As the precision component manufacturing industry demands increasingly higher standards for deep-hole machining precision, efficiency, and process versatility, single-model machines can no longer meet the diverse production needs for shafts, valve bodies, molds, large hydraulic cylinders, and small-diameter batch holes. Leveraging years of technical expertise, Dezhou Drillstar—a specialist in the R&D and manufacturing of deep-hole machining equipment—has created a comprehensive product line featuring both standardized and customized gun-drilling machines. With models ranging from single- to three-axis configurations and hybrid machines combining gun-drilling and BTA processes, the company offers one-stop solutions for deep-hole machining challenges in the automotive, hydraulics, mold-making, coal machinery, and heavy equipment sectors, helping manufacturers reduce costs, improve efficiency, and expand their machining capabilities.
Standardized General-Purpose Gun-Drilling Machines: A Cost-Effective Choice for Batch Processing of Basic Components
To address the mass production needs for standard small-to-medium-sized parts, Dezhou Drillstar has launched two standard series: the single-axis ZK21 and the three-axis ZKF21. These machines feature mature, stable structures and low maintenance costs, making them suitable for the vast majority of general deep-hole machining applications.
ZK2102 Single-Axis CNC Deep-Hole Drilling Machine: Specialized for Precision Small-Diameter Holes in Rotary Parts
This model is designed for high-precision, single deep-hole machining on small shafts and simple rotary workpieces. It offers selectable hole diameter ranges (3–20mm, 4–30mm, and 10–40mm) and machining depths from 500mm to 3000mm. It is ideal for components such as fuel pump nozzles, valve plates, small automotive shafts, pistons, and gun barrels, excelling in the production of single deep holes with high straightness.
The machine features an integrated, fully enclosed protective housing with three sliding doors, effectively eliminating issues like oil leakage and exposed wiring. Its compact design reduces the footprint by one-third compared to traditional models—with dimensions of 3500×3200mm for the ZK2102F and 4050×4050mm for the ZK2102A—making it suitable for workshops with limited space. Two bed options are available: a high-strength, age-treated cast iron bed offering superior rigidity and long-term precision retention, and a welded bed offering shorter delivery times and lower procurement costs, allowing customers to choose the best fit for their needs. The machine is equipped with standard TBT auxiliary tooling, ensuring easy assembly/disassembly and cost-effective spare parts. The cooling system has undergone a miniaturization upgrade, reducing the oil tank capacity from 1000L to 600L while incorporating a dual-stage (3-level and 5-level) filtration system for stable, long-lasting cooling and chip removal. Photos of the complete machine, bed comparisons, TBT tooling components, and the compact cooling tank structure clearly illustrate the equipment’s structural advantages.
ZKF2103 3-Axis CNC Deep-Hole Drilling Machine: A powerful tool for machining complex, multi-coordinate hole patterns in irregular parts.
Designed for complex, irregularly shaped components—such as molds and hydraulic valve blocks—featuring holes distributed across multiple positions, the ZKF2103 offers a drilling range of Φ4–30mm or Φ5–35mm and machining depths of 1000/1500/2000mm, enabling multi-coordinate deep-hole machining with a single workpiece setup.
The fully enclosed machine housing prevents oil leakage. The cooling system features a visual pressure control valve with real-time pressure display, making adjustments intuitive and convenient. Core support structures have been fully optimized: the clamping cylinder is centrally positioned to reduce overturning moments during machining and minimize workpiece deformation, while the guide bracket utilizes a four-slide block support structure to significantly enhance rigidity and guidance accuracy. Detailed design features include a rear-mounted motor layout that simplifies tool changes while protecting the power unit. It is equipped with specialized quick-change drill chucks and anti-drill devices to greatly improve tool replacement efficiency. The electrical cabinet is integrated into the exterior of the enclosure, saving floor space, ensuring tidy wiring, and facilitating easier machine transport. A dedicated drill bit rack is located at the right end of the enclosure for organized tool storage. The article includes photos of typical workpieces—such as hydraulic valve blocks and molds—alongside detailed views of core structural elements like the central clamping mechanism, four-slide guide bracket, rear-mounted motor, and integrated electrical cabinet. Customized Dual-Axis Special-Purpose Machine: Balancing Eccentric Hole Machining with High-Volume, Efficient Production
To address specific customer needs—ranging from eccentric and arrayed holes to the mass production of small-diameter holes—Dezhou Drillstar developed the ZK21 series of dual-axis special-purpose machines. Featuring a modular bed design that offers far greater process flexibility than single-axis equipment, the series comprises two models: the general-purpose ZK2103-2 and the high-speed mass-production ZK2101LGX2.
ZK2103-2 Dual-Axis CNC Deep-Hole Drilling Machine: Versatile Equipment for Various Part Specifications
Equipped with dual servo axes (X and Z), this machine handles concentric holes, eccentric holes, and coplanar hole arrays. It accommodates regular shaft components, plates, and simple irregular parts, with a drilling range of Φ4–30mm and a maximum depth of 1000mm; the machine occupies a footprint of 4350×3000mm. The modular bed design allows for the expansion of functional modules as needed. It comes standard with a T-slot worktable for rapid fixture changes and integrates the headstock with the worktable, supporting two machining modes—stationary workpiece with rotating tool, or synchronous rotation of both workpiece and tool—thereby broadening its processing capabilities. The cooling pressure regulation module is positioned at the front of the enclosure, allowing for convenient pressure monitoring and adjustment. The assembly diagram illustrates the layout of the cooling system, drill rod box, guide bracket, T-slot worktable, and headstock, visually demonstrating the flexibility advantages of dual-axis machining.
ZK2101LGX2 Dual-Axis Special-Purpose Deep-Hole Drilling Machine: A Benchmark for Mass-Producing Micro Oil Holes
Designed specifically for the high-volume machining of oil holes in automotive and motorcycle connecting rods, as well as small piston rods for coal mining machinery, this model handles hole diameters of Φ3–12mm, depths of 500mm, and workpiece lengths up to 600mm. It is purpose-built for assembly-line mass production. The machine features dual sliding side doors and an overhead-beam control panel, enabling unobstructed access from three sides; the modular bed combined with X/Z dual axes allows for the machining of both eccentric holes and irregular parts. Key mass-production highlights: Dual independent drill-rod boxes enable simultaneous single-process machining or the sequential completion of two process steps. A T-shaped worktable supports the simultaneous mounting of four fixture sets and operates on a four-station cycle; machining stations and loading/unloading stations operate independently, allowing for the unloading of finished parts and loading of raw blanks during the machining process, thereby drastically reducing auxiliary downtime. Visuals—including 3D models of connecting rods and piston rods, the machine’s overall appearance, the dual drill-rod box layout, and actual photos of the four-station worktable—clearly demonstrate the equipment’s advantages in mass production.
High-end flagship composite machine ZK2106A/W: Integrating Gun-drilling and BTA technologies—core equipment for machining large, heavy-duty shaft components.
The ZK2106A/W is Dezhou Drillstar’s flagship composite deep-hole drilling machine. It combines the two mainstream deep-hole machining technologies—external chip removal (gun-drilling) and internal chip removal (BTA)—into a single unit. It covers a drilling diameter range of Φ10–Φ60 mm, with a maximum machining depth of 2,500 mm, a maximum workpiece length of 4,000 mm, and a maximum eccentricity of 180 mm. Designed primarily for heavy shaft components such as large piston rods, hydraulic cylinders, and paper-rolling machine rollers, it is capable of machining complex hole patterns, including concentric, eccentric, indexed, and figure-eight holes.
The machine features several original structural innovations that overcome challenges inherent in heavy-duty machining: A stepped bed design expands the clamping range for large components and lowers the center height of the drill-rod box, significantly enhancing overall machine rigidity. The headstock is equipped with a servo-driven indexing mechanism and supports lateral movement, facilitating easy eccentric hole machining. A proprietary dual-station composite guide unit accommodates both gun-drilling (oil sealing and chip removal) and BTA (oil supply and guiding) functions, allowing for seamless switching between the two processes without changing parts. Industry-leading precision control is achieved through the use of linear scales on both the headstock and the laterally movable steady rest; coordinate display accuracy reaches 0.005 mm, ensuring precise control of eccentric machining dimensions. The cooling system utilizes a split oil tank and pump station design, featuring a flap-type level gauge, multi-stage centrifugal pumps, and an external suction filter; this stable, multi-stage filtration circulation supports long-duration, continuous cutting of heavy-duty workpieces. Visual assets—including the 3D assembly drawing, actual photos of paper-rolling machine roller workpieces, a dual-station compound guide unit, a digital readout panel for linear scales, and an independent cooling pump station assembly—fully showcase the robust capabilities of this flagship model.
The product lineup now includes the ZKF2108/BTA multi-axis deep-hole drilling machine (featuring external chip removal), rounding out the portfolio for large-diameter, multi-axis, heavy-duty machining. This enables coverage across the entire operational spectrum—from mass production of small micro-holes and standard mold/valve body machining to heavy-duty, multi-process machining of large shafts.
Core Competitive Advantages of Dezhou Drillstar Gun Drilling Machines
Comprehensive process coverage: Handles hole diameters from 3mm to 60mm and depths from 500mm to 4000mm. The range includes single-, dual-, and tri-axis models and integrates gun drilling with BTA processes, serving industries such as automotive components, hydraulic molds, construction machinery, coal mining equipment, and heavy-duty hydraulic cylinders.
Modular customization for cost control and efficiency: Machine beds, cooling systems, worktables, and auxiliary equipment are all standardized and modular, allowing for on-demand configuration. Options for both cast-iron and welded machine beds balance the need for long-term precision with cost-effective delivery.
Balancing precision with mass production: Features include four-station cyclic machining, synchronized operation of dual drill-rod boxes, and micron-level coordinate positioning. The machines meet the needs for high-precision prototyping of single parts while also supporting automated, high-volume assembly line production, effectively replacing high-end imported deep-hole equipment and reducing procurement and maintenance costs for enterprises.
Dezhou Drillstar’s full series of gun drilling and deep-hole machines is now available on the market. We provide tailored deep-hole machining solutions based on customer blueprints and production capacity requirements, continuously driving the domestic upgrade of precision deep-hole machining equipment and helping domestic manufacturers enhance their core machining competitiveness.
