OVERVIEW

Official designation: Haag + Zeissler MRF-UDW (MRF-UDW Series, Multi-Passage Rotary Joint)

Role/Application: A multi-passage rotary union with a through-hole rotor, designed for around the shaft mounting, reliably transferring various media including high-pressure hydraulic oil and air.

KEY SPECS SUMMARY

Power: N/A

Interfaces / Ports: Up to 8 passages, typically 3/8 inch nominal size

Indicators: N/A

Operating Temp: Up to 90 degrees C (for liquids and air)

Platform / Compatibility: Universal use (cooling, heating, clamping, moving)

Limit: 250 bar (10 rpm, hydraulic oil) or 10 bar (air, water)

Lifecycle: Refer to the latest manufacturer manual.

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the sealing material used in the MRF-UDW series to ensure reliable, leak-free fluid transfer?

A: The sealing material is a PTFE-Compound-seal, noted for good sliding properties.

Wiring & Installation:

Q: What is the key installation advantage of the MRF-UDW design over standard rotary joints?

A: This model is designed for mounting around the shaft, making it self-supporting without extra suspension.

Troubleshooting & Compatibility:

Q: Does the maximum pressure of 250 bar apply uniformly across all media types in the MRF-UDW series?

A: No, 250 bar is for hydraulic oil, but air and water are limited to 10 bar maximum pressure.

Replacement & Upgrades:

Q: Can the MRF-UDW be upgraded to simultaneously transmit electrical signals alongside process media?

A: The MRF-E series is the dedicated variant combining media passages with an electrical slip ring for signal transmission.