Pneumatic Rotary Unions

Pneumatic rotary unions, also known as rotary joints, are fittings used in pneumatic systems to enable rotation between parts. Pneumatic rotary fittings sit between a stationary part and a moving part. They allow compressed air or gases to flow easily from one part to another, and through to the rest of the pneumatic system. An example would be for the rotary union to sit between a pneumatic tube and a rotating drum.

Pneumatic rotary unions can be used in high-pressure environments and are designed to be able to withstand constant movement. They are generally made from stainless steel as it is also corrosion resistant.

Rotary unions consist of:

  • Housing
  • Shaft
  • Bearing
  • Seal

How does a pneumatic rotary union work?

Rotary unions act as an interface between the static and moving parts. Gas enters the pneumatic rotary union and is held within the union as it rotates. Once the openings of the valve meet, the gas is released from the fitting.Once it has left, more gas can enter the rotary union, and the process is repeated.


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Description Price Manufacturer Series Threaded Connection Tube Connection Material Maximum Operating Pressure Minimum Operating Temperature Maximum Operating Temperature Threaded Connection - Thread Size Tube Connection - Tube Size Threaded Connection - Gender Tube Connection - Type
RS Stock No. 202-2756
Mfr. Part No.QSRL-G3/8-10
BrandFesto
MYR247.10
Each
units
QSRL - Push In 10mm PBT - - - - - - -
RS Stock No. 202-2705
Mfr. Part No.GF-1/4
BrandFesto
MYR730.26
Each
units
GF - - - - - - - - - -
RS Stock No. 202-2767
Mfr. Part No.QSR-3/8-8
BrandFesto
MYR140.12
Each
units
QSR - Push In 8mm PBT - - - - - - -
RS Stock No. 202-2902
Mfr. Part No.QSR-M5-6
BrandFesto
MYR102.74
Each
units
QSR - Push In 6mm PBT - - - - - - -
RS Stock No. 202-2810
Mfr. Part No.QSR-1/4-6
BrandFesto
MYR102.74
Each
units
QSR - Push In 6mm PBT - - - - - - -
RS Stock No. 202-2878
Mfr. Part No.QSRL-3/8-10
BrandFesto
MYR220.85
Each
units
QSRL - Push In 10mm PBT - - - - - - -
RS Stock No. 202-2901
Mfr. Part No.QSR-1/8-4
BrandFesto
MYR96.43
Each
units
QSR - Push In 4mm PBT - - - - - - -
RS Stock No. 202-2841
Mfr. Part No.QSR-G3/8-10
BrandFesto
MYR227.87
Each
units
QSR - Push In 10mm PBT - - - - - - -
RS Stock No. 202-2786
Mfr. Part No.QSRL-M5-6
BrandFesto
MYR100.96
Each
units
QSRL - Push In 6mm PBT - - - - - - -
RS Stock No. 202-2755
Mfr. Part No.QSRL-G1/2-12
BrandFesto
MYR252.31
Each
units
QSRL - - PBT - - - - - - -
RS Stock No. 202-2829
Mfr. Part No.QSR-1/2-12
BrandFesto
MYR234.41
Each
units
QSR - - PBT - - - - - - -
RS Stock No. 202-2830
Mfr. Part No.QSRL-3/8-12
BrandFesto
MYR224.89
Each
units
QSRL - Push In 10mm PBT - - - - - - -
RS Stock No. 202-2739
Mfr. Part No.QSR-G1/4-8
BrandFesto
MYR144.09
Each
units
QSR - Push In 8mm PBT - - - - - - -
RS Stock No. 202-2770
Mfr. Part No.QSRL-3/8-8
BrandFesto
MYR131.68
Each
units
QSRL - Push In 8mm PBT - - - - - - -
RS Stock No. 202-2769
Mfr. Part No.QSRL-1/8-6
BrandFesto
MYR102.74
Each
units
QSRL - Push In 6mm PBT - - - - - - -
RS Stock No. 202-2848
Mfr. Part No.QSRL-G3/8-8
BrandFesto
MYR144.09
Each
units
QSRL - Push In 8mm PBT - - - - - - -
RS Stock No. 202-2855
Mfr. Part No.QSRL-G1/4-6
BrandFesto
MYR113.98
Each
units
QSRL - Push In 6mm PBT - - - - - - -
RS Stock No. 202-2768
Mfr. Part No.QSRL-1/2-12
BrandFesto
MYR234.41
Each
units
QSRL - - PBT - - - - - - -
RS Stock No. 202-2847
Mfr. Part No.QSRL-1/8-8
BrandFesto
MYR131.68
Each
units
QSRL - Push In 8mm PBT - - - - - - -
RS Stock No. 202-2813
Mfr. Part No.QSR-M5-4
BrandFesto
MYR96.43
Each
units
QSR - Push In 4mm PBT - - - - - - -