Accupro 4500047 Solid Carbide Jobber Drill 8.60 Mm

Product Description

The ACCUPRO 4500047 is a solid carbide jobber-length drill bit designed for precision hole-making in demanding materials. It measures 8.60 mm in diameter (0.3386 decimal inch) with a 140-degree split point and a TiAlN (titanium aluminum nitride) coating that resists heat and extends tool life in ferrous and hard materials. The slow spiral flute geometry and UR-thinned web reduce cutting forces and improve chip evacuation in deep holes. This drill is suited for use in CNC machining centers and manual drill presses by machinists, toolroom technicians, and production operators working to tight tolerances.

This jobber drill is a fit for shops machining steel, stainless steel, cast iron, and similarly hard workpiece materials where a standard high-speed steel bit would wear prematurely. The 8.60 mm diameter and 4xD flute-to-diameter ratio make it a practical choice for through-holes and blind holes in aerospace, automotive, and general metalworking applications. The straight cylindrical shank seats in a standard drill chuck or collet holder without modification.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive materials
• TiAlN coating provides thermal protection and extends cutting life in ferrous materials
• 140-degree proprietary point geometry reduces entry burr and improves self-centering
• Slow spiral flute with UR-thinned web reduces thrust force and aids chip clearance
• Right-hand cutting direction with 2-flute configuration
• Straight cylindrical shank compatible with standard drill chucks and collet holders

Compatibility

Designed as a specialized solid carbide jobber drill suited for CNC machining centers and drill presses capable of running carbide tooling. Fits any chuck or collet holder accepting a 10 mm straight shank.

Installation Notes

Carbide drill bits require a rigid machine setup with minimal runout — use a precision collet or chuck rated for carbide tooling. Ensure the spindle and workpiece are secure before engaging the cut; carbide is brittle and susceptible to chipping from lateral shock or interrupted cuts. Coolant-through is not supported by this drill, so apply external coolant or cutting fluid as appropriate for the workpiece material. Follow applicable shop safety standards and machine-specific operating procedures when setting speeds and feeds.