Guhring 9057460077000 Taper Length Drill Bit 7.7mm

Product Description

The GUHRING 9057460077000 is a solid carbide taper length drill bit engineered for demanding machining applications in difficult-to-cut materials. Part of the Series 5746, it features a 7.7 mm diameter (0.3031 inch), a 140-degree split point with SU geometry, and a nano-A coating for extended tool life and heat resistance. The web-thinned design reduces thrust force and improves centering accuracy. Coolant-through capability supports chip evacuation and thermal control during deep-hole operations. This bit is installed and operated by machinist professionals on CNC machining centers and drill presses.

This drill bit is suited for production machining of stainless steel, nickel alloys, and titanium alloys — materials known for work hardening and high cutting temperatures. The 7xD flute-length-to-diameter ratio and 76 mm flute length make it appropriate for taper-length hole depths in aerospace, medical device, and industrial manufacturing environments. Its straight cylindrical shank with 8 mm shank diameter fits standard collet chucks and drill chucks used in precision machine tool setups.

Key Features

• Solid carbide construction, Grade K40, for rigidity and wear resistance in hard materials
• nano-A coating reduces friction and extends tool life in stainless steel, nickel alloy, and titanium applications
• 140-degree point angle with SU point type and web thinning for accurate entry and reduced thrust
• Coolant-through design supports chip flushing and heat management in deep-hole drilling
• 7xD flute-to-diameter ratio provides extended reach for taper-length drilling requirements
• Right-hand spiral flute, regular helix for consistent chip evacuation

Compatibility

Designed for use in machining stainless steel, nickel alloys, and titanium alloys. The 8 mm straight cylindrical shank is compatible with standard collet chucks and drill chucks on CNC machining centers and precision drill presses accepting that shank diameter.

Installation Notes

This tool is installed and operated by qualified machinists on calibrated machine tools. Ensure the machine spindle and chuck are fully powered down and locked out before inserting or removing the bit. Use a properly sized collet or chuck to seat the 8 mm shank securely and minimize runout. Activate coolant-through supply before initiating the cut to maintain thermal control and chip evacuation throughout the operation.