Accupro 4500279 Jobber Drill 9.40mm Carbide Tialn

Product Description

The ACCUPRO 4500279 is a solid carbide jobber-length drill bit designed for high-performance drilling in demanding materials, primarily stainless steel. It features a 140-degree split point angle with a proprietary point geometry and R-thinned web for reduced entry force and improved chip evacuation. A TiAlN coating adds thermal and wear resistance, extending tool life under the elevated cutting temperatures common when drilling stainless and other hard alloys. At 4.0551 inches overall length with a 2.4016-inch flute length, it fits standard drill chucks and machining centers. This bit is used by machinists, toolmakers, and maintenance professionals on CNC or manual drilling equipment.

This drill bit is suited for production and maintenance drilling in stainless steel and similarly hard ferrous materials. The straight cylindrical shank at 10 mm diameter fits standard Jacobs-style chucks and collet systems. The 5xD flute-to-diameter ratio and coolant-through capability make it a practical choice for deep-hole applications where chip packing and heat buildup are concerns. It conforms to DIN specification, placing it within standard metric tooling parameters used across general machining, fabrication, and industrial maintenance environments.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• TiAlN coating for high-temperature performance and extended tool life
• 140-degree proprietary point with R-thinned web reduces thrust force at entry
• Coolant-through design supports chip flushing in deep-hole drilling
• Right-hand cutting, regular spiral flute, DIN specification compliance
• Straight cylindrical shank compatible with standard chuck and collet systems

Compatibility

Designed as a metric jobber drill for use in standard drill chucks and collet holders accepting a 10 mm straight shank, suitable for CNC machining centers and manual drill presses configured for metric tooling.

Installation Notes

Installation and use should be performed by a qualified machinist or toolroom professional. Ensure spindle is fully stopped and machine is in a safe state before inserting or removing the bit. Verify chuck or collet torque is sufficient to prevent slippage at rated feed and speed. When using the coolant-through feature, confirm coolant pressure and flow are appropriate for the machine spindle before initiating a cut.