1479 swivel unions

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The 1479 series Rotary Joint is a high-performance multi-channel fluid transfer component . This series of products is mainly used in industrial scenarios that require simultaneous transportation of multiple media or complex fluid control, especially in the fields of CNC machine tools, automated production lines, and precision machinery, with a wide range of applications. The core design concept is to achieve isolated transmission of media through independent internal channels, thereby avoiding cross contamination and improving the reliability of equipment operation.

1. Product Overview and Structural Features
The 1479 series belongs to the four channel air/hydraulic rotary joint, and some models support a five channel configuration. Its structural design emphasizes durability and sealing, with main features including:
Multi independent channel design: With four independent fluid channels, it is suitable for various functional combinations such as clamping, loosening, workpiece or tool sensing, and spindle cooling.
Anti cross contamination mechanism: There is a dedicated leakage port between channels 2 and 3, allowing the use of two different media (such as water for channels 1 and 2 and hydraulic oil for channels 3 and 4), effectively preventing mixing and contamination between different media.
Corrosion resistant materials: Key copper parts undergo special treatment to resist corrosion, ensuring long-term stability in humid or corrosive environments.
High performance sealing system: using hard chrome sealing surface combined with elastic force sealing technology, providing excellent sealing effect and extending service life.
Heavy load bearing support: Equipped with double widened ball bearings, it can withstand large lateral loads and adapt to high-speed rotation and complex stress conditions.

PRODCUT FEATUREA
Four independent large diameter fluid channels, meeting the requirements of high flow cooling and high flow hydraulic oil supply conditions
Set up isolation oil discharge chambers and external oil discharge ports between channels to completely isolate different media and prevent medium leakage and water pollution in the oil circuit
The widened spacing double ball bearing support structure can withstand large lateral loads generated by equipment rotation, ensuring stable operation and lower bearing wear
Multiple material options for the shell: lightweight aluminum alloy, wear-resistant brass alloy, 304 stainless steel, 316L corrosion-resistant stainless steel
Rotating rotor core materials available: carbon steel, high hardness tool steel, 304/316L stainless steel, suitable for high-pressure and corrosive fluid transport environments
Optional food hygiene grade, chemical strong corrosion resistant complete set of seals and accessories, suitable for food processing and fine chemical compliance production scenarios
Hard chrome hardened sealing end face+elastic PTFE composite sealing combination, strong sealing compensation performance, long-lasting service life under high and low pressure conditions
Optional NSK/SKF imported precision ball bearings with low rotational resistance and long-term continuous operation without jamming or abnormal noise
Standard four channel structure, customizable with multiple media channels as needed, expanding synchronous transportation scenarios for multiple pipelines
The installation size and thread specifications of the whole machine can directly replace the imported 1479 four-way rotary joint
Optimized high-temperature sealing formula, customized high-temperature specific sealing version for working conditions above 120 ℃

The 1479 series four-way rotary joint is a high flow multi-path fluid rotary component, belonging to the same four-way multi-media product line as the 1379. The core upgrade is a double bearing structure with increased diameter, doubled single channel flow rate, and widened spacing, which can bear larger lateral loads and is suitable for high flow cooling and high flow hydraulic circuit equipment.
The product is equipped with four completely physically isolated independent fluid channels, which can simultaneously transport various media such as compressed air, vacuum negative pressure, cooling water, hydraulic pressure oil, etc; An independent isolation oil drain chamber is reserved in the middle of channels 2 and 3, matched with an external G3/8 standard oil drain port, which seals the trace leakage medium and uniformly exports it. Structurally, it prevents oil and gas, oil-water, and air-water cross leakage pollution, ensuring that the entire machine tool pipeline is clean and free of impurities.
The installation dimensions and oil port specifications of the entire machine flange are completely compatible with the original product of SD 1479, and can be directly replaced without changing the equipment spindle flange or pipeline layout, greatly reducing the procurement cycle and after-sales costs of imported accessories; In addition to the standard four way model, we also support customers to customize five way multi-media rotary joints to meet the synchronous fluid supply needs of multiple workstations.
Widely applicable to CNC machining centers, large lathes, grinders, automated hydraulic fixtures, rubber molding rotary molds, and multi station vacuum adsorption equipment, especially suitable for heavy-duty working conditions with large spindle cooling water volume, hydraulic clamping circuit high flow oil supply, and equipment rotating end lateral force deviation. It perfectly solves the industry pain points of insufficient flow of small diameter 1379 joints and easy wear during heavy-duty rotation.
Design of large diameter flow channel
Compared to the 1379 small diameter model, the 1479 model increases the internal channel aperture, significantly reducing the flow resistance of cooling water and hydraulic oil, solving the problems of insufficient cooling flow and high spindle temperature rise in large machine tool spindles, and ensuring stable temperature of high-speed machining equipment for a long time.
Large spacing double bearing heavy-duty support
The widened arrangement of ball bearings at both ends disperses the radial, axial, and lateral composite loads during rotation. For heavy-duty fixtures and long cantilever spindle equipment, there will be no rotor eccentric wear or rapid seal failure, greatly extending the service life of the entire machine.
Layered isolation and anti leakage structure
The four channels are divided into two groups of medium zones, with channels 1 and 2 as one group and channels 3 and 4 as one group. There is a hollow isolation chamber in the middle of the two groups, and any trace leakage from any sealed channel will flow into the drain port and be discharged. Cooling water will not penetrate the hydraulic oil circuit, and hydraulic oil will not contaminate the vacuum workpiece, protecting the precision machine tool spindle hydraulic unit.
Modular detachable structure
The shell, rotor, bearings, and seals are designed in a separate manner. After the wear of the sealing ring and bearings, internal components can be replaced separately, without the need to replace the entire rotating joint, greatly reducing the long-term maintenance and procurement costs of the factory.
Flange assembly avoidance groove process
The flange position of the shell is integrated with a milling bolt avoidance groove. When the original flange neck of the machine tool is short, the fastening bolt can diagonally pass through the groove to lock the flange. On site installation does not require grinding or cutting of the shell, resulting in higher assembly efficiency.
Typical application industry scenarios
Large CNC machining centers, heavy-duty lathes
The main spindle hydraulic chuck clamping and releasing circuit+main spindle high flow cooling water circuit+tool blowing and dust removal multi-channel medium synchronous conveying, with a large diameter to meet the high flow cooling requirements, and an isolation chamber to prevent cooling water from mixing with hydraulic oil and damaging the main spindle hydraulic system.
Automated heavy-duty tooling and fixture equipment
High flow hydraulic clamping, high negative pressure vacuum suction of workpieces, and pneumatic loosening work synchronously in three channels. The tooling equipment with large lateral loads is adapted to widen the bearing structure, ensuring stable and leak free long-term continuous operation.
Rubber and composite material forming rotary mold
The mold circulating cooling water circuit, hydraulic drive oil circuit, and demolding air circuit are synchronously rotated and transported by multiple media. The brass shell has good thermal conductivity, and the stainless steel rotor is suitable for alternating cold and hot cycle working conditions.
Food processing rotary conveying equipment
Clear water cleaning, vacuum adsorption, pneumatic clamping multiple supply, optional 316L stainless steel shell+food grade PTFE sealing accessories to meet food hygiene production compliance requirements.
Multi station rotary automation platform
The heavy-duty rotary worktable integrates multiple hydraulic, pneumatic, and vacuum circuits, with a large diameter design to ensure synchronous medium supply to multiple workstations and simplify the complex external pipeline layout of the equipment.