Hydraulic rotary joint
Hydraulic rotary joint, Hydraulic rotary joints, Hydraulic rotary union, Hydraulic rotary unions, Hydraulic swivel joint, Hydraulic swivel joints, Hydraulic swivel union, Hydraulic swivel unions
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.
High pressure high speed rotary union for CNC spindle through coolant. Low torque, leak-free, aluminum housing, single passage. Ideal for deep hole drilling. Custom sizes & OEM available.
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High speed pneumatic rotary joint rated at 3000 rpm. Reliable rotary union for compressed air, stable sealing under medium-high speed rotation. Compact structure, easy installation for automated machinery and rotary workstations.
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Grease & lubricating oil rotary union is specially designed for lubricant media. It continuously transfers grease or lubricating oil from stationary pipeline to rotating parts while 360° spinning, to realize centralized lubrication for bearings, gears and other rotary components. Widely used in construction machinery, mining equipment, rotary platforms, winches, cranes and automatic rotary fixtures.
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Modern asphalt distribution trucks generally have four fluid systems, namely hydraulic transmission system, thermal oil heating system, and asphalt distribution system System and compressed air system.
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The high-pressure car washing machine rotary joint is simply a connecting piece that allows the high-pressure water pipe to rotate freely 360 °. Its core function is to prevent the water pipe from getting tangled or knotted, making it more flexible during car washing
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The QR type heat transfer oil rotary joint is an efficient and reliable fluid connection device designed specifically for transmitting heat transfer oil in high-temperature environments. It is widely used in industries such as chemical, plastic processing, textile printing and dyeing, especially in processes that require precise temperature control and continuous operation. This article will provide a detailed introduction to the working principle, sealing structure characteristics, and advantages of QR type thermal oil rotary joints in practical applications
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The HK type slag cooler rotary joint is a key component of the end face sealing and balanced structure designed specifically for the drum slag cooler of circulating fluidized bed boilers. It achieves non-destructive transmission of cooling medium (water/hot oil) between the stationary pipeline and the rotating cylinder in the high-temperature slag cooling system, and supports the replacement of seals during operation
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WF type rotary joint is a reciprocating swing rotary sealing device, specially designed for non continuous rotation or reciprocating swing working conditions (such as mechanical arms, positioners), and solves the problems of leakage and rapid wear of traditional rotary joints during swing through a special sealing structure.
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Y2 type two-way hydraulic rotary joint is a self-supporting dual channel dynamic sealing device, designed to transfer hydraulic oil and other media from fixed pipelines to synchronous rotating components without damage
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Y3 type three-way hydraulic rotary joint belongs to the Rotary Union/Swivel Joint, which is specialized for low-speed and high-pressure hydraulic systems, solving the problem of continuous hydraulic oil delivery for rotating equipment such as rotary workbenches, coilers, and engineering machinery turntables
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Y4 type four way hydraulic rotary joint is a multi-channel fluid transmission sealing device dedicated to low-speed and high-pressure hydraulic systems. It has four independent and non interfering flow channels, which can synchronously transmit hydraulic oil, water or gas
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The Y5 five way hydraulic rotary joint is a mechanical sealing device designed specifically for low-speed and high-pressure working conditions, which enables continuous transmission of five independent hydraulic oil circuits between fixed pipelines and rotating components. Its core features include multi-channel isolation, end face mechanical sealing, and the need for external rotation prevention
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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