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Unknown component

William Howell

Apr 28, 2018
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Hello everyone, I just got my hands on a new component, and I have no idea what it is or does. A friend of mine gave it to me, and I've tried everything to look it up, and I can't find anything on it anywhere. I even tried doing a Google image search for it.

All I know is that it is manufactured by Leden Inc in Vandalia Ohio. The code identification number is 01840. Hopefully someone can help me. Thank you.
 

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hevans1944

Hop - AC8NS
Jun 21, 2012
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The company name is Ledex, NOT Leden. They are a world-famous manufacturer of solenoids, located in Vandalia, OH, a northern suburb of Dayton near Dayton International Airport. I used to live in Dayton and once interviewed for a job at Ledex.

Yours is missing the solenoid actuator, a ferromagnetic rod that is inserted in the core. When current is applied, the actuator retracts into the core. More information can be found in this PDF file.

Ledex also manufactures rotary solenoids. A rotary solenoid uses a spring-loaded disk that rotates about a shaft that is capable of a limited axial movement. The disk is equipped with ball bearings (usually three) inserted in recessed ramps located on the periphery of the disk. When the solenoid winding is energized, the disk is attracted to it but, because of the ramps, the disk also rotates through a limited arc as it moves axially towards the solenoid coil. The disk is spring-loaded on the shaft, so when the solenoid winding is de-energized the disk pops up and rotates back to its initial position. Rotary solenoids are very useful because considerable torque over a limited rotational distance can be achieved.
 

davenn

Moderator
Sep 5, 2009
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Yours is missing the solenoid actuator, a ferromagnetic rod that is inserted in the core. When current is applied, the actuator retracts into the core. More information can be found in this PDF file.

Nice, haven't seen one of them before
 

Externet

Aug 24, 2009
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Seen those as fuel shut-off in carburetors for small engines/mowers/karts/scooters...
 

William Howell

Apr 28, 2018
2
Joined
Apr 28, 2018
Messages
2
The company name is Ledex, NOT Leden. They are a world-famous manufacturer of solenoids, located in Vandalia, OH, a northern suburb of Dayton near Dayton International Airport. I used to live in Dayton and once interviewed for a job at Ledex.

Yours is missing the solenoid actuator, a ferromagnetic rod that is inserted in the core. When current is applied, the actuator retracts into the core. More information can be found in this PDF file.

Ledex also manufactures rotary solenoids. A rotary solenoid uses a spring-loaded disk that rotates about a shaft that is capable of a limited axial movement. The disk is equipped with ball bearings (usually three) inserted in recessed ramps located on the periphery of the disk. When the solenoid winding is energized, the disk is attracted to it but, because of the ramps, the disk also rotates through a limited arc as it moves axially towards the solenoid coil. The disk is spring-loaded on the shaft, so when the solenoid winding is de-energized the disk pops up and rotates back to its initial position. Rotary solenoids are very useful because considerable torque over a limited rotational distance can be achieved.
Thank you so much. I really appreciate it
 
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