Guhring 9003050057500 Cobalt Jobber Drill Bit 0.2264in

Product Description

The GUHRING 9003050057500 is a cobalt jobber-length drill bit built for general-purpose drilling in ferrous materials. It carries a 118-degree cone relief point and a bright, uncoated finish. The bit measures 0.2264 inches (5.75 mm) in diameter with a straight-cylindrical shank of the same diameter, keeping it compatible with standard drill chucks. Overall length is 3.66 inches (93.00 mm) with a flute length of 2.24 inches (57.00 mm). Two spiral flutes in a regular helix evacuate chips efficiently on right-hand cutting applications. Web thinning at the point reduces thrust force and improves centering on entry. This bit conforms to DIN 338 standards and is sold individually.

This drill bit is suited for drilling cast iron and steel in manufacturing, maintenance, and fabrication environments. The cobalt substrate provides heat resistance beyond standard HSS, making it a practical choice when cutting harder steels or when coolant-through is not available. With a 5xD flute-to-diameter ratio and a maximum drilling depth of 1.905 inches (48.38 mm), it handles typical through-hole and blind-hole work in both machine-shop and field-service contexts. It is used by machinists, tool-and-die workers, pipefitters, and maintenance technicians who need a reliable general-purpose bit without a premium coating.

Key Features

• Cobalt construction for elevated heat resistance when drilling steel and cast iron
• 118-degree cone relief point with web thinning for reduced entry thrust and improved centering
• Bright, uncoated finish — no coating delamination risk on abrasive materials
• Right-hand cut, regular spiral flute for standard chip evacuation
• Straight-cylindrical shank fits standard three-jaw chucks without adapters
• Conforms to DIN 338 specification for consistent dimensional tolerances

Compatibility

Designed as a general-purpose jobber-length drill bit for use in standard drill chucks accepting a 0.2264-inch straight-cylindrical shank. Suitable for drilling cast iron and steel workpieces as specified by the manufacturer.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or tradespeople familiar with proper chuck clamping procedures and safe drilling practices. Secure the shank fully in the chuck and verify concentricity before operation. Use appropriate cutting fluid when drilling steel to extend tool life, even though the bit is rated for dry drilling. Follow applicable shop safety and OSHA standards for rotating tool operation.