Deublin 55/57 Series Rotary Union Alternatives | Save Up to 60%

Description

Looking for a reliable alternative to the Deublin 55 Series rotary union?
We manufacture high-quality, fully compatible rotary unions designed to replace the Deublin 55 Series – at a fraction of the cost. Our rotary union is a direct replacement for the Deublin 55 Series, delivering exceptional performance for air, water, coolant, and light oil applications. With high-speed operation and leak-free sealing, it’s ideal for CNC machines, textile machinery, packaging equipment, and more.

As a leading Chinese factory producing replacement parts for the Deublin 55 Series Rotary Union, we combine excellent craftsmanship with affordable pricing to deliver outstanding value.

• Direct-fit rotary unions engineered to match or exceed OEM Deublin 55 Series specs.
• Advanced sealing systems and premium bearings for ultra-low torque and maximum durability
• Wide media compatibility: steam, water, air, thermal oil, and coolants
• Rugged materials designed for tough industrial applications and extensive use
• Lower Deublin 55 Series Rotary Union price points that help you reduce operational costs

Discover the smart choice for your rotary union needs with our dependable and budget-friendly solutions.

Universal 55 Series Dublin rotating union

DN10-50;
Single and dual channel designs;
Self-supporting swivel;
Radial housing connection;
Balanced mechanical seal;
3 leak ports;
Forged brass housing;
Stainless steel rotor;
Threaded leak port;
Splash-proof bearings; Nickel-plated and/or low-torque design.

Seal combinations – standard

• Graphite/copper, optional for water applications;
• Graphite/ceramic, hot oil, hot water, and saturated steam;
• Versatile applications;
• Seal combinations – E.L.S (Extended Life Seal);
• Tungsten carbide/ceramic, for harsh conditions (poor quality water) up to 90 degrees Celsius.

Key Features of Deublin 55/57 Series Rotary Union 

The Deublin Rotary Union is a high-performance solution designed for fluid transfer in demanding industrial applications. Key features include:

Versatile Design

Small size, light weight, low friction torque; Single-channel and dual-channel design with fixed supply pipe, single-channel spinner with pipe plug instead of elbow, allowing for flexibility in installation depending on the application requirements.

High-quality shell

Using imported bearings and seals, Choice of wrought copper shell, light weight, small volume, reliable sealing, and longer working life. The radial connection enhances the ease of integration into existing systems.

Balanced Mechanical Sealing

Balanced mechanical seal silicon carbide seals extend service life even under harsh operating conditions. Ensures a leak-proof operation, extending the life of the rotary union and reducing maintenance costs. The rotor seal is securely keyed to prevent slippage, enhancing operational reliability.
Adopting plane sealing technology, using impregnated graphite, bronze, tungsten carbide, and other materials to make it more wear-resistant and longer life.

Support customization

Support drawing customization, non-standard customization, and customers can customize different types of joints according to their needs. Can issue drawings and process according to customer requirements.

Product Highlights of Deublin 55/57 Series Rotary Union 

Robust Construction & Material Excellence

Built with stainless steel, brass, or bronze for corrosion resistance and durability, ideal for harsh environments (e.g., high-temperature steam, hot oil, or chemical exposure).
Precision-balanced mechanical seals ensure leak-free performance even at pressures up to 50 bar (55 Series) and speeds up to 3,500 RPM.

Versatile Media Compatibility

55 Series: Handles water, hot oil, and general-purpose fluids up to 120°C, suitable for diverse industrial applications.
57 Series: Optimized for water-based media at lower pressures (10 bar) but higher reliability in continuous operations.

High-Speed Performance

Engineered for high rotational speeds (3,500 RPM), making them ideal for dynamic machinery like CNC spindles, packaging lines, and textile equipment.

Easy Maintenance & Longevity

Modular design allows quick replacement of seals and bearings, minimizing downtime.
Self-supporting rotor structure reduces wear and extends service life.

Industry-Specific Certifications

Compliant with ISO standards and ATEX directives, ensuring safety in explosive environments.

Customer Pain Points& Solution Provided by Deublin 55/57 Series

Customer Pain Points: Seal Failures

Customers often face premature seal wear due to poor water quality, high pressure, or exceeding operational specifications.
Solutions: Extended Life Sealing (E.L.S.) Technology
The 57 Series features Silicon Carbide/Silicon Carbide seals for severe conditions, such as poor water quality, ensuring longer operational life.

Customer Pain Points: Downtime During Maintenance

Replacing worn-out components can lead to extended machine downtime, impacting productivity.
Solutions: Efficient Maintenance Design
The quick replacement mechanism reduces downtime significantly by allowing on-site repairs without the need for full disassembly.

Customer Pain Points: Compatibility Issues

Matching the union with specific machine requirements can be challenging, especially in unique applications.
Solutions: Customizable Configurations
Mono and Duo flow designs cater to diverse industrial fluid transfer needs, ensuring compatibility with various applications.

Customer Pain Points: Corrosion in Harsh Environments

Exposure to aggressive media can lead to corrosion and reduced service life of components.
Solutions: Corrosion-Resistant Materials
Stainless steel components in media-contact areas prevent corrosion, even in aggressive environments.

Why Choose Our Dublin 55 Series Replacements?

🏭 Made in China = Factory-Direct Price
🔧 OEM Matching, Faster Lead Times
📦 Bulk Orders Welcome – Global Shipping
🛠️ Support for Custom Threads & Media
🗣️ Multilingual Export Team Ready to Assist

FAQ of Deublin 55/57 Series Rotary Union 

Q1: What media can the Deublin 55 Series Rotary Union handle?

A: It is compatible with air, water, steam, thermal oil, and coolant fluids, suitable for diverse industrial applications.

Q2: Are your rotary unions direct replacements for Deublin 55 Series models?

A: Yes, our rotary unions are precision-engineered to match or exceed Deublin 55 Series specifications for seamless interchangeability.

Q3: What are the maximum operating pressure and temperature?

A: Maximum water pressure is typically 150 PSI (10 bar), hot oil 100 PSI (6.6 bar), and saturated steam 15 PSI (1 bar) intermittently. Maximum operating temperatures range up to 250°F (121°C), depending on the seal combination.

Q4: How do I ensure correct installation?

A: Confirm thread types, clean surfaces, and follow the step-by-step installation process detailed above. Proper torque and alignment are critical for leak-free operation.

Q5: Can these rotary unions be used in explosive atmospheres?

A: Selected models are ATEX-certified and suitable for hazardous environments, complying with relevant safety standards.

Q6: What maintenance is required?

A: Maintenance includes regular inspection for seal wear and leak prevention. Many units feature lifetime-lubricated bearings, reducing maintenance frequency.

Conclusion

The Deublin 55/57 Series Rotary Union addresses critical customer pain points by offering durable seals, efficient maintenance solutions, and robust construction tailored for demanding applications. Its innovative features ensure reliability, reduced downtime, and long-term cost savings for industries such as manufacturing, paper production, and steel processing.

📩 Ready to get a quote? Send us the original Deublin part number, and we’ll provide a drawing, price, and lead time within 24 hours.