Guhring 9055140040400 Screw Machine Drill Bit 0.159in

Product Description

The GUHRING 9055140040400 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding industrial and machining applications. Built to DIN 6537 K standards, this bit measures 0.159 inches (Wire Size 21) in diameter with a 140-degree split point (SU type) and a web-thinned tip for reduced thrust and cleaner entry. The straight-cylindrical shank measures 6.00 mm in diameter, and the overall tool length is 66.00 mm with a flute length of 24.00 mm. Right-hand cut with a regular spiral flute geometry and a 3xD flute-to-diameter ratio, this bit is engineered for precision hole-making in cast iron and steel. It is installed and used by machinists, tool-and-die technicians, and CNC operators.

This drill bit is suited for screw machine operations, CNC machining centers, and manual drill press applications where tight tolerances and consistent performance are required. The solid carbide construction and coated finish make it appropriate for production drilling in cast iron and steel workpieces where tool life and hole quality are priorities. The screw machine length profile provides added rigidity compared to jobber-length bits, making it well-suited for close-tolerance work in short-depth holes up to 0.706 inches maximum drilling depth.

Key Features

• Solid carbide construction with coated finish for extended tool life in ferrous materials
• 140-degree SU split point with web thinning for reduced entry thrust and accurate positioning
• Screw machine length (3xD flute ratio) for increased rigidity in precision drilling
• Right-hand cut, regular spiral flute geometry for efficient chip evacuation
• Straight-cylindrical shank for compatibility with standard drill chucks and collet holders
• Conforms to DIN 6537 K specification and carries a high-performance grade rating

Compatibility

Designed as an OEM-style replacement and standard tooling option for screw machine and CNC drilling operations using straight-shank drill chucks or collet systems accepting a 6.00 mm shank diameter.

Installation Notes

Installation and tool changes should be performed with the machine fully powered down and locked out per applicable safety procedures. Secure the straight-cylindrical shank firmly in a properly sized drill chuck or collet to the depth recommended by the toolholder manufacturer. Solid carbide bits are brittle and should not be used in applications with excessive runout or lateral load. Verify spindle alignment and workpiece fixturing before beginning drilling operations.