Rotary Joints & Unions

A rotary joint, also referred to as a rotary union or rotating union, permits the flow of various media from a stationary supply pipe and into and/or out of rotating equipment. Heat transfer and hydraulic media typically used with rotary joints and rotating unions include steam, water, thermal oil, hydraulic oil, air, and coolant.

MediaProduct NameSize RangePressure (Max)Temperature (Max)Speed (RPM)
barpsi°C°F
Steam SX® Rotary Joint
SX_Union.jpg
 3/4" - 3" 20 300 288 550 550
EL Rotary Joint
els.jpg
 1-1/4" - 12" 50 725  288 550  200
Water RX® Rotary Union
RX_2_3.jpg
 3/8" - 6" 13 188 180 350 3,500
Thermal Oil SX® Rotary Joint
SX_Union.jpg
 3/4" - 3" 10 145 343 650 550
Hydraulic Oil RX® Rotary Union
RX_2_3.jpg
 3/8" - 6"  13  188 150  300 3,500
Coolant G™ Rotary Union
GFP.jpg
1/4" - 5/8"   400  5800 120  250  42,000
Air RX® Rotary Union
RX_2_3.jpg
 3/8" - 6" 13 188 180 350 3,500
G™ Rotary Union
GFP.jpg
 1/4" - 5/8" 13 188 120 250 10,000
All Types Multi-Passage Rotary Union
RJ_page_small.jpg
2 to 12 passages, each passage 1⁄8", 1⁄4", 3⁄8", or 1⁄2" 345  5,000  105 220 500

Custom Rotary Union 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.

Custom_Union_Red_Image.jpg  custom3.jpg custom2.jpg custom4.jpg