Accupro 77712065 Carbide Jobber Drill Bit 12 Mm Altin

Product Description

The ACCUPRO 77712065 is a solid carbide jobber-length drill bit designed for high-performance drilling in demanding materials. It measures 12 mm in diameter with an overall length of 132 mm and a flute length of 75 mm. The 140-degree split point geometry reduces walking and allows aggressive entry without a center punch. An AlTiN coating improves heat resistance and extends tool life in hard, abrasive, and high-temperature alloys. Coolant-through capability supports chip evacuation and thermal control during deep-hole operations. This bit suits machinists, tool-and-die shops, and precision fabrication environments where dimensional accuracy and tool longevity are priorities.

This drill bit is used in CNC machining centers, drill presses, and manual machines where consistent hole quality in tough materials is required. The straight-cylindrical shank fits standard ER collet chucks, drill chucks, and hydraulic toolholders across common spindle configurations. It is well-suited for drilling stainless steel, hardened alloys, titanium, cast iron, and high-strength steels. The 5xD flute-to-diameter ratio supports drilling depths up to approximately 2.362 inches without pausing to clear chips when coolant-through is active.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• AlTiN coating for elevated heat resistance and extended tool life
• 140-degree point angle reduces entry force and minimizes workpiece deformation
• Coolant-through design promotes chip evacuation and cooling at the cutting edge
• Web-thinned tapered web reduces thrust requirements and improves centering
• Diameter tolerance of -0.0005 to 0.0000 inches for consistent, close-tolerance holes

Compatibility

Designed as a high-performance replacement or direct-use solid carbide jobber drill for CNC and manual drilling applications requiring a 12 mm straight-cylindrical shank tool with coolant-through capability.

Installation Notes

Installation should be performed by a qualified machinist following standard toolholding procedures. Ensure the spindle and toolholder are clean and free of debris before seating the shank. Verify that the machine's coolant-through system pressure is appropriate for the material and depth being drilled. Do not exceed the recommended drilling depth for the flute length to avoid chip packing and tool breakage.