Guhring 9055100040400 Screw Machine Drill Bit

Product Description

The GUHRING 9055100040400 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding production environments. It measures 0.159 inches (wire size #21) in diameter with a 140-degree split point and a right-hand spiral flute geometry. The web-thinned SU point reduces entry force and improves chip evacuation. At 66 mm overall length with a 24 mm flute length and 6 mm straight-cylindrical shank, this short-length drill is built for rigidity in CNC and screw machine applications. Coolant-through capability supports high-speed, deep-hole cycles without recutting chips.

This drill bit is intended for machining cast iron and steel in precision manufacturing environments. Screw machine length drills are commonly used in CNC turning centers, machining cells, and automatic screw machines where a short, stiff tool is required to maintain tight tolerances. The 3xD flute-to-diameter ratio and DIN 6537 K standard construction make this a suitable option for production drilling where tool life and hole quality are priorities.

Key Features

• Solid carbide construction for extended tool life in ferrous materials
• 140-degree SU split point with web thinning for reduced thrust and clean entry
• Coolant-through design supports high-speed drilling and chip removal
• Screw machine length (short) geometry maximizes rigidity and minimizes deflection
• Right-hand spiral flute with regular helix for consistent chip flow
• Meets DIN 6537 K standard with m7 diameter tolerance for repeatable fitment

Compatibility

Designed as a high-performance replacement drill bit for applications involving cast iron and steel workpieces where DIN 6537 K screw machine length tooling is specified.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the spindle fully stopped and locked out. Verify that the straight-cylindrical shank is properly seated and clamped in a compatible collet or chuck rated for the shank diameter before starting the spindle. Coolant-through setups require confirmation that the machine coolant supply pressure and flow rate are matched to the tool before running production cycles.