Guhring 9055190111100 Cobalt Jobber Drill Bit 7/16 in

Product Description

The GUHRING 9055190111100 is a cobalt (M35 grade) jobber-length drill bit designed for high-productivity hole making in a wide range of materials. It carries a Titanium Nitride (TiN) coating to extend cutting edge life and reduce heat buildup during operation. The bit features a 118-degree four-facet split point with web thinning for fast penetration and reduced walking on entry. Overall length is 142 mm with a flute length of 94 mm, conforming to DIN 338. The straight-cylindrical shank measures 7/16 inch in diameter and 48 mm in length. Right-hand, regular spiral fluting with a 5xD flute-to-diameter ratio provides efficient chip evacuation. The bit weighs 0.165 pounds.

This drill bit is suited for use on aluminum, steel, and a broad range of ferrous and non-ferrous workpiece materials, reflected in the primary workpiece material codes K, M, N, and P. The Series 5519 design follows DIN 338 standards and targets production drilling in job shop, maintenance, and fabrication environments. It is appropriate for use in hand-held drill motors, drill presses, and CNC machining centers where a straight shank is compatible. Maximum drilling depth is 3.045 inches (77.34 mm). Coolant-through capability is not included in this configuration.

Key Features

• M35 cobalt construction for improved heat and wear resistance compared to standard high-speed steel
• TiN coating reduces friction and extends tool life in mixed-material drilling applications
• 118-degree four-facet split point with web thinning reduces thrust and minimizes drill walking
• DIN 338 jobber-length standard for broad compatibility with standard toolholders and chucks
• Regular right-hand spiral flute with 5xD ratio promotes effective chip removal
• Tapered web configuration and web-thinned geometry support clean hole entry and exit

Compatibility

Designed as a DIN 338-standard jobber-length drill bit for use with any toolholder, chuck, or spindle accepting a straight-cylindrical shank of 7/16 inch (11.11 mm) diameter. Suitable for workpiece material categories K, M, N, and P as designated in the product specifications.

Installation Notes

Installation and use should be performed by a qualified machinist or tool-and-die technician. Ensure the drill press, hand drill, or CNC spindle is fully de-energized and locked out before inserting or removing the bit from the chuck. Verify chuck capacity accommodates a 7/16-inch straight shank before use. Follow applicable shop safety standards and manufacturer feed-and-speed guidelines for cobalt-class tooling.