The classification of swivel unions includes: water type, steam type, oil type, pneumatic type, special medium type, and so on
Swivel Unions is a fluid dynamic sealing connection device, whose core function is to transport media (liquids, gases, steam, etc.) from fixed pipelines to equipment that rotates or swings continuously 360 ° without leakage.
Below are our most trusted rotary joint series, available for standard or custom-engineered orders. As a manufacturer specializing in precision rotary sealing technology, SD SWIVELES Engineering Co., Ltd. brings together a dedicated team of certified mechanical engineers, application specialists, and production experts, each with decades of hands-on experience in the R&D of fluid transfer systems for paper, steel, rubber, plastic, and chemical processing industries.
SKT rotary joints are designed to solve the sealing problem of transferring media (such as cutting fluid, hydraulic oil, compressed air, etc.) from fixed pipelines to rotating components. Its core advantage lies in its ability to maintain stable sealing performance at extremely high speeds and pressures, while also having a long service life and low maintenance costs
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The SRJ01-2001 series high-speed rotary joint is a precision fluid sealing component designed specifically for the Through Spring Cooling (TSC) system of CNC machine tool spindle centers. This series of products aims to directly replace the same specification rotary joints of South Korean SKT (Shin Kwang Tech) brand, and are widely used in equipment such as machining centers, CNC lathes, and high-precision milling machines
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The SRJ02-101 series Rotary Union is a core fluid transfer component designed specifically for CNC machine tools, machining centers, and turning centers. This series of products is mainly used to achieve stable delivery of coolant, cutting oil or compressed air from static pipelines to the interior of high-speed rotating spindles, commonly known as the "center water outlet" or "internal cooling" function
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SRJ03-101 high-speed rotary joint is a fluid connection device designed specifically for high-speed working conditions, mainly used to transport media such as coolant and compressed air from fixed pipelines to rotating equipment. This model of product usually has a dual path design, which can realize the input and output of media, and is widely used in CNC machine tools, machining centers, and various industrial scenarios that require high-speed rotation for heat dissipation or power transmission
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Resolve typical CNC spindle problems including dry-run seal failure, fluid blockage and high-speed rotation leakage. SRJ02-103 rotary joints adopt optimized flow path design and reinforced friction pairs, effectively cutting maintenance frequency, reducing equipment downtime and sustaining consistent machining precision.
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SKT high-speed rotary joint is known for its high precision, high speed, and excellent sealing performance. Targeting the complex installation environment and special working conditions required in industrial sites. This product aims to solve problems such as shaft diameter, pressure, temperature, or medium compatibility that cannot be matched with standard parts
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D20-003-210 is a D-series high-pressure low-speed rotary joint. This model is designed specifically for industrial fluid transmission and is mainly used to achieve reliable transportation of media such as hot water, steam, thermal oil, or compressed air between fixed pipelines and rotating components. Its core advantages lie in high reliability, long lifespan, and the ability to adapt to harsh working conditions, widely used in industries such as papermaking, printing, packaging, textiles, rubber, and plastic processing
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Pneumatic single channel stainless steel slip ring (also known as pneumatic rotary joint, pneumatic slip ring) is a precision mechanical device specifically used for transmitting compressed air or other gases between a fixed gas source and rotating components. This device supports 360 degree unrestricted continuous rotation and can maintain the sealing and stability of the gas path under high-speed rotation conditions
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SMW RJ-1 rotary joint is used for rapid replacement and high-precision positioning of machine tool fixtures. After it is inserted into the zero positioning base, it is driven by an internal spring to lock the steel ball, achieving axial tension and radial centering of the workpiece or fixture
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The 1109-020-188 rotary joint is a high-performance single channel high-speed rotary joint designed specifically for coolant or micro lubrication (MQL) applications. This model belongs to the 1109 series and is widely used in printing machinery, centrifugal pumps, and various high-speed rotating equipment due to its unique "disengagement" sealing technology and high reliability
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The 2620 series dual path high-speed rotary joint is a key fluid transmission component designed specifically for modern rubber and plastic machinery, especially tire forming machines, vulcanizing machines, and various high-speed rotary machine tool components
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The threaded flange connection high-temperature hydraulic multi-path high-pressure rotary joint is a key fluid transmission sealing device designed specifically for complex industrial environments. This equipment is mainly used to solve the problem of medium transmission between fixed pipelines and rotating components, and is particularly suitable for hydraulic transmission systems of hot rolling, cold rolling coiling machines, as well as heavy machinery such as uncoiler and spinning machines in the metallurgical industry
detailFrom precision machining to seal testing, every step follows international standards (ISO 9001, CE, ATEX) — delivering reliable fluid transfer solutions for paper, steel, chemical, rubber, and plastics industries.
High-precision CNC machining centers with micron-level tolerances ensure rotational stability and seal integrity, even at high speeds and demanding operating conditions.
316L stainless steel, alloy steels, silicon carbide, and carbon graphite — selected for maximum corrosion resistance, wear resistance, and compatibility with steam, hot oil, water, and air.
Balanced seal design with silicon carbide/graphite seal rings delivers ultra-low leakage rates under high-temperature and high-pressure conditions, ensuring extended service life and reduced maintenance.
20+ years of rotary joint engineering experience — offering customized design, sizing guidance, material selection, and on-site technical support for your specific application.
SDSWIVELES integrates 20 years of engineering experience with German-inspired quality management systems to form a standardized production process for precision rotary joints.
Every rotary joint undergoes a documented manufacturing sequence: precision CNC machining, seal face lapping, assembly, and final inspection. Each unit is traceable with individual quality records and serialized documentation.
Our quality department operates with full independence and authority to halt production if standards are not met. Dimensional tolerances are verified to ±0.01mm, and all units are pressure-tested to 1.5x working pressure before shipment.
Triple validation: "dimensional reports + material certifications + performance test records." Product qualification rates remain stable above 99%, eliminating performance variations and ensuring long-term operational reliability.
In the dynamic world of industrial manufacturing, every operation faces unique challenges. At SDSWIVELES, we tailor our engineering expertise to empower your success.
We help you optimize existing equipment with upgraded rotary joint solutions that reduce downtime, improve energy efficiency, and lower maintenance costs. Whether you need to replace aging components, enhance performance while meeting stricter industry standards, or adapt to evolving production demands — we deliver solutions that keep your operations running.
Stand out in a competitive market with custom-engineered rotary joint solutions that integrate seamlessly with your equipment designs. We support custom connection configurations, material specifications, compact form factors, and performance validation — helping you deliver reliable machinery to your customers.
Turn your engineering concept into reliable, production-ready hardware with our end-to-end partnership. From application analysis, material selection, prototyping, manufacturing oversight, to compliance testing — we guide you through every step of your journey from idea to implementation.
Get expert guidance on the right formulation for your brand — standard or custom-engineered, with low MOQ and free sample support.
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