Kennametal 4149307 Carbide Jobber Drill 11.40mm 140deg

Product Description

The KENNAMETAL 4149307 is a solid carbide jobber-length drill designed for high-performance drilling in demanding metalworking applications. It features an 11.40 mm diameter, a 140-degree point angle, and a multilayer TiAlN coating that resists heat and wear during high-speed cutting cycles. The overall length is 118.00 mm (4.6457 inches) with a 71.00 mm (2.7953 inch) flute length and a straight cylindrical shank measuring 12 mm (0.4724 inches) in diameter. A tapered web configuration and regular right-hand spiral flute geometry promote chip evacuation and reduce cutting forces. Coolant-through capability supports extended tool life in difficult materials.

This drill is suited for production drilling in steel, stainless steel, cast iron, aluminum, and non-ferrous metals. It fits standard machining centers, CNC drill presses, and manual drilling equipment that accept straight-shank tooling. With a 5xD flute-to-diameter ratio and a maximum drilling depth of 56.00 mm (2.2047 inches), it handles through-hole and blind-hole work in both job-shop and production-floor environments. Machinists and toolroom technicians working to DIN 6537K specification will find this drill dimensionally consistent with that standard.

Key Features

• Solid carbide construction provides rigidity and wear resistance beyond high-speed steel alternatives
• Multilayer TiAlN coating extends tool life in ferrous and abrasive workpiece materials
• 140-degree point angle reduces thrust force and improves centering on entry
• Coolant-through design delivers coolant directly to the cutting edge for heat management
• Tapered web configuration supports chip clearance and reduces walking on hard materials
• Conforms to DIN 6537K specification for consistent dimensional interchangeability

Compatibility

Designed as a DIN 6537K-specification straight-shank carbide jobber drill compatible with standard collet chucks, hydraulic tool holders, and drill press spindles accepting 12 mm shank tooling. Rated for primary workpiece materials including steel, stainless steel, cast iron, aluminum, and non-ferrous alloys.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Secure the straight cylindrical shank in a properly sized collet or chuck rated for the spindle speed being used, and verify runout before beginning a drilling cycle. Confirm coolant-through passages are clear and supply pressure is adequate before engaging the drill in the workpiece. Never force a carbide drill into a misaligned or interrupted cut without verifying fixturing rigidity, as carbide is brittle and susceptible to fracture under lateral loading.