, aluminum, and other non-ferrous materials. The 6 mm straight-cylindrical shank (0.5156 inches) seats in standard collet chucks and drill holders common to CNC machining centers, drill presses, and manual lathes. A maximum drilling depth of 23.00 mm (0.9055 inches) makes it appropriate for short-run production and maintenance drilling tasks where carbide rigidity and coating performance are required over high-speed steel alternatives. Coolant-through capability supports wet drilling in harder materials.

Key Features

• Solid carbide construction for rigidity and heat resistance in hard-material drilling
• Multilayer TiAlN coating extends tool life in steel and stainless steel applications
• 140-degree point angle reduces thrust and improves self-centering on entry
• Coolant-through design supports internal coolant delivery for deep or high-feed drilling
• Regular spiral, 2-flute geometry promotes efficient chip evacuation
• Conforms to DIN 6537K specification for dimensional consistency and interchangeability

Compatibility

Designed for use in standard collet chucks and drill holders accepting a 6 mm straight-cylindrical shank. Suitable for CNC machining centers and manual drilling setups running steel, stainless steel, cast iron, aluminum, and non-ferrous workpiece materials per DIN 6537K specification.

Installation Notes

Installation and tool changes should be performed by qualified machinists with the spindle fully stopped and the machine in a safe, locked-out state. Confirm shank seating and collet torque per the machine tool manufacturer's guidelines before initiating a cut. Do not exceed the rated maximum drilling depth of 23.00 mm per pass without retracting to clear chips, particularly in blind-hole operations. Internal coolant pressure should be set per the machine tool specifications when using the coolant-through feature.