Guhring 9007690085000 Straight-flute Drill Bit 8.50mm

Product Description

The GUHRING 9007690085000 is a straight-flute solid carbide drill bit engineered for high-performance drilling in aluminum, aluminum alloys, and cast iron. Built from submicron carbide, the bit delivers consistent dimensional accuracy with a diameter tolerance of +0.006 to +0.021 mm. The 120-degree point angle and web-thinned geometry reduce entry force and improve chip evacuation in these materials. Internal coolant-through capability with round coolant holes keeps cutting temperatures in check during extended production runs. This is a right-hand cutting tool suited for CNC machining centers and production drilling applications where tool life and hole quality are critical.

The 9007690085000 belongs to GUHRING Series 769, a straight-flute design optimized for non-ferrous and cast materials that tend to produce long, stringy chips in spiral-flute configurations. The 7xD flute-to-diameter ratio gives this bit reach for deeper holes while maintaining rigidity. It is sized at 8.50 mm diameter with a 10.00 mm shank, making it compatible with standard ER and hydraulic toolholders found on most CNC machining centers and drill presses. Machinists and tool-room technicians in production and job-shop environments are the primary installers of this tool.

Key Features

• Submicron solid carbide construction for extended tool life in aluminum and cast iron
• Straight-flute geometry with web thinning reduces entry force and improves chip flow
• Coolant-through design with round coolant holes supports high-speed production drilling
• 120-degree standard point angle suited for aluminum, aluminum alloy, and cast iron workpieces
• 7xD flute-to-diameter ratio allows deeper hole depths without sacrificing rigidity
• Bright/uncoated finish maintains sharp edge geometry for precise tolerances

Compatibility

Primary workpiece materials include aluminum, aluminum alloy, and cast iron, as stated in the manufacturer specifications. The 10.00 mm straight shank conforms to DIN 6535HA, fitting standard ER collet chucks, hydraulic chucks, and shrink-fit holders that accept 10.00 mm shanks.

Installation Notes

This tool is installed by machinists or tool-room technicians on CNC machining centers or drill presses. Ensure the machine spindle and toolholder are clean and free of debris before seating the shank. Confirm coolant-through supply lines are active and at the correct pressure before commencing drilling cycles. Do not use this bit in interrupted-cut applications or on materials outside the rated workpiece material list, as solid carbide tools are sensitive to shock loading.