Guhring 9012420094000 Screw Machine Drill Bit 0.3701 in

Product Description

The GUHRING 9012420094000 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding production environments. It measures 0.3701 inches (9.40 mm) in diameter with a 140-degree split point (SU point type) and a web-thinned geometry that reduces thrust and improves centering. The two-flute spiral design with a parallel web configuration promotes efficient chip evacuation. The coated finish extends tool life in abrasive cutting conditions. At 84.00 mm overall length and a 40.00 mm flute length, this stub-length bit offers increased rigidity over jobber-length equivalents. It is intended for use by machinists, toolroom technicians, and production drilling operators.

This drill bit is optimized for drilling cast iron and steel workpieces, making it well-suited to CNC machining centers, drill presses, and screw machine operations where short, stiff tooling is required. The screw machine length format is standard in high-cycle production drilling where runout control and tool rigidity are critical. The 3xD flute-to-diameter ratio supports drilling depths up to 1.02 inches (25.90 mm) without coolant-through capability. It conforms to DIN 6539 specification, placing it within a standardized tolerance class for straight-cylindrical shank tooling.

Key Features

• Solid carbide submicron-grade construction for rigidity and wear resistance in ferrous materials
• 140-degree SU split point with web thinning for reduced entry thrust and improved self-centering
• Coated finish extends tool life in cast iron and steel applications
• Screw machine (stub) length format increases rigidity over jobber-length bits
• Right-hand cut, two-flute spiral geometry for efficient chip removal
• Conforms to DIN 6539 standard; diameter tolerance +0.006 to +0.021 mm

Compatibility

Designed as an OEM-style replacement or direct-use tooling for production drilling setups requiring a straight-cylindrical shank drill bit in the 0.3500 to 0.4000 inch (8.00 to 9.50 mm) diameter range per DIN 6539 Series 1242. Primary workpiece materials are cast iron and steel.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel using a compatible drill chuck or collet system rated for straight-cylindrical shanks. Verify spindle runout before seating the bit, as carbide tooling is sensitive to lateral loading. Power down and lock out the machine before changing tooling. Do not exceed the recommended maximum drilling depth of 1.02 inches without retracting to clear chips, as this bit does not have coolant-through capability.