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   Service: 888-688-0020

Custom Rotary Unions to Meet Your Fluid Power Needs

Positech’s custom, fluid rotary unions have been used worldwide for more than 30 years. We specialize in building custom rotary unions using transfer fluids (liquids and/or gases) where 360° continuous or oscillating rotation between two machine members is required. Our engineers work one-on-one with you and your team to design a custom rotary union that best fits your needs. And, we’re known in the industry for our fast, efficient service.

 Designed to Your Specifications

  • Multiple circuits for various port and mounting arrangements
  • Hydraulic or pneumatic
  • Mobile and in-plant equipment
  • 100% hydraulically tested during rotation
  • Customer approval of final envelope and porting

Full In-House Capabilities

All custom rotary union manufacturing processes are performed in the Positech facilities: machining, grinding, honing, assembly and testing. Cases are made from steel, and are bored, drilled, welded, stress relieved, honed, milled and deburred – oil seals are cut into the spool. Almost any kind of port can be put into the spool or case. Chrome plating of the rotary union case ID is available.
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