Guhring 9026020040400 Jobber Drill Bit No.21 Carbide Tin

Product Description

The GUHRING 9026020040400 is a solid carbide jobber length drill bit sized to wire gauge No. 21, equivalent to 0.1591 inches in diameter. Built from submicron-grade carbide and coated with titanium nitride (TiN), this bit is engineered for precision drilling in non-ferrous and light alloy materials. The 130-degree point angle and parabolic flute geometry promote aggressive chip evacuation and reduce thrust force during entry. Overall length is 3.25 inches (82.55 mm), with a straight-cylindrical shank of the same 0.1591-inch diameter. It carries a web-thinned, tapered web configuration and is manufactured to ANSI specification. Licensed machinists, tool-and-die technicians, and maintenance professionals are the primary installers.

This Series 2602 bit is optimized for drilling aluminum and other non-ferrous metals, as indicated by the K, N, and P workpiece material codes. The parabolic flute design handles materials where chip packing and heat buildup are common concerns. With an 8xD flute-to-diameter ratio, this bit is suited for applications requiring deeper penetration relative to diameter. Typical use cases include precision hole production in machining centers, drill presses, and CNC equipment where tight diameter tolerances and consistent hole quality are required. The right-hand cut orientation is standard for conventional spindle rotation.

Key Features

• Submicron solid carbide construction for extended tool life in abrasive and hard non-ferrous materials
• Titanium nitride (TiN) coating reduces friction and improves wear resistance at the cutting edge
• 130-degree point angle with web-thinned, tapered web for reduced entry thrust and improved centering
• Parabolic flute geometry promotes efficient chip evacuation in deep-hole applications
• 8xD flute-to-diameter ratio supports drilling depths up to 1.93 inches (48.94 mm)
• Straight-cylindrical shank compatible with standard drill chucks and collet holders
• Manufactured to ANSI specification with a diameter tolerance of plus 0.000 to minus 0.018 mm

Compatibility

Designed as a standard jobber length drill bit for use in machining applications requiring a No. 21 wire gauge diameter (0.1591 inches). Compatible with equipment accepting straight-cylindrical shanks in the 0.1500 to 0.2000 inch diameter range per ANSI standards. Primary workpiece materials are aluminum and other non-ferrous alloys (material codes K, N, P).

Installation Notes

Installation and use of this bit should be performed by qualified machinists or tooling technicians familiar with carbide cutting tool handling. Secure the shank fully in a compatible drill chuck or collet before operation and confirm runout is within acceptable limits, as carbide is brittle and susceptible to breakage from lateral load or vibration. Coolant-through capability is not available on this bit, so adequate flood or mist cooling is recommended when drilling deep holes or production volumes. Follow equipment manufacturer guidelines for spindle speed and feed rate when working with carbide tooling.