Kennametal 4149230 Solid Carbide Jobber Drill 1/4 Inch

Product Description

The KENNAMETAL 4149230 is a solid carbide jobber-length drill bit designed for high-performance drilling in demanding industrial and metalworking applications. It measures 1/4 inch (0.2500 inch) in diameter with a 140-degree split-point geometry that reduces walking and improves chip evacuation at entry. The TiAlN coating adds heat resistance and extends tool life in abrasive materials. At 3.5827 inches overall length with a 2.0866-inch flute, this drill delivers a balanced reach-to-rigidity ratio. Coolant-through capability keeps cutting edges cool and flushes chips during deep-hole operations. It is installed and run by machinists and CNC operators in production and job-shop environments.

This drill is suited for use in ferrous and non-ferrous materials including steel, stainless steel, cast iron, and aluminum. The right-hand, regular spiral flute design handles a wide range of workpiece materials without requiring specialty tooling changes. Maximum drilling depth reaches 1.0000 inch (25.4 mm), making it appropriate for through-holes and moderate-depth blind holes in production runs. The shank diameter is 0.3750 inch, fitting standard drill chucks and collet holders common on CNC machining centers and manual drill presses.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive materials
• TiAlN coating improves heat resistance and extends cutting tool life
• 140-degree point angle reduces drill walk and improves hole entry accuracy
• Coolant-through design flushes chips and controls heat at the cutting edge
• Right-hand, regular spiral flute compatible with standard CNC and manual setups
• DIN specification designation ensures dimensional conformance to recognized tooling standards

Compatibility

Designed as an OEM-grade solid carbide jobber drill for use in standard drill chucks and collet holders accepting a 0.3750-inch shank diameter. Suitable for steel, stainless steel, cast iron, and aluminum workpieces per manufacturer specification.

Installation Notes

Installation is performed by machinists or CNC operators. Verify that the machine spindle and chuck or collet are rated for the 0.3750-inch shank before securing the tool. Power down and lock out the machine before changing tooling. Coolant-through lines should be confirmed clear and at operating pressure before beginning the drilling cycle to prevent heat buildup and premature tool wear.