Guhring 9024630056100 Stub Drill Bit 0.221 in Carbide

Product Description

The GUHRING 9024630056100 is a stub-length (screw machine length) solid carbide twist drill bit designed for precision hole-making in demanding shop and field applications. Built to DIN 6539 standards, this bit features a 118-degree faceted point angle and a web-thinned tip geometry that reduces entry thrust and improves chip evacuation. At 0.221 inches in diameter, it belongs to the No. 2 wire gauge size range. The straight-cylindrical shank measures 5.61 millimeters and seats securely in standard drill chucks or collet holders. With a regular spiral flute and right-hand cut, this bit is well-suited for machinists, toolroom technicians, and precision fabricators working in production or maintenance environments.

This drill bit is rated as a general-purpose cutting tool with a primary workpiece material designation of aluminum, though its solid carbide K40 grade construction makes it capable in a range of non-ferrous and ferrous applications at appropriate speeds and feeds. The stub-length body — with an overall length of 2.598 inches — provides added rigidity compared to jobber-length bits, making it a preferred choice in CNC machining centers, drill presses, and turret lathes where overhang must be minimized. The 3xD flute-to-diameter ratio and 1.102-inch flute length support consistent chip clearance through the cut depth.

Key Features

• Solid carbide K40 grade construction for wear resistance and edge retention
• 118-degree faceted point with web thinning for reduced entry force and accurate starting
• Stub-length body (2.598 inches overall) provides rigidity and reduces deflection
• Right-hand cut with 2 regular spiral flutes for efficient chip evacuation
• Straight-cylindrical shank compatible with standard chucks and collet systems
• Manufactured to DIN 6539 specification for consistent dimensional tolerancing

Compatibility

Designed as a DIN 6539 stub-length carbide drill bit in the No. 2 wire gauge size range (0.2000 to 0.2500 inches), compatible with standard straight-shank drill chucks and collet holders that accept a 5.61-millimeter shank diameter.

Installation Notes

Installation and use should be performed by a qualified machinist or toolroom technician familiar with carbide tooling requirements. Ensure the machine spindle and chuck or collet are fully powered down and locked out before inserting or removing the bit. Carbide tooling is brittle — avoid side-loading, impact, or using this bit in hand-held portable drills where runout cannot be controlled. Verify spindle runout and chuck concentricity before use to protect the cutting edge and maintain hole tolerance.