Searching for affordable Deublin rotary union alternatives without compromising quality?
We manufacture high-quality replacement units at unbeatable prices, with full compatibility and fast delivery. With years of engineering experience and global exports, we deliver high-performance products trusted by industrial clients worldwide.
Our 55/57 Series rotary unions are engineered as high-quality alternatives to Deublin originals, designed to meet stringent industrial demands at a competitive price. Suitable for handling multiple media, including water, steam, thermal oil, and coolant, these rotary unions ensure reliable, leak-free operation in rotary machinery.
Built with precision-engineered bearings and advanced sealing technology, our rotary unions deliver ultra-low torque and long service life, enabling smooth rotation and maintaining system integrity. Whether used in manufacturing, processing, or heavy industry, they integrate seamlessly into existing systems designed for the Deublin 55/57 Series.
Deublin rotary joints are primarily designed for cooling systems. They feature small size, light weight, and low frictional torque. Ball bearings ensure the coaxiality of the rotating tubes. The friction pair materials are available in various combinations, such as impregnated graphite, bronze, silicon carbide, and tungsten carbide, to withstand the effects of rust, scale, and other impurities on the sealing surface. Furthermore, the sealing surface is finished to a mirror-like finish, resulting in more reliable sealing, longer service life, and wide applicability.
| Feature / Specification | Original Deublin 55/57 Series | Our Replacement (Keypower) |
|---|---|---|
| Compatibility | OEM-specific | 100% Compatible with Deublin 55/57 |
| Material | Carbon Steel / Stainless Steel | Carbon Steel / Stainless Steel |
| Sealing Technology | Mechanical Seal / O-Ring | High-Precision Carbon/Graphite + Viton / NBR |
| Max Speed (RPM) | Up to 3000 RPM | Up to 3200 RPM |
| Max Pressure (Air/Water) | 150–200 PSI | 150–250 PSI |
| Number of Passages | Single or Dual | Single or Dual |
| Port Thread Types | NPT / BSP | NPT / BSP / Custom Thread |
| Bearing Type | Precision Ball Bearings | High-Speed Angular Contact Bearings |
| Seal Material Options | Standard Viton / Optional FKM | Viton, NBR, PTFE (Customizable) |
| Service Life | 1–2 Years (Typical) | 1–2 Years (Same as OEM) |
| Lead Time | 4–6 Weeks | 3–7 Days (In-stock or Quick-Make) |
| Price | $$$ (High OEM Cost) | $$ (Up to 60% Less) |
| Warranty | 12 Months | 12 Months |
| After-Sales Support | Through Distributor | Direct Engineer & Export Team |
Prices for rotary unions typically vary due to:
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