SUBSCRIBE TO OUR NEWSLETTER

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
rotary unionS

design capabilities

ports

  • SAE ORB ports (-4 through -32)
  • 4 bolt flange code 61 and 62 (all sizes)
  • Larger ports have a lower pressure rating
  • High pressures up to 6,000 PSI necessitate a more robust design; UEA utilizes a 4:1 safety factor in design

seals

UEA uses hydraulic rotary seal technology that provides a lubricated polymer blend of material. It is extremely extrusion resistant, non-aggressive to the mating dynamic metal surfaces, offers long term performance, lower cost and has a proven successful track record in demanding field applications for well over a decade.

ENERGIZER

  • Square ring AN11 70A NBR
  • Helps cap seal create a positive seal within its groove

U-cup

  • One on each end of swivel prevents external oil leakage
  • U-Cup seals are wider on one end and are tapered back. The wide end is installed facing toward the inside of the swivel.

cap seal

  • Good extrusion resistance (without degradation)
  • Non-aggressive to mating surfaces (won’t create wear path damage)
  • Side wall notches for increased shifting speed within seal groove
  • Wide temperature range (-40° F to 200° F)
  • High precision lathe cut seals of a lubricated polymer blend
  • OD and ID dynamic styles

wear ring

  • Acts as a bearing surface to prevent spool and housing from metal to metal contact

Excluder Seal

  • Acts as a dust and debris seal to shield ingress of outside contaminants

Thrust Washer

  • Acts as a bearing surface for thrust loads

ROTARY UNION SIZE

UEA can produce a large variety of rotary union sizes to meet various needs and applications.Factors that dictate rotary union size: center through-hole size; a liquid tight cord grip; the number, pressure rating, and size of ports; and 4-Bolt flange ports vs. SAE ORB ports

Small Rotary Unions

  • Internal bore diameter: 3“ to 5”
  • Overall length: 6” to 14”
  • Number of passages: 2 to 6

medium Rotary Unions

  • Internal bore diameter: 5“ to 7”
  • Overall length: 14” to 30”
  • Number of passages: 6 to 12

large Rotary Unions

  • Internal bore diameter: 7“ and up
  • Overall length: 30” and up
  • Number of passages: 12 and up

media

Nearly any non-flammable media can be sent through a rotary union. Examples include:
  • Hydraulic oil
  • Engine Coolant
  • R124A Refrigerant
  • Air
  • Fuels

learn more about our ROTARY UNIONS

MACHINING AND
DESIGN tECHNOLOGY

CLEAN ROOM
ASSEMEBLY

ENDURANCE
TEST STAND

SOLVING PROBLEMS IS OUR PASSION

LET US CREATE YOUR CUSTOM SOLUTION TODAY!

find your solution