Guhring 9055100074000 Screw Machine Drill Bit 0.2913in

Product Description

The GUHRING 9055100074000 is a solid carbide screw machine length drill bit engineered for high-performance drilling in cast iron and steel. Ground to a 0.2913 inch (7.40 mm) diameter with a 140-degree split point (SU geometry) and web-thinned tip, it reduces thrust and improves hole entry accuracy. The two-flute spiral design paired with coolant-through capability keeps cutting edges cool under continuous production loads. At 79.00 mm overall length with a 41.00 mm flute length, this is a stub-style bit sized for rigid setups where rigidity and chip evacuation both matter. Licensed machinists, toolroom technicians, and CNC operators working with ferrous materials are the primary users.

This bit is suited for screw machine operations, CNC machining centers, and drill press applications where short, rigid tooling is preferred over jobber-length bits. Primary workpiece materials are cast iron and steel. The straight-cylindrical shank at 8.00 mm diameter seats directly in standard collets and chucks. The 3xD flute-to-diameter ratio and maximum drilling depth of 38.00 mm make it appropriate for through-hole and blind-hole work within typical screw machine depth ranges. The parallel web configuration supports consistent chip formation across the cut.

Key Features

• Solid submicron carbide construction for extended tool life in ferrous materials
• 140-degree SU split point with web thinning reduces entry thrust and walking
• Coolant-through design supports high-speed production drilling and flush chip removal
• Two spiral flutes with regular helix provide reliable chip evacuation in cast iron and steel
• Straight-cylindrical 8.00 mm shank fits standard collet chucks without adapters
• Conforms to DIN 6537 K specification for consistent dimensional accuracy

Compatibility

Designed as a DIN 6537 K screw machine length carbide drill for use in ferrous materials including cast iron and steel; compatible with any spindle or chuck accepting an 8.00 mm straight-cylindrical shank. No specific machine model compatibility was provided in the product data.

Installation Notes

Installation and operation should be performed by qualified machinists or CNC technicians familiar with carbide tooling. Ensure the machine spindle and collet are fully powered down and locked out before loading or changing the bit. Seat the shank fully and evenly in the collet to prevent runout, which is particularly damaging to carbide. Activate coolant flow before beginning the cut when using the through-coolant feature, and verify coolant pressure is within the machine manufacturer's recommended range.