Multi-Passage Rotary Unions

Multi-Passage Rotary Unions
Multi-passage (MP) rotary unions are used when more than one media are used simultaneously.
An MP rotary union provides multiple seals between stationary connections and rotating equipment, such as a drum, index table, clutch, or spindle. The multiple independent passages permit the flow of the same or different media into or out of the rotating equipment. Power and fluid transfer media typically used with multi-passage rotary unions include hydraulic fluids, cutting fluids, air, or inert gas. Other media include steam, water, thermal oil, and coolant. When electrical power, signal, or data transfer is combined with fluid transfer, MP rotary unions include a through bore to accommodate a slip ring or are integrated directly with slip rings.

Specification Information

  • Flow Passages: 2 to 12

  • Media Types: Air, Coolant, Cutting Fluids, Hydraulic Fluids, and Inert Gas

  • Passage Sizes*: 1/8", 1/4", 3/8", or 1/2"

  • Connection Type: NPT, BSPT, G/BSP (ISO 228), O-ring

  • *Consult factory for passage size options for units with more than eight passages.

Operating Information

  • Pressure (Max)**: 4,500 psig (310 bar)

  • Temperature (Max)**: 200° F (93°C)

  • Speed (Max)**: 250 rpm

  • Material Type: Steel, Stainless Steel, Aluminum, Brass

  • Mounting Options: Table, Journal, Accessory (example: electrical slip rings), Custom

  • **Dependent on application conditions.


Custom Solutions

Have an application that requires a specialized solution? Kadant Johnson’s product innovation team focuses on making the best solution in the shortest time possible. Kadant Johnson’s engineering team is committed to providing technology that meets customers’ application demands. Our goal is to work closely with our customers to develop reliable, efficient, and technically advanced products that add value by improving the process and the quality of the end product.

Complete Solutions

From products and services to training and support, we can design, manufacture, install, and maintain your fluid handling systems. Partnering with us ensures your operations are fully integrated for maximum performance.

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