Guhring 9055190074000 Cobalt Drill Bit 7.4 Mm Tin

Product Description

The GUHRING 9055190074000 is a cobalt jobber length drill bit designed for demanding drilling applications in metal and mixed-material environments. Built to DIN 338 standards, it features a 7.4 mm diameter with a titanium nitride (TiN) coating that extends tool life by reducing heat and friction at the cutting edge. The four facet split point geometry promotes accurate hole entry and reduces walking on startup. At 109 mm overall length with a 69 mm flute length, this bit fits standard jobber applications handled by machinists, tool-and-die technicians, and maintenance professionals working in production or field settings.

This drill bit is rated for use in aluminum, steel, stainless steel, and cast materials, covering workpiece material codes K, M, N, and P. It is suited for general-purpose hole-making in both manual and CNC drilling operations. The straight-cylindrical shank seats directly into standard drill chucks without adapters. The 5xD flute-to-diameter ratio and regular spiral flute design support efficient chip evacuation in through-hole and moderate-depth drilling. Maximum drilling depth is 57.9 mm.

Key Features

• M35 cobalt steel construction for heat resistance in ferrous and non-ferrous materials
• Titanium nitride (TiN) coating reduces wear and extends cutting life
• Four facet split point with web thinning for accurate entry and reduced thrust
• Right-hand spiral flute with tapered web for consistent chip removal
• DIN 338 standard compliance ensures dimensional interchangeability
• Straight-cylindrical shank fits standard drill chucks without sleeves or adapters

Compatibility

Designed as a jobber length drill bit conforming to DIN 338, suitable for use in standard drill chucks accepting a 7.4 mm straight-cylindrical shank across manual drill presses, hand drills, and CNC machining centers.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with drill press and CNC spindle operation. Secure the shank fully in the chuck before applying feed pressure, and verify chuck runout before production drilling. Always power down and lock out the machine before changing bits. Use appropriate cutting fluid or coolant where the operation permits, even though this bit does not support internal coolant through delivery.