Deep Hole Gun Drilling Machine | 100:1 Ratio, 0.01mm Accuracy

The Deep Hole Gun Drilling Machine is a specialized machining tool engineered to produce accurate deep holes with high length-to-diameter ratios in a single pass. At Taizhou Chuang Yuan Machine Tool Co., Ltd., established in 2003 in Jiangsu Province, China, we integrate research, development, production, and sales to deliver reliable precision machine tools to more than 20 countries. Our Deep Hole Gun Drilling Machine is built around a rigid cast iron bed, hardened and ground box ways, and a precision spindle that reaches 6,000 rpm. The coolant system supplies up to 100 bar pressure, which removes chips efficiently and controls thermal growth during long cycles. The machine handles hole diameters from 2 mm to 40 mm and depth-to-diameter ratios up to 100:1, with positioning accuracy of 0.01 mm per 300 mm and roundness within 0.02 mm. The production process begins with strict raw material inspection, followed by CNC machining of the bed and headstock, hand scraping of guideways, and dynamic balance testing of the spindle. Each unit then undergoes a 72-hour continuous running test that checks hole straightness, surface finish, and coolant pressure stability. A Siemens 828D CNC system manages feed rates, spindle speed, and coolant flow, and stores up to 500 programs for quick changeover. The automatic chip removal system reduces manual intervention and keeps the work area clean. In real applications, an Indian hydraulic cylinder manufacturer cuts 800 mm deep holes in 45 steel rods in 18 minutes per part, a German mold maker holds 0.018 mm concentricity in 1.2344 steel, and a Swiss medical producer drills 3 mm holes through 120 mm titanium bars within 0.012 mm tolerance. These results come from our focus on practical engineering: hardened guideways, precision ground ballscrews, and a high-pressure coolant unit that together lower tool cost per hole by up to 28% and raise throughput by 35%. Our factory covers the full process from casting and machining to assembly and testing, so we control quality at every step. We provide CE certification, a 24-month warranty, on-site installation, and online operator training. Whether you are in mold making, hydraulic equipment, aerospace, medical devices, or defense manufacturing, our Deep Hole Gun Drilling Machine offers a dependable, efficient, and cost-effective answer for deep hole challenges. We continue to invest in research and listen to customer feedback from Europe, Asia, South America, and the Middle East, refining our machines to meet diverse production environments and helping partners develop their local markets with confidence.