Guhring 9055230032600 Cobalt Jobber Drill Bit Size 30

Product Description

The GUHRING 9055230032600 is a cobalt jobber length drill bit in wire gauge size 30 (0.1285 inches decimal equivalent), built to DIN 338 standards. It carries an M35 cobalt steel grade, which provides added heat resistance over standard high-speed steel bits. The four-facet split point at 118 degrees reduces walking and lowers thrust requirements at entry. A regular spiral flute with a 5xD flute-to-diameter ratio evacuates chips efficiently. The bright, uncoated finish means the bit ships ready to use with no coating to chip or peel. This bit is suited for HVAC, plumbing, electrical, and general metalworking tasks where precise, clean holes in softer metals are required.

The 9055230032600 is rated for aluminum as its primary workpiece material, with material codes K, M, N, and P also covered, making it applicable across a range of non-ferrous and mild ferrous stock. The straight-cylindrical shank seats cleanly in standard drill chucks. With an overall length of 65 millimeters and a flute length of 36 millimeters, it fits standard benchtop drill presses and portable hand drills. Licensed trade professionals in HVAC, electrical, and plumbing work will find this size appropriate for pilot holes, knockout prep, and equipment mounting applications. Sold individually, one piece per package.

Key Features

• M35 cobalt steel construction for improved heat and wear resistance over standard HSS
• 118-degree four-facet split point reduces entry walking and improves centering
• DIN 338 standard jobber length with 65 mm overall length and 36 mm flute length
• Regular spiral flute at 5xD ratio for efficient chip evacuation in aluminum and similar materials
• Bright, uncoated finish — no coating degradation risk during use
• Web-thinned, tapered web configuration reduces cutting resistance

Compatibility

Designed as a DIN 338 jobber length replacement drill bit compatible with any standard drill chuck accepting a 3.26 mm straight-cylindrical shank. Suitable for use in portable hand drills, drill presses, and CNC drilling operations where wire gauge size 30 tooling is specified.

Installation Notes

This drill bit is installed and used by licensed electricians, HVAC technicians, plumbers, and general tradespeople. Secure the straight-cylindrical shank firmly in a keyed or keyless chuck before operation. Ensure the workpiece is clamped or secured to prevent movement during drilling. Do not exceed the maximum drilling depth of 1.225 inches (31.11 mm) to maintain flute clearance and chip evacuation.