Guhring 9055140099200 Carbide Drill Bit 25/64 in

Product Description

The GUHRING 9055140099200 is a solid carbide screw machine length drill bit engineered for high-performance drilling in ferrous materials. Built to DIN 6537K standards, it features a 140-degree split point (SU geometry) with web thinning for reduced thrust and cleaner entry. The 25/64 inch (0.3906 inch) diameter bit runs a right-hand spiral flute with a straight-cylindrical shank measuring 10 millimeters in diameter. Overall length is 89 millimeters with a flute length of 47 millimeters. The coated submicron carbide substrate provides edge retention during high-cycle production runs. Licensed HVAC, machining, and metalworking professionals specify this bit for tight-tolerance hole work in cast iron and steel.

The 9055140099200 is suited for screw machine and CNC drilling operations in cast iron and steel workpieces. The 3xD flute-to-diameter ratio and parallel web configuration support chip evacuation in short-hole applications up to 1.265 inches (32.12 millimeters) maximum drilling depth. The Series 5514 designation places this bit in a Guhring high-performance solid carbide stub-length family intended for production machining environments where consistent hole quality and tool life are critical. It does not support coolant-through delivery and is designed for external coolant or dry cutting setups.

Key Features

• Solid submicron carbide construction for extended tool life in ferrous materials
• 140-degree SU point geometry with web thinning reduces entry thrust and walking
• DIN 6537K compliant — consistent dimensional standards for toolholder compatibility
• Coated finish improves wear resistance and heat dissipation
• Straight-cylindrical shank fits standard ER and drill chuck toolholders
• 3xD flute ratio promotes reliable chip evacuation in short-hole drilling

Compatibility

Designed as a screw machine length replacement or production drill for operations in cast iron and steel. Compatible with straight-bore drill chucks and ER collet systems accepting a 10 millimeter shank. Fits within the 0.3500 to 0.4000 inch drill bit size range per Series 5514 DIN 6537K specifications.

Installation Notes

Installation and use of solid carbide drill bits should be performed by qualified machinists or toolroom personnel familiar with CNC or manual drilling operations. Ensure the spindle and toolholder are fully powered down and locked out before changing tooling. Carbide is brittle — avoid side loading, interrupted cuts without proper feed management, or improper runout in the chuck, as these conditions can cause premature fracture. Confirm shank seating and collet torque to the toolholder manufacturer specification before initiating a cut.