Pneumatic Rotary Actuators

Pneumatic rotary actuators are types of devices that are operated by compressed air that produces a rotary motion via a shaft to control the speed and rotation of attached equipment.

An actuator receives and converts a source of energy and uses it to make something move or operate. Actuator types can be linear or rotary, meaning it cam move something in a circular spinning motion. When purchasing a rotary actuator things to considered include rotation angle, how much air is required for the task,  materials and interface.

Types of pneumatic rotary actuators:

Both designs are available as double action (air is supplied to both sides of the piston) or single action (air supplied to only one side).

  • Rack and pinion rotary actuators - this type of actuator has a better range of rotation and torque than the vane type and are usually larger in size and ideal for medium duty applications that need more speed.  They also have a longer lifespan then the vane type
  • Rotary vane actuators - these actuators are more limited in rotation than the rack types and often used for lighter loads.

How do pneumatic rotary actuators work?


Compressed air is connected into the pneumatic connection on the rotary actuator which drives a cylinder stroke into an oscillating rotary motion.

Where would you use a pneumatic rotary actuator?

These actuators are commonly used in industrial applications for conveying, clamping, transferring parts, positioning, and controlling valves and can be used in hazardous areas.


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Description Price Manufacturer Series Action Bore Rotary Angle Maximum Input Pressure Maximum Operating Pressure Absolute Maximum Pressure Force at 7 bar Cushioning Type Port Connection Weight Series Size Type
RS Stock No. 302-5800
Mfr. Part No.CRB1BW50-180S-XF
BrandSMC
SGD348.64
Each
units
CRB1 - 50mm 180° - - 1MPa - Rubber G 1/8 790g - -
RS Stock No. 227-4455
Mfr. Part No.MSQB20A
BrandSMC
SGD894.99
Each
units
MSQ - 18mm 190° - - 1MPa - Rubber M5 x 0.8 990g - -
RS Stock No. 796-7272
Mfr. Part No.CRB2BW30-90SZ
BrandSMC
SGD221.10
Each
units
CRB Double 30mm 90° - 1 MPa - - Rubber M5 x 0.8 199g - -
RS Stock No. 121-5336
Mfr. Part No.DFPD-40-RP-90-RS30-F0507
BrandFesto
SGD214.89
Each
units
- Single - 90° 8bar 8 bar - - Not Cushioned - 2087g DFPD Compact
RS Stock No. 838-9648
Mfr. Part No.MSQB20R
BrandSMC
SGD1,066.12
Each
units
MSQ Single 20mm 190° - 1 MPa - - Shock Absorber M5 x 0.8 990g - -
RS Stock No. 838-9604
Mfr. Part No.MKB12-10RZ
BrandSMC
SGD200.35
Each
units
MK Double 12mm 90° - 1 MPa 1.5MPa 56 (Clamp) N, 77 (Unclamp) N Rubber Bumper M5 x 0.8 128g - -
RS Stock No. 873-2657
Mfr. Part No.CRB2BW10-270SZ
BrandSMC
SGD212.31
Each
units
- Single 10mm 270° - 0.7 MPa 1.05MPa 10 (Thrust) N, 15 (Radial) N Air M3 x 0.5 32g - Standard
RS Stock No. 302-5793
Mfr. Part No.CRB1BW50-90S-XF
BrandSMC
SGD348.52
Each
units
CRB1 - 50mm 90° - - 1MPa - Rubber G 1/8 810g - -
RS Stock No. 227-4477
Mfr. Part No.EMSQB50A
BrandSMC
SGD1,116.59
Each
units
MSQ - 25mm 190° - - 1MPa - Rubber M5 x 0.8, Rc 1/8 2.1kg - -
RS Stock No. 796-7284
Mfr. Part No.CRB2BW20-180SZ
BrandSMC
SGD218.84
Each
units
CRB Double 20mm 180° - 0.7 MPa - - Rubber M5 x 0.8 103g - -
RS Stock No. 890-3263
Mfr. Part No.CRB2BW10-270SZ
BrandSMC
SGD214.46
Each
units
- Single 10mm 270° - 0.7 MPa 1.05MPa 10 (Thrust) N, 15 (Radial) N Air M3 x 0.5 35g - Standard
RS Stock No. 838-9635
Mfr. Part No.MSQB1A
BrandSMC
SGD459.17
Each
units
MSQ Single 1mm 190° - 0.7 MPa - - Not Cushioned M3 x 0.5 75g - -
RS Stock No. 715-0786
Mfr. Part No.CDRB1BW80-180S
BrandSMC
SGD628.98
Each
units
CDRB1 - 80mm 180° - 9.9 bar 1MPa - Rubber Rc 1/4 2kg - -
RS Stock No. 196-1182
Mfr. Part No.CRB2BW40-270SZ
BrandSMC
SGD307.72
Each
units
CRB2 Double 40mm 270° - 1 MPa 1MPa - Rubber Bumper M5 x 0.8 363g - -
RS Stock No. 873-6596
Mfr. Part No.NCRB1BW30-90SE
BrandSMC
SGD253.20
Each
units
- Double 30mm 90° - 0.23 MPa 1.5MPa - Not Cushioned - - - Compact
RS Stock No. 121-5296
Mfr. Part No.DFPD-10-RP-90-RD-F03
BrandFesto
SGD125.55
Each
units
- Double - 90° 8bar 8 bar - - Not Cushioned - 965g DFPD Compact
RS Stock No. 136-6562
Mfr. Part No.DRVS-25-90-P
BrandFesto
SGD211.28
Each
units
DRVS Double 25mm 90° - 8 bar - 40 (Axial) N @ 6 bar, 60 (Radial) N @ 6 bar Elastic M5 502g DRVS Standard
RS Stock No. 121-4309
Mfr. Part No.DFPD-40-RP-90-RD-F0507
BrandFesto
SGD282.97
Each
units
- Double - 90° 8bar 8 bar - - Not Cushioned - 1882g DFPD Compact
RS Stock No. 125-9926
Mfr. Part No.ERMO-12-ST-E
BrandFesto
SGD1,725.87
Each
units
- Single 12mm 1.8° - - - 500 (Axial) N, 500 (Radial) N Not Cushioned M12 475g - Standard
RS Stock No. 125-9919
Mfr. Part No.DRVS-6-180-P
BrandFesto
SGD194.79
Each
units
- Single 6mm 180° - 8 bar 8bar 25 (Axial) N, 30 (Radial) N Elastic M3 38g - Standard