40mm Universal Rotary Union, 1.5 Inch Self Aligning Swivel Joint for Water Air Steam
Overview
The DN40 universal rotary union is a low speed single passage rotating joint designed for reliable fluid transfer between stationary supply lines and rotating equipment. With a 40mm inner diameter equivalent to 1.5 inch nominal bore, this rotary joint delivers high flow capacity while maintaining a compact footprint. The self aligning design with 20 degree floating angle automatically compensates for minor misalignment, reducing shaft stress and extending seal service life.
Key Specifications
| Parameter | Specification |
|---|---|
| Model Type | Universal Rotary Union / Swivel Joint |
| Inner Diameter | 40mm (DN40 / 1.5″) |
| Max Speed | <=10 RPM |
| Max Pressure | <=1.0 MPa |
| Max Temperature | <=200 C |
| Floating Angle | 20 deg (Self Aligning) |
| Applicable Media | Water, Air, Saturated Steam |
Core Advantages
1. Self Aligning 20 Degree Floating Design
The rotor freely adjusts within a 20 degree floating range during operation. This compensates for installation misalignment between the shaft and the media supply pipe, minimizing vibration and mechanical stress on the bearings and seals.
2. Stable Low Speed Performance
Engineered for applications up to 10 RPM, the rotary union ensures smooth, leak free operation in low speed rotating tables, rollers, turntables and indexing machinery.
3. High Pressure and Temperature Capability
Rated for working pressures up to 1.0 MPa and temperatures up to 200 C. The sealing system remains stable under continuous saturated steam service, making it suitable for steam related industrial processes.
4. Multi Media Compatibility
A single universal model handles water, compressed air and saturated steam. This eliminates the need for separate rotary joints per media type, simplifying inventory and reducing procurement cost.
5. Low Maintenance and Leak Proof
The optimized seal structure provides long term leak free performance. The self aligning capability reduces seal wear, extending maintenance intervals and lowering total cost of ownership.
6. Cost Effective Solution
The universal design saves approximately 200 EUR compared to equivalent dedicated rotary joint configurations, delivering strong value for equipment manufacturers and end users.
Typical Applications
- Packaging machinery and filling lines
- Textile dyeing and finishing equipment
- Rubber and plastics processing machinery
- Steel metallurgy rotary kilns and dryers
- 3C electronics automation production lines
- Steam heated rotating drums and corrugators
- Pneumatic clutch and brake rotating interfaces
