The rotating unions are used in many manufacturing processes to cool, heat or transfer fluid (pneumatic or hydraulic) power.
Typical rotating unions feature deep groove ball bearings to support the rotating component against the stationary component and balanced, precision-engineered mechanical seals to seal the media flow.
The Deublin rotating unions, available from Norman G Clark , vary for each application, depending on design, bearing type, construction and material required.
The entire Deublin product range is manufactured at the cutting edge of technology from the initial drawing to the final production.
Modern CNC machining centres transform high quality materials into precision components. Once assembled every rotating union is dynamically pressure tested for leakage as part of the final inspection procedure prior to despatch.
A rotating union must be capable of containing high pressures while rotating at high speeds. Smooth, easy rotation can only be achieved by exactly matting the seal faces to minimise friction.
All Deublin seals have a surface finish of 4RMS and are micro-lapped to an optical flatness of better than 2 light bands or 0.000023” for dependable, leak-proof operation.
The seals are then enclosed in housings that are machined on CNC turning machines to provide essential part-to-part precision.
The greater the pressure on a rotating seal face, the greater the friction, torque and wear on the union. That is why Deublin rotating unions feature balanced mechanical seals.
With this technology the thrust load or seal face contact pressure is kept to a minimum regardless of media pressure.
This reduces wear, resulting in longer seal life. The spring-loaded seal is keyed so that it cannot rotate or creep, which can cause premature failure in secondary seals resulting in a leaking union.
The Deublin 57 series water and hot oil union offers the following:
- Monoflow and duoflow design
- Self-supported rotating union
- Radial housing connection
- Balanced mechanical seal
- Keyed rotor seal
- Easy and quick replacement of sealing components (rotor seal, floating seal)
- Ball bearings lubricated for life - for poor water quality (Extended Life Seals)
- 3 vent holes
- Forged brass housing
- Stainless steel rotor (3/8" - 1")
- Special options: threaded vent holes