U DRILL HOLDER

External, Internal coolant supply

The U Drill Holder is specifically engineered to mount indexable U-drill (replaceable insert drill) onto CNC lathes and machining centers, delivering exceptional rigidity and concentricity for deep-hole and large-diameter drilling operations. Featuring both external and internal coolant supply channels, this holder effectively directs cutting fluid directly to the insert cutting edge, significantly reducing tool temperature, extending insert life, and improving chip evacuation in deep-hole applications. Manufactured from high-grade alloy steel with precision-ground bore and shank, the U Drill Holder achieves runout accuracy within 0.005 mm, ensuring stable cutting performance and superior hole quality. The robust clamping mechanism provides high torque transmission capacity, minimizing vibration even under interrupted cuts or heavy feed rates. Compatible with standard Mazak system interfaces, it integrates seamlessly into BMT and VDI turret configurations. Available in multiple shank diameters and drill bore sizes to accommodate a wide range of U-drill specifications. Ideal for automotive, aerospace, and precision parts manufacturing where tight tolerances, process reliability, and cycle time efficiency are critical requirements.