Guhring 9012420039700 Screw Machine Drill Bit 0.1562 in

Product Description

The GUHRING 9012420039700 is a solid carbide screw machine length drill bit designed for high-performance drilling in cast iron and steel. It measures 0.1562 inches (5/32 inch) in diameter with a 140-degree split point (SU point type) and a web-thinned, parallel web geometry for reduced thrust and cleaner entry. The straight-cylindrical shank fits standard drill chucks and collets. Overall length is 55.00 mm with a 22.00 mm flute length, giving it the compact profile typical of screw machine length tooling. Right-hand cut with regular spiral flutes, it conforms to DIN 6539 and is built from submicron-grade carbide for extended tool life in production environments.

This bit is suited for close-tolerance drilling operations in ferrous materials, particularly cast iron and steel. Its 3xD flute-to-diameter ratio and maximum drilling depth of 0.6320 inches (16.05 mm) make it a practical choice for CNC machining centers, screw machines, and manual drill presses where short, rigid tooling is preferred. It is typically installed by machinists, tool-and-die professionals, and maintenance technicians working in metalworking and fabrication shops.

Key Features

• Solid submicron carbide construction for extended tool life in ferrous materials
• 140-degree SU split point reduces thrust and improves hole entry accuracy
• Web-thinned parallel web geometry lowers cutting resistance
• Screw machine length profile provides rigidity in short-reach applications
• Conforms to DIN 6539 specification
• Right-hand cut with regular spiral flutes for efficient chip evacuation

Compatibility

Designed as an OEM-style replacement or direct-fit tooling option for standard 5/32-inch straight-cylindrical shank drill chucks and collet systems used in CNC machining centers and screw machine setups targeting cast iron and steel workpieces.

Installation Notes

Installation is performed by machinists or tooling technicians. Ensure the machine spindle is fully stopped and locked out before changing tooling. Verify chuck or collet runout is within acceptable limits before seating the shank, as carbide is brittle and sensitive to side-loading. Follow shop-standard speeds and feeds for solid carbide tooling in the target workpiece material.