OVERVIEW

Official designation: Haag + Zeissler UDW-BB (UDW-BB Series, Multiport Rotary Joint)

Role/Application: A compact, single-passage ball-bearing supported rotary union designed for reliably transferring air and vacuum to rotating equipment in pneumatic and automation systems.

KEY SPECS SUMMARY

Power: N/A

Interfaces / Ports: DN 8 (1/4 inch) or M5 connections

Indicators: N/A

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

Platform / Compatibility: Pneumatic applications, clamping/release functions

Limit: 9 bar maximum pressure (air), 0 bar vacuum maximum

Lifecycle: Refer to the latest manufacturer manual.

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the maximum rotational speed rating for the UDW-BB series rotary union under standard operating conditions?

A: The maximum rotational speed is 100 rpm, but some sources suggest a lower limit of 25 rpm.

Wiring & Installation:

Q: What feature simplifies the installation of the UDW-BB series when mounting onto a shaft?

A: The UDW-BB series is designed for around the shaft mounting.

Troubleshooting & Compatibility:

Q: What is the primary type of sealing used in the UDW-BB rotary joint for handling air and vacuum?

A: The primary sealing element employed in the UDW-BB series is an elastomer seal.

Replacement & Upgrades:

Q: Are there multi-passage variants of the UDW series available for handling multiple pneumatic lines simultaneously?

A: Yes, multi-passage variants such as the Series MBB and MRF-UDW are available for multiple circuits.