rotating unions
rotating unions Refers to a mechanical device that allows fluid to be transmitted between rotating components, such as the rotary joint in a hydraulic system, which can prevent pipeline entanglement.
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.
HS-G type rotary joint is an industrial dynamic sealing device with bi-directional flow, fixed inner pipe, and threaded connection, designed to efficiently transport fluids (water, air, saline water, etc.) from fixed pipes to rotating rollers and reflux
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The elbow rotary joint is a pipeline connection device that combines flow direction change (elbow function) and relative rotation sealing transmission (rotary joint function), used to transport fluid from a fixed pipeline without leakage to the equipment end that needs to swing or rotate.
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The flange stainless steel rotary joint is a specialized mechanical sealing device made of stainless steel material, with flange connections at both ends, to achieve fluid sealing transmission between static pipelines and rotating equipment. Its core function is to prevent leakage and transport of media under 360 ° rotation
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Stainless steel rotary joint is a key industrial fluid dynamic sealing device, mainly used to transport media such as water, steam, oil, gas, etc. from fixed pipelines to rotating or swinging equipment. Its core feature is that the main structure is made of stainless steel material (such as 304, 316L, etc.), which has excellent corrosion resistance, high temperature resistance, and mechanical strength
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The high-speed rotary joint of a centrifugal pump is a fluid dynamic sealing device designed specifically for high-speed centrifugal pumps (usually>3000rpm). Its core function is to deliver the medium in the fixed pipeline to the high-speed rotating pump shaft or impeller system without leakage
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Internal thread high-speed rotary joint is a fluid dynamic sealing device designed specifically for high-speed working conditions, which uses internal thread connection to fix pipelines. Its core function is to transport media from stationary pipelines to rotating components without damage
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The high-speed rotary joint of the machine tool spindle is a fluid sealed transmission component designed specifically for CNC machine tool spindles. Its core function is to transport coolant or hydraulic oil from a fixed pipeline to the rotating spindle at high speeds without damage, achieving dual effects of central cooling and hydraulic loosening
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The CNC machining center water outlet rotary joint is a high-speed fluid sealed transmission device designed specifically for the internal cooling system of machine tool spindles. Its core function is to continuously and leak free coolant (water/emulsion) from stationary pipelines into the high-speed rotating spindle center hole, achieving internal cooling and chip removal of the tool
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Deep hole drilling high-speed rotary joint is a key fluid dynamic sealing device designed specifically for deep hole machining machines such as gun drills, BTA drills, spray suction drills, etc. Its core function is to transfer high-pressure coolant or hydraulic oil from a stationary pipeline system to the rotating drill rod without leakage while the spindle rotates at high speed, in order to achieve chip removal, cooling, and lubrication, ensuring the accuracy and efficiency of deep hole machining
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The 902 series is a single channel "detachable" rotary joint designed for machine tool coolant or MQL (micro lubrication) working conditions, with the core feature of Pop Off ™ Technology can achieve infinite dry operation without medium pressure, preventing seal damage.
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The clutch intake rotary joint for ball mills is a key fluid dynamic sealing device that connects a fixed gas source with rotating components such as the ball mill cylinder or transmission shaft
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Clean industrial-grade rotating joints dedicated for semiconductor ECD electrochemical deposition equipment. With excellent corrosion resistance, pollution-free transmission and high-cycle operational durability, they are widely used in wafer electroplating, thin-film deposition and semiconductor micro-processing precision fluid rotary delivery systems.
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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