Guhring 9002050049000 Jobber Drill Bit 4.90 Mm Hss

Product Description

The GUHRING 9002050049000 is a high speed steel jobber-length twist drill bit designed for general-purpose drilling in metalworking applications. Built to DIN 338 standards from M2 grade HSS with an oxide finish, it delivers consistent performance on cast iron and steel. The 118-degree standard point angle provides reliable entry without specialized point preparation. At 4.90 mm in diameter and 86.00 mm overall length, this bit fits standard drill chucks and drill presses used by machinists, maintenance technicians, and fabricators working in production or field environments. The two-flute right-hand spiral configuration clears chips efficiently through the full flute length of 52.00 mm.

This jobber drill is suited for light to medium drilling in ferrous materials including carbon steel and cast iron. Its straight-cylindrical shank seats directly into standard keyless or keyed chuck jaws without adapters. The 5xD flute-to-diameter ratio and tapered web with web thinning reduce thrust load at the cutting tip, making it practical for use in bench drill presses, CNC machining centers, and handheld electric drills. It covers general maintenance, fabrication, and production drilling tasks in commercial and industrial settings.

Key Features

• M2 grade high speed steel construction with oxide coating for heat and corrosion resistance
• 118-degree standard point angle for general-purpose entry on ferrous materials
• DIN 338 specification ensures dimensional interchangeability with standard tooling
• Web-thinned tapered web reduces cutting thrust and improves chip evacuation
• Straight-cylindrical shank compatible with standard drill chucks without adapters
• Right-hand cut, regular spiral flute for efficient chip clearing in through and blind holes

Compatibility

Designed as a DIN 338 Series 205 jobber drill for use in cast iron and steel workpieces. Compatible with any standard drill chuck accepting a 4.90 mm straight-cylindrical shank. Suitable for primary workpiece material codes K and P per ISO classification.

Installation Notes

Installation is performed by machinists or maintenance technicians using standard drill press or handheld drill equipment. Secure the shank fully in the chuck jaws and verify runout before beginning a cut. Power down and de-energize the machine before changing bits or adjusting chuck position. Do not exceed the maximum drilling depth of 44.65 mm to avoid excessive heat buildup and premature edge wear.