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.
GAT (such as Rotodisk SW/S series): using static hydraulic self compensating silicon carbide/ceramic seals, supporting up to 200-400 bar pressure and 100000 rpm speed (depending on the model), non-contact or micro gap sealing structure to achieve extremely low friction and zero leakage (dynamic ≤ 0.01 mL/h), the body is mostly made of high-precision steel or stainless steel
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ESX20M-756YSUS high-speed rotary joints are SUS stainless steel precision unions customized for CNC machine tools. Boasting anti-corrosion, low torque and vibration-resistant design, they support stable, leak-free high-speed transmission of coolant and oil mist for precision machining.
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ESX20M-8080YSUS series of bearingless rotary joints consists of a fixed part ha installed in a protective cover and a rotating part of the main shaft, without bearings. Due to the absence of built-in bearings, the vibration of this series of rotary joints is small, and their compact size contributes to the miniaturization of machine tools
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ESX20M-E016 flange connection high-speed rotary joints feature stable flange mounting structure and precision sealing system. Designed for high-RPM industrial equipment, these heavy-duty rotary unions deliver leak-free coolant and oil mist transmission with excellent vibration resistance.
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Troubled by spindle seal wear and fluid leakage during continuous operation? LX84-7920 rotary joints adopt optimized low-friction design, effectively resisting cutting fluid impurities and extending service life for precision machining equipment.
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Solve vacuum failure, impurity clogging and high-speed leakage of vertical spindle equipment. LX86V-234 vacuum rotary joints optimize drainage and sealing performance, reduce component wear and ensure long-term stable machining operation.
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RIX LX86M-234 built-in bearing rotary joints feature a professional double drain structure for vertical spindle mounting. Equipped with durable ceramic mechanical seals, these high-speed, high-pressure unions support 7MPa coolant and 1MPa oil mist delivery for stable CNC machining operation.
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Solve vertical installation drainage blockage and high-pressure leakage with LX86M-234 rotary joints. Optimized double drain design discharges cutting fluid impurities effectively, reducing seal wear and ensuring uninterrupted high-speed precision machining.
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LX86M-244 high-speed rotary joints are built-in bearing RIX/ROCKY precision unions for CNC spindles. Supporting 15000RPM high-speed operation and 7MPa high pressure, they stably transmit coolant and oil mist with anti-impurity ceramic sealing for precision machining.
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Industrial ROCKY center outlet high-speed rotary joints feature low-torque, anti-vibration and anti-clog design. Perfect for lathe and milling machine spindles, supporting long-cycle high-speed operation for through-spindle coolant and oil mist transmission.
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High-performance rotary joints specially designed for continuous steel casting production. Featuring high-temperature resistance, anti-scaling and durable sealing, they ensure stable long-cycle water and steam circulation for metallurgical casting equipment.
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Troubled by seal failure and leakage under high-speed and high-pressure spindle working conditions? RIX spindle rotary joints optimize pressure resistance and wear resistance, effectively reducing equipment failure and improving machining stability and efficiency.
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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