Guhring 9003050049800 Cobalt Jobber Drill Bit No. 9

Product Description

The GUHRING 9003050049800 is a cobalt jobber length drill bit sized to wire gauge No. 9, equivalent to 0.1961 inches in diameter. Built to DIN 338 standards, it features a 118-degree standard point angle, a spiral regular flute design, and an oxide coating over the cobalt steel construction. The overall length is 86.00 mm with a flute length of 52.00 mm and a straight-cylindrical shank. Web-thinned geometry at the tip reduces thrust and improves chip evacuation. This is a general-purpose drill bit used by machinists, pipefitters, ironworkers, and maintenance technicians working in production and field environments.

This drill bit is rated for cutting cast iron and steel, making it suitable for general metalworking applications in fabrication shops, maintenance facilities, and light industrial settings. The right-hand spiral flute provides reliable chip clearing in through-hole and blind-hole drilling operations. The cobalt composition improves heat resistance compared to standard high-speed steel, making it appropriate for harder ferrous materials and moderate-speed production drilling without coolant supply through the tool.

Key Features

• Cobalt construction with oxide coating for improved heat and wear resistance
• 118-degree standard point angle with web-thinned tip for reduced thrust on entry
• DIN 338 specification for consistent dimensional conformance
• Straight-cylindrical shank compatible with standard drill chucks
• Right-hand cut with regular spiral flute for efficient chip removal in ferrous materials
• No coolant-through requirement — suitable for dry or externally lubricated drilling

Compatibility

Designed as a general-purpose replacement or stock drill bit for use in standard drill chucks accepting a 0.1961-inch straight-cylindrical shank. Rated for primary workpiece materials including cast iron and steel per DIN 338 classification codes K and P.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or trade professionals familiar with metal drilling procedures. Secure the shank fully in a properly sized drill chuck before operation and verify chuck key is removed before starting the spindle. Use appropriate cutting fluid or lubricant on the workpiece material to extend tool life when drilling steel. Maximum drilling depth for this bit is 1.7530 inches; do not exceed this depth without retracting and clearing chips.