Rotary Solenoid

Rotary solenoids are devices that produce a uniform magnetic field when an electrical current is applied to them. They consist of a coil of wire, wrapped around a metal core. The metal core is mounted in the centre of a disc. This has grooves on its underside to match up with slots in the body of the solenoid, and ball bearings to enable easier movement. 


Rotary solenoids use the same principle as linear solenoids, but the core in linear solenoids exerts a push-and-pull force rather than a rotational force.  


How do rotary solenoids work?

When an electrical current is applied, the metal core is drawn backwards into the coil. With the help of ball bearings, the disc rotates towards the positive magnetic field, giving the device rotational force. When the current is switched off, a spring on the disc swiftly rotates it back to its original position, also pulling the core out of the coil.


What are rotary solenoids used for?

Rotary solenoids were originally developed for use in defence, but are nowadays often found in industrial machinery such as lasers and shutters, as they're more robust than other types of solenoids.



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Description Price Maximum Rotary Stroke Action Duty Cycle Torque Diameter Length Weight Closed Power Continuous Supply Voltage Coil Resistance Series Wire Size
RS Stock No. 884-3013
Mfr. Part No.H-3084-031
SGD175.92
Each
units
- Rotary Continuous - 40 mm 28.8mm 198.4g - - 56.7Ω 4E Series -
RS Stock No. 173-6484
Mfr. Part No.H-2346-032
SGD303.63
Each
units
25° Rotary - - 28.6 mm 25.83mm 56.7g - - - 2E 32AWG
RS Stock No. 173-6473
Mfr. Part No.194644-029
SGD985.95
Each
units
- Rotary 25% 0.7Nm 49.2 mm 31.75mm 363g 84W 42.1 V dc 21.1Ω - 29AWG
RS Stock No. 173-6480
Mfr. Part No.810-282-330
SGD232.19
Each
units
45° Rotary 25% - 33.3 mm 47.55mm 113.4g 40W 28 V dc 18.4Ω 3B 30AWG
RS Stock No. 173-6472
Mfr. Part No.194644-027
SGD985.95
Each
units
- Rotary 25% 0.7Nm 49.2 mm 31.75mm 363g 84W 26.7 V dc 8.5Ω - 27AWG
RS Stock No. 173-6481
Mfr. Part No.H-15021-028
SGD303.63
Each
units
67-1/2° Rotary 25% - 39.7 mm - - - - - 4E -
RS Stock No. 173-6493
Mfr. Part No.H-2744-032
SGD303.63
Each
units
- Rotary - - 28.6 mm 25.83mm 56.7g - - - - 32AWG
RS Stock No. 883-1760
Mfr. Part No.C5-270-B-1
SGD19.87
Each
units
- - - - - 23.8mm - - - - - -
RS Stock No. 173-6470
Mfr. Part No.195190-032
SGD414.19
Each
units
- Rotary 25% - 30.2 mm - 85g 40W 27.8 V dc 19.26Ω - 32AWG
RS Stock No. 173-6483
Mfr. Part No.H-2168-032
SGD303.63
Each
units
25° Rotary - - 28.6 mm 25.83mm 56.7g - - - 2E 32AWG
RS Stock No. 173-6482
Mfr. Part No.H-15067-027
SGD373.33
Each
units
25° Rotary - - 57.2 mm 47.78mm 510.3g - - - 6S 27AWG
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