SP Series U-Drill 12mm-50mm Indexable Drill Bit 2D/3D/4D/5D CNC Metal Drilling Tool Holder for SP Insert (5D, SP14-C40-SD47)

SP Series U-Drills feature a modular indexable insert design, eliminating the need to replace the entire tool after insert wear, significantly reducing machining costs; the entire series covers a diameter range of D12-D50mm and offers multiple diameter multiples of 2D/3D/4D/5D, easily meeting drilling needs of different depths and diameters. The tool body is made of high-strength alloy steel, which has good rigidity and strong vibration resistance. Combined with the optimized chip removal groove design, it can achieve high-speed and stable cutting and excellent surface finish. It is widely used in CNC lathes, machining centers and various metal cutting equipment, and is an ideal choice to improve production efficiency and reduce tool consumption.

• High Efficiency: Feed rate 2-3 times higher than ordinary drill bits, efficiency increased 6-7 times. No chip removal required, continuous machining.
• Economy: Indexable inserts, replace when worn, no regrinding required. Four cutting edges, high utilization. Machining diameter up to D50-60mm.
• High Precision: High hole accuracy and good surface finish. Can correct hole position accuracy. Can replace some boring tool work.
• Multifunctional: Can drill directly on inclined surfaces (<30°). Supports intermittent cutting, stepped holes, chamfering, and eccentric drilling. Adaptable to different materials by changing inserts.
• Excellent Chip Removal: Internal cooling system, short chips automatically removed. Smooth chip removal in deep hole machining.
• Simplified Process: No need for pre-drilling a center hole. Flat bottom surface of blind holes, eliminating the need for flat-bottom drill bits.