Kennametal 4149129 Solid Carbide Jobber Drill 1/8 in

Product Description

The KENNAMETAL 4149129 is a solid carbide jobber-length drill bit designed for high-performance drilling in demanding metalworking applications. It measures 1/8 inch (0.1250 inches) in diameter with a 140-degree split point and a multilayer TiAlN coating for extended tool life and heat resistance. The overall length is 2.598 inches (66.00 mm), with a flute length of 1.102 inches (28.00 mm). With a right-hand cutting direction and regular spiral flute geometry, this drill is suited for production environments where consistent hole quality and dimensional accuracy are required. It meets DIN 6537K specification and features coolant-through capability for chip evacuation and thermal control during deep-hole drilling operations.

This drill bit is used in ferrous and non-ferrous machining applications including steel, stainless steel, cast iron, and aluminum. The 5xD flute-to-diameter ratio makes it appropriate for standard jobber-depth holes in CNC machining centers, drill presses, and manual machines where straight-shank tooling is required. The 0.750-inch straight cylindrical shank fits standard drill chucks and collet systems. It is typically installed by machinists and toolroom professionals in manufacturing, fabrication, and job-shop environments.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• Multilayer TiAlN coating reduces friction and extends cutting life at elevated temperatures
• 140-degree point angle improves self-centering and reduces thrust force on entry
• Coolant-through design supports chip flushing and heat management during deep drilling
• Right-hand, regular spiral flute geometry compatible with standard CNC and manual setups
• Meets DIN 6537K specification for consistent dimensional and geometric tolerances

Compatibility

Designed as a high-performance OEM-style carbide jobber drill for use in steel, stainless steel, cast iron, aluminum, and non-ferrous workpiece materials as specified by the manufacturer. Compatible with standard drill chucks and collet holders accepting a 0.750-inch straight cylindrical shank.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Secure the shank fully in the chuck or collet to the manufacturer-recommended engagement depth before starting the spindle. Ensure coolant lines are open and flowing when using the through-coolant feature to prevent chip packing and premature tool failure. Follow applicable shop safety standards and machine guarding requirements during tool changes and drilling operations.