Guhring 9002050040000 4mm Hss Jobber Drill Bit 118

Product Description

The GUHRING 9002050040000 is a jobber-length twist drill bit designed for general-purpose drilling in metal and cast iron. Built from M2 high speed steel with an oxide coating, it offers solid wear resistance in production and maintenance environments. The bit measures 4 mm in diameter with a 75 mm overall length and a 43 mm flute length, ground to a 118-degree standard point angle. A tapered web with web thinning reduces thrust force at the point and improves chip flow. Machinists, tool-and-die techs, and general metal fabricators are the primary users of this series.

This drill bit suits light to medium drilling operations in cast iron and steel workpieces. The 5xD flute-to-diameter ratio provides good chip evacuation in through-hole and blind-hole applications. The straight cylindrical shank fits standard drill chucks on benchtop drill presses, CNC machining centers, and handheld drill motors. No coolant-through capability is required for the typical applications this bit handles, making it straightforward to deploy in shop floor settings where coolant infrastructure is limited.

Key Features

• M2 high speed steel construction for hardness and heat resistance in metal cutting
• Oxide coating reduces surface friction and provides corrosion protection
• 118-degree standard point angle with web thinning for reduced entry thrust
• Right-hand spiral flute geometry promotes efficient chip evacuation
• Straight cylindrical shank compatible with standard drill chucks
• Conforms to DIN 338 specification for consistent dimensional accuracy

Compatibility

Designed as a general-purpose jobber-length drill bit for use in cast iron and steel workpieces, conforming to DIN 338 Series 205 standards and fitting any standard chuck sized for a 4 mm straight shank.

Installation Notes

Installation is performed by machinists or maintenance technicians. Secure the shank fully in a drill chuck and verify runout before drilling. Power down or de-energize the machine and engage any spindle lock before changing bits. Avoid excessive feed pressure, as this can cause bit deflection or premature edge wear, particularly in harder steel grades.