Composite Straight Flute Drill Bit with High Fracture Resistance and Internal Coolant

In the field of efficient drilling and complex hole processing, tools with precision and efficiency are essential for production line optimization. The AMG internally cooled straight groove drill (double straight hole) D12.5 × 24.5 is engineered for high-precision, high-efficiency machining applications. This innovative tool combines multi-stage drilling, dual channel cooling, premium materials, and an optimized chip removal structure for superior performance in workpiece machining.

The AMG internal cooling composite straight groove drill is ideal for machining composite holes including stepped holes and through holes in automotive engine cylinder blocks, mold plates, and structural components.

• Cutting diameter accuracy: ± 0.01mm
• Hole wall roughness: Ra0.8~1.6 (material and cooling dependent)
• Excellent anti-chipping performance for intermittent cutting and deep hole machining
• Extended tool life with high machining stability and excellent balance

The drill features a two straight hole internal cooling structure where coolant flows directly through internal channels to the cutting edge during operation. This design effectively cools the tool and removes chips, preventing chip accumulation and thermal deformation. The straight groove geometry ensures smooth drilling, excellent guidance, and improved hole verticality and surface finish.