As a renowned Chinese manufacturer and supplier of CNC Machining services, Sanluo Precision specializes in providing clients with customized, ultra-precision machining solutions. We are equipped to handle the custom fabrication of complex and challenging parts. Micro CNC machining places extremely high demands on equipment precision, requiring a positioning accuracy of ±0.001mm and exceptional structural rigidity. Typically, cutting tool diameters range from φ0.03mm to φ3mm, while spindle speeds can reach between 40,000 and 60,000 RPM.
Our custom services enable the machining of miniature parts with diameters ranging from φ0.05mm to φ10mm and lengths from 0.1mm to 50mm, achieving a machining accuracy of ±0.002mm. These parts are primarily utilized in fields such as miniature medical devices, precision instrumentation, micro-mechanics, and electronic components. By employing advanced technologies—including high-speed spindles, ultra-hard cutting tools, precision fixtures, and microscope-assisted operations—we deliver high-quality, precision miniature parts to our clients.
Micro CNC Machining is a precision manufacturing process that utilizes tiny, high-hardness tools to perform microscopic mechanical cutting. It achieves dimensional accuracies of ±0.001mm—and under specific conditions, as fine as ±0.0001mm—with surface roughness values ranging from Ra 0.001 to 0.02 μm. This process enables the creation of optical-quality mirror finishes free from thermal damage or micro-cracks, and is capable of fabricating complex micro-structures—such as micro-grooves and micro-lens arrays—with minimum feature sizes of less than 0.01mm. Sanluo Precision specializes in providing comprehensive, one-stop ultra-precision micromachining services—including micro grinding, mechanical micromachining, precision micromachining, CNC micro milling, micro Swiss machining, micro turning, and micro hole drilling.
Our capabilities encompass a wide range of processes such as micro-milling, turning, grinding, EDM, electrochemical machining, laser processing, and micro hole drilling. With a maximum precision of up to 0.0005mm, we can meet diverse processing requirements—ranging from tiny holes, deep holes, and micro 3D structures to hard and brittle materials, as well as optical and semiconductor components. We maintain strict control over materials and quality, serving a broad spectrum of industries including precision machinery, medical devices, optical components, and semiconductors. Furthermore, we support customized micromachining solutions, providing our clients with highly stable and ultra-precise micro-fabrication services.
Micro CNC machining is a micro-manufacturing technology that pushes the boundaries of traditional machining limits; micron-level processing precision allows for exceptional control over basic dimensions and geometric tolerances. Sanluo Precision’s micromachining capabilities cover a size range of approximately 0.01–10mm (for overall part dimensions), with minimum feature sizes reaching as small as 0.007mm. We handle diameters ranging from φ0.01mm to 5mm and lengths up to 50mm, specifically catering to tiny, precision components such as watch parts, precision instrument components, and minimally invasive medical devices. We maintain dimensional tolerances within ±0.001mm to ±0.01mm, roundness within 0.002–0.005mm, surface roughness (Ra) between 0.1–0.8μm, and geometric tolerances within ±0.002–±0.008mm—thereby fully meeting the rigorous requirements of precision micromachining.
Successful Micro CNC Machining relies on a sophisticated infrastructure—including micro CNC lathes, micro machining centers, and precision fixturing systems—to ensure stable processing and guarantee the on-time delivery of finished parts to our clients. Sanluo Precision’s facility is equipped with micro-CNC lathes featuring spindle speeds ranging from 15,000 to 30,000 rpm and tool radii from R0.02 to 0.5 mm. These machines are capable of machining micro-shafts ranging from φ0.1 to 10 mm in diameter, achieving a concentricity of approximately 0.003 mm. Utilizing guide-bushing support—a hallmark of Swiss-type (sliding-head) micro-lathes—the system maintains a tool overhang of ≤3 mm and accommodates length-to-diameter ratios of ≥40:1, ensuring minimal vibration and high precision during the machining of slender shafts.
Our micro-machining centers feature spindle speeds of 24,000 to 60,000 rpm, tool diameters ranging from φ0.05 to 3 mm, and a minimum feed increment of 0.0001 mm, enabling the stable and precise machining of micro-cavities, holes, and grooves. A microscope system provides real-time monitoring with 50x to 200x magnification, achieving tool-setting and measurement accuracies of up to 0.001 mm. This is complemented by ultra-precision fixturing—including micro-chucks and collets—which ensures a runout of less than 0.002 mm when clamping workpieces ranging from φ0.05 to 5 mm, thereby providing the essential hardware foundation for our micro-CNC machining operations.
The reliability of precision machining relies on systematic process planning and comprehensive inspection controls. Regarding tooling, Sanluo Precision employs micro-carbide tools (φ0.02–3 mm, cutting edge length ≤5 mm) and PCD diamond tools—specifically for machining non-ferrous metals—to achieve surface roughness levels as low as Ra 0.1 μm. In terms of cutting parameters, we utilize spindle speeds of 15,000 to 60,000 rpm, cutting speeds of 50 to 200 m/min, feed rates of 0.001 to 0.002 mm/rev, and cutting depths of 0.001 to 0.1 mm.
This approach, characterized by micro-cutting increments, guarantees exceptional dimensional accuracy and surface quality; furthermore, the process is supported by MQL (Minimum Quantity Lubrication) and atomized cooling techniques to minimize tool wear. During the inspection phase, video microscopes are utilized to measure dimensions with a magnification range of 100–500x and an accuracy of 0.001 mm. Additionally, vision measuring systems are employed to perform 2D profile measurements with an accuracy of approximately 0.002 mm. White light interferometers are used to analyze surface topography with nanometer-level resolution, ensuring that the results of our high-precision machining processes are both quantifiable and traceable.
As an experienced manufacturer and supplier of Micro CNC Machining solutions, we have successfully delivered a wide range of products to high-end industries, where they have demonstrated long-term stability and reliability in practical applications. In the medical device sector, Sanluo Precision supplies components for minimally invasive surgical instruments—specifically, 316L stainless steel micro-shafts (ranging from φ0.02–3 mm in diameter and 0.10–50 mm in length)—featuring a surface finish of Ra 0.2 μm and completely free of burrs. We also produce dental drills with diameters ranging from φ0.1–1.5 mm and helix angles between 25° and 35°, renowned for their sharpness and durability; as well as titanium alloy implant screws (φ0.5–4 mm in diameter, with M0.6–M3.5 threads) featuring Grade 6 thread precision.
In the fields of precision instrumentation and electronics, we manufacture optical component mounts with bore diameters ranging from 0.05–3 mm, achieving a positional accuracy of ±0.002 mm and a concentricity of 0.003 mm. We also produce copper alloy connector pins—ranging from φ0.02–1 mm in diameter and 0.3–15 mm in length—with a straightness tolerance of 0.001 mm. In the aerospace and sensor sectors, we produce stainless steel fuel injector components featuring precisely distributed micro-holes (φ0.1–0.5 mm), as well as titanium alloy components for precision sensors with a dimensional accuracy of ±0.003 mm.
Leveraging our advanced machining capabilities—including Swiss-style machining and micro CNC machining—Sanluo Precision has provided customized services to leading enterprises such as Mindray Medical and Huawei. With an annual output of hundreds of thousands of micro-components, and distinguished by our micron-level precision, consistent quality, and professional engineering support, Sanluo Precision has steadily emerged as a globally trusted manufacturer and supplier of CNC machining solutions.
