Accupro 4500181 Jobber Drill 17/64 in Solid Carbide Tialn

Product Description

The ACCUPRO 4500181 is a solid carbide jobber-length drill bit designed for high-performance drilling in demanding metalworking applications. It measures 17/64 inches (0.2656 inches) in diameter with an overall length of 4.2969 inches and a flute length of 2.2031 inches. The 140-degree point angle provides aggressive cutting geometry suited for hard and abrasive materials. A TiAlN coating adds thermal resistance and surface hardness, extending tool life in high-speed or dry-cutting operations. This bit is sized at a 5xD flute-to-diameter ratio and features R-thinned web geometry to reduce thrust and improve chip evacuation. Machinists and tool-and-die professionals are the primary installers.

The 4500181 is built for drilling stainless steel and similarly hard ferrous and non-ferrous alloys. Its right-hand spiral flute and straight cylindrical shank make it compatible with standard drill chucks and CNC toolholders. Coolant-through capability supports high-pressure coolant delivery for deep-hole applications where heat buildup and chip packing are concerns. Typical use cases include precision hole-making in fabrication shops, production machining environments, and maintenance operations where stainless steel or high-alloy workpieces are common.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• TiAlN coating improves thermal performance and extends tool life in high-speed applications
• 140-degree point angle reduces walking and suits flat or curved entry surfaces on hard stock
• R-thinned web reduces cutting thrust and improves chip flow
• Coolant-through design supports high-pressure internal coolant delivery
• Right-hand cut with regular spiral flute for standard CNC and manual drill press setups

Compatibility

Designed for use with standard straight-shank drill chucks and CNC toolholders accepting a 0.2656-inch (17/64 inch) shank diameter. Primary workpiece material is stainless steel, with applicability to other hard ferrous and high-alloy materials.

Installation Notes

Installation is performed by machinists or CNC operators. Ensure the machine spindle and chuck are fully powered down and locked out before inserting or removing the bit. Verify chuck runout is within acceptable limits before cutting - solid carbide is brittle and sensitive to lateral loading from misaligned toolholding. When using coolant-through capability, confirm the machine spindle and coolant system are rated for through-spindle delivery before pressurizing.