Guhring 9005520073000 Stub Drill Bit 0.2874 in Hss Parabolic

Product Description

The GUHRING 9005520073000 is a stub-length (screw machine length) high speed steel drill bit designed for high-performance drilling in production and machining environments. It measures 0.2874 inches (7.30 mm) in diameter with an overall length of 2.9134 inches (74.00 mm) and a flute length of 1.3386 inches (34.00 mm). The 130-degree split point and parabolic flute geometry work together to reduce walking, improve chip evacuation, and lower thrust requirements. The web-thinned, parallel web construction further reduces cutting resistance at the tip. This bit is intended for use by machinists, tool and die technicians, and maintenance professionals running production drilling operations.

This drill bit is rated for primary use in aluminum workpieces and is well suited to CNC machining centers, drill presses, and screw machine setups where a compact stub-length tool provides better rigidity and reduced deflection versus jobber-length alternatives. The bright uncoated finish makes this bit suitable for non-ferrous and softer materials where coating adhesion or heat buildup is not the primary concern. Its 3xD flute-to-diameter ratio supports drilling depths up to 0.9070 inches (23.05 mm).

Key Features

• Stub length design reduces deflection and improves rigidity in short-reach drilling applications
• Parabolic flute geometry promotes efficient chip evacuation and lowers cutting forces
• Web-thinned parallel web reduces tip thrust and walking tendency
• 130-degree point angle optimized for entry into aluminum and similar non-ferrous materials
• Bright uncoated HSS finish suitable for non-ferrous and softer workpiece materials
• Right-hand cut with straight-cylindrical shank for standard chuck compatibility

Compatibility

Designed as an OEM-style replacement or direct-use screw machine length drill bit conforming to DIN 1897 standards, suitable for use in standard drill chucks and collet holders accepting a straight-cylindrical shank at the 0.2874-inch diameter range.

Installation Notes

Installation and use should be performed by qualified machinists or tooling technicians familiar with drill press or CNC machining center operation. Secure the shank fully in the chuck or collet before initiating the spindle. Always power down and lock out the machine before changing or inspecting tooling. Follow shop safety protocols and applicable ANSI or OSHA machining standards when operating cutting tools.