How to Replace and Maintain Your Rotary Union for Optimal Performance
If your machine tool has been running for 10,000 or even 20,000 hours, chances are your rotary union has been working just as hard. These components deliver coolant through the spindle right where it’s needed to the cutting tool. But over time, they can wear down and might need a replacement. The good news? Swapping in a Deublin rotating union is simple when you know what you’re doing.A Simple Step-by-Step Process
Begin by attaching the supply hose to the union at the top. Next, connect the drain hose to the union. Ensure the drain line has an internal diameter of at least 1/4 inch (or 6 millimeters). Double-check that all supplied drain plugs are securely sealed to prevent any leaks.
Finally, connect the union to the machine. Make sure this step is done only after all hoses are attached to the union. Skipping this could potentially damage the union's bearings.
Before tightening everything, inspect all mounting surfaces to ensure they are clean and free of any debris, chips, or dents. These imperfections can cause runout or vibrations during operation. Another critical point—confirm the thread direction to match your machine. Some Deublin unions are designed with either left-hand or right-hand threads, so it’s important to verify this detail. Finally, tighten the rotor to the specified torque. Unsure about the exact torque value? Don’t hesitate to reach out to the All World customer service.
Gravity Matters
Proper drainage depends on gravity, which ensures that fluid always flows downward. To maintain effective drainage, the drain line must consistently slope downward at an angle of at least 15 degrees.
Ensuring these guidelines are followed will help prevent drainage issues and potential damage.
Avoid Side Loads
Ensure the union operates without side loads to avoid issues with sealing and bearing lifespan. Side loads typically result from supply hoses that are too tight, too short, or have sharp bends. To minimize side loads, use supply hoses with adequate length and curves. Installing an elbow fitting can help reduce stress caused by tight bends. Avoid using any mechanical restraints, as they also create side loads on the union, which can compromise the bearings and seals. By eliminating side loads from hoses or restraints, you can significantly extend the life of the union's bearings and seals.
If you're searching for the right rotary union replacement, our customer service team is here to help. Deublin, the world's leading manufacturer of rotary unions, offers cutting-edge technology designed for performance and reliability.
Why Choose Deublin?
Advanced Sealing Technology: Deublin’s closed seal technology ensures sealing surfaces remain in constant contact, reducing susceptibility to contamination.
Pop-Off® Seals: These innovative seals separate when pressure is absent, eliminating friction and enabling unlimited dry running at high speeds.
AutoSense® Technology: Combines Pop-Off® and controlled leakage designs, seamlessly adapting to both coolant and pressurized dry air with minimal wear.
SpindleShield®: Protects spindles from coolant ingress by detecting and alerting operators to unusual leakage.
For high-speed and high-pressure applications, Deublin’s multi-channel unions feature balanced mechanical seals, creating a durable, leak-proof connection that enhances productivity.
How We Can Help
Our customer service team can assist you in finding the perfect Deublin replacement for your needs or cross-referencing your existing rotary union. Have questions? We can connect you with one of our experienced engineers to ensure a smooth replacement process.
Contact us today or explore All World’s extensive inventory of in-stock parts, ready to ship the next day!
