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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.

Short Description
DN40 high temperature resistant rotary joint
Model Type: Universal Rotary Union / Swivel Joint
Inner Diameter: 40mm (DN40 / 1.5")
Performance: ≤10 RPM, ≤1.0 MPa, ≤200°C
Floating Angle: 20° (Self-aligning)
Applicable Media: Water, Air, Saturated Steam
Advantage: Low maintenance, Leak-proof, Cost-effective

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

• Self Aligning 20 Degree Floating Design — The rotor freely adjusts within a 20 degree floating range during operation, compensating for installation misalignment and minimizing vibration and mechanical stress on bearings and seals.
• Stable Low Speed Performance — Engineered for applications up to 10 RPM, ensuring smooth, leak-free operation in low speed rotating tables, rollers, turntables and indexing machinery.
• High Pressure and Temperature Capability — Rated for working pressures up to 1.0 MPa and temperatures up to 200°C; sealing system remains stable under continuous saturated steam service.
• Multi Media Compatibility — A single universal model handles water, compressed air and saturated steam, simplifying inventory and reducing procurement cost.
• Low Maintenance and Leak Proof — Optimized seal structure provides long term leak-free performance; self aligning capability reduces seal wear and extends maintenance intervals.
• Cost Effective Solution — The universal design saves approximately 200 EUR compared to equivalent dedicated rotary joint configurations.

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

Caractéristiques / spécifications techniques

• Model Type: Universal Rotary Union / Swivel Joint
• Denomination (reference): DN40
• Inner Diameter: 40mm (DN40 / 1.5")
• Max Speed: ≤10 RPM
• Max Pressure: ≤1.0 MPa
• Max Temperature: ≤200°C
• Floating Angle: 20° (Self-aligning)
• Applicable Media: Water, Air, Saturated Steam
• Advantages: Low maintenance; Leak-proof; Cost-effective (approx. 200 EUR savings vs dedicated configurations)