Custom Rotary Unions
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Custom Rotary Unions for transferring fluid and power Engineered rotary unions, swivels, and pipe connectors Engineered reliability and performance.

In 1933, Kadant Johnson invented the rotary pressure union. It was a device that eliminated the problems associated with stuffing boxes and packing glands and allowed fluids to be introduced into rotating equipment in an economical method. While our early years were focused on sealing steam and water unions, today we offer thousands of configurations of standard and custom rotary unions applied to a variety of media including water, air, coolant, oil, molten salt, and gas. From mechanical seals to our DuraSeal™ high-performance elastomeric sealing materials, Kadant Johnson can design the...

Rapid design and prototyping Our product innovation team focuses on making the best solution possible in the shortest time possible. We provide rapid design and manufacturing services to ensure our custom product solutions process puts our customers first and stays on schedule. Our streamlined custom engineered innovation cycle ensures your project moves quickly and seamlessly from concept to production. We specialise in “impossible deadlines” and work hard to ensure your satisfaction. Responsiveness and on-time delivery Kadant Johnson has established a solid reputation for responsiveness...

Multi-Passage Unions Two-passage, flange mounted Design Parameters Pressure: Rotation Speed: Multi-purpose, two-passage, flange mounted rotary union used for air service. Features include low torque and centerpass for wires. The rotary union is for use on a rotary indexing machine. Two-passage, flange mounted Design Parameters Pressure: Rotation Speed: Multi-purpose, two-passage, flange mounted rotary union used for water service. Features include a recessed and hardened ground shaft and a special bronze bearing for reduced friction. Two-passage, over-the-shaft Design Parameters Pressure:...

Two-passage, over-the-shaft Design Parameters Pressure: Rotation Speed: Two-passage, over-the-shaft rotary union for water service on an induction roll cleaning application. Features include lightweight construction and low torque design. Two-passage, thread mounted Design Parameters Pressure: Rotation Speed: Multi-purpose, two-passage, thread mounted rotary union used for mixing glass in liquid fusion. Features include a recessed and hardened ground shaft and deep groove radial contact bearings. Two-passage, 90 degree swivel Design Parameters Pressure: Rotation Speed: Deionized Water...

Multi-Passage Unions Two-passage, flange mounted Design Parameters Pressure: Rotation Speed: Multi-purpose, two-passage, hydraulic rotary union for an expanding mandrel application in the metals industry. Features include drain ports to channel oil to a safe place, as well as a ceramic coated nipple. Three-passage, flange mounted Design Parameters Pressure: Rotation Speed: Multi-purpose, three-passage, flange mounted rotary union used for CNC turning centres. Features include a recessed and hardened ground shaft, drain ports to channel leakage to a safe place, and deep groove radial contact...

Seven-passage, flange mounted Design Parameters Pressure: Rotation Speed: Multi-purpose, seven-passage, flange mounted rotary union for the tire industry. Features include a recessed and hardened ground shaft, through-bore to accommodate an additional rotary union, and deep groove radial contact bearings. Ten-passage, flange mounted Design Parameters Pressure: Rotation Speed: Multi-purpose, ten-passage, flange mounted rotary union for the tire industry. Features include a recessed and hardened ground shaft, through-bore to accommodate an additional rotary union, and deep groove radial...

Standard Rotary Unions Type RX for water, thermal oil, and air ( 3⁄ 8” to 6”) The RX® rotary union features a balanced seal and carbon-to-tungsten carbide seal package that makes the RX union more robust and able to run longer than other ball bearing designs. The RX union is supported by two widely-spaced anti-friction bearings, capable of intermittent dry running, and has the balanced seal-loading springs located outside the flow area to minimise potential for fouling. The RX rotary union is available in sizes from 3⁄8" to 6" and is rated up to 260°C (500°F), 10 bar (150 psi), and 3,000...