Kennametal 2658231 Solid Carbide Jobber Drill 15/32 in

Product Description

The KENNAMETAL 2658231 is a solid carbide jobber-length drill bit designed for high-performance hole-making in demanding materials. Ground to a 140-degree point angle with a web-thinned geometry and TiAlN coating, this drill handles steel, stainless steel, cast iron, aluminum, and other non-ferrous materials with consistent performance. At 4.6457 inches overall length with a 2.7953-inch flute length, it fits standard jobber-length tool holders and drill chucks. The straight cylindrical shank measures 0.4724 inches in diameter. Right-hand spiral flute geometry promotes efficient chip evacuation. Intended for use by machinists and production tooling specialists working on CNC machining centers and drill presses where precision bore diameter and tool life matter.

This drill bit is suited for production and job-shop environments where hard and abrasive workpiece materials are common. Typical applications include drilling through mild and hardened steels, stainless alloys, cast iron, and non-ferrous stock. The coolant-through construction allows internal coolant delivery directly to the cutting edge, which is critical when drilling deep holes or running at elevated feed rates in heat-generating materials. Maximum drilling depth is rated at 2.2050 inches, making it appropriate for through-hole and moderate-depth blind-hole operations in plate, block, and structural workpieces.

Key Features

• Solid carbide construction provides rigidity and wear resistance superior to HSS in abrasive and hard materials
• TiAlN coating extends tool life in high-temperature cutting environments including dry and semi-dry machining
• 140-degree point angle reduces thrust load and improves self-centering on entry
• Web-thinned point geometry lowers cutting forces and aids chip formation at the chisel edge
• Coolant-through design delivers cutting fluid directly to the tip for deep-hole thermal management
• Conforms to DIN 6537L specification for consistent dimensional tolerance and interchangeability
• Diameter tolerance held to +0.007 to +0.025 mm for close-fit bore requirements

Compatibility

Designed as an OEM-specification replacement or direct-use jobber drill conforming to DIN 6537L for use in standard straight-shank drill chucks and ER collet systems accommodating a 0.4724-inch shank diameter. Compatible workpiece materials listed in product specifications include steel, stainless steel, cast iron, aluminum, and non-ferrous alloys.

Installation Notes

Installation and use should be performed by a qualified machinist or tooling technician. Ensure the drill shank is fully seated and securely clamped in the tool holder before spindle engagement. Verify that the machine spindle and coolant system are confirmed off and de-energized before tool changes. Do not exceed the rated maximum drilling depth of 2.2050 inches per pass without retracting to clear chips.