Guhring 9005020085000 Extra Length Drill Bit Hss

Product Description

The GUHRING 9005020085000 is a high-speed steel extra length drill bit engineered for deep hole drilling applications. It carries a 0.3346 inch (8.50 mm) diameter with a parabolic flute design and a 130-degree point angle that aids chip evacuation and reduces thrust in demanding materials. The straight-cylindrical shank seats securely in standard drill chucks and collets. At a total flute length of 6.496 inches (165 mm) and a maximum drilling depth of 5.994 inches (152.25 mm), this bit reaches depths that standard length drills cannot. It is uncoated high-speed steel with a web-thinned, tapered web configuration. Machinists and tool and die professionals are the primary installers.

This drill bit is built for deep hole drilling in aluminum and other non-ferrous and ferrous workpiece materials. The parabolic flute geometry promotes efficient chip removal during extended-depth passes, reducing the need for peck-drilling cycles. With a flute-to-diameter ratio of 15xD and a right-hand cutting direction, it suits CNC machining centers, knee mills, and drill presses where consistent hole quality at depth is required. It conforms to DIN 1869 standards, making it a direct fit in applications specifying that designation.

Key Features

• 0.3346 inch (8.50 mm) diameter per DIN 1869 specification
• Parabolic flute design promotes chip evacuation in deep hole passes
• 130-degree point angle reduces thrust and improves entry accuracy
• Web-thinned tapered web lowers cutting resistance at the tip
• 15xD flute-to-diameter ratio enables drilling to 5.994 inches depth
• Right-hand cutting, 2-flute configuration for standard machine tool setups

Compatibility

Designed as a DIN 1869 Series 502 extra length drill bit suited for deep hole drilling operations in aluminum (material code K, N, P workpieces) using standard straight-cylindrical shank toolholders.

Installation Notes

Installation and use should be performed by qualified machinists familiar with deep hole drilling procedures. Secure the straight-cylindrical shank fully in a properly sized collet or drill chuck before operation, and verify runout is within acceptable limits for the application. Power down and de-energize the machine spindle before changing tooling. Consult machine tool manufacturer feed and speed recommendations for the workpiece material — do not exceed the rated maximum drilling depth of 5.994 inches for this bit.