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. 202-2815
Mfr. Part No.QSRL-1/4-6
BrandFesto
HK$174.79
Each
units
QSRL - Push In 6mm PBT - - - - 6mm - Push In
RS Stock No. 202-2877
Mfr. Part No.QSR-G3/8-12
BrandFesto
HK$454.43
Each
units
QSR - - PBT - - - - - - -
RS Stock No. 202-2878
Mfr. Part No.QSRL-3/8-10
BrandFesto
HK$382.34
Each
units
QSRL - Push In 10mm PBT - - - - 10mm - Push In
RS Stock No. 202-2830
Mfr. Part No.QSRL-3/8-12
BrandFesto
HK$389.32
Each
units
QSRL - Push In 10mm PBT - - - - 10mm - Push In
RS Stock No. 202-2705
Mfr. Part No.GF-1/4
BrandFesto
HK$1,260.35
Each
units
GF - - - - - - - - - -
RS Stock No. 202-2813
Mfr. Part No.QSR-M5-4
BrandFesto
HK$166.95
Each
units
QSR - Push In 4mm PBT - - - - 4mm - Push In
RS Stock No. 202-2817
Mfr. Part No.QSRL-G1/8-6
BrandFesto
HK$193.91
Each
units
QSRL - Push In 6mm PBT - - - - 6mm - Push In
RS Stock No. 196-4453
Mfr. Part No.KSH10-02S
BrandSMC
HK$132.725
Each (In a Pack of 2)
units
KSH R 1/4 Male Push In 10 mm PBT 1 MPa -5 (No Freezing)°C +60 (No Freezing)°C 1/4in 10mm Male Push In
RS Stock No. 202-2767
Mfr. Part No.QSR-3/8-8
BrandFesto
HK$242.58
Each
units
QSR - Push In 8mm PBT - - - - 8mm - Push In
RS Stock No. 202-2814
Mfr. Part No.QSRL-M5-4
BrandFesto
HK$166.95
Each
units
QSRL - Push In 4mm PBT - - - - 4mm - Push In
RS Stock No. 202-2834
Mfr. Part No.QSRL-G1/4-8
BrandFesto
HK$253.06
Each
units
QSRL - Push In 8mm PBT - - - - 8mm - Push In
RS Stock No. 202-2841
Mfr. Part No.QSR-G3/8-10
BrandFesto
HK$394.48
Each
units
QSR - Push In 10mm PBT - - - - 10mm - Push In
RS Stock No. 202-2776
Mfr. Part No.QSR-1/8-6
BrandFesto
HK$174.79
Each
units
QSR - Push In 6mm PBT - - - - 6mm - Push In
RS Stock No. 202-2755
Mfr. Part No.QSRL-G1/2-12
BrandFesto
HK$443.15
Each
units
QSRL - - PBT - - - - - - -
RS Stock No. 202-2711
Mfr. Part No.GF-3/8
BrandFesto
HK$1,242.31
Each
units
GF - - - - - - - - - -
RS Stock No. 202-2756
Mfr. Part No.QSRL-G3/8-10
BrandFesto
HK$420.37
Each
units
QSRL - Push In 10mm PBT - - - - 10mm - Push In
RS Stock No. 202-2778
Mfr. Part No.QSRL-1/8-4
BrandFesto
HK$166.95
Each
units
QSRL - Push In 4mm PBT - - - - 4mm - Push In
RS Stock No. 202-2783
Mfr. Part No.QSR-1/4-8
BrandFesto
HK$227.97
Each
units
QSR - Push In 8mm PBT - - - - 8mm - Push In
RS Stock No. 202-2848
Mfr. Part No.QSRL-G3/8-8
BrandFesto
HK$249.45
Each
units
QSRL - Push In 8mm PBT - - - - 8mm - Push In
RS Stock No. 202-2901
Mfr. Part No.QSR-1/8-4
BrandFesto
HK$166.95
Each
units
QSR - Push In 4mm PBT - - - - 4mm - Push In