Automatic Infusion Pump And Iv Hanging On Pole In Hospital; linear and rotary solenoid applications

The 5 Best Industry Applications For Linear And Rotary Solenoids

Electromechanical devices (e.g., linear and rotary solenoids) play a tremendous role in manufacturing processes and thousands of consumer products which make our lives easier and more productive.

Both linear and rotary solenoids operate by converting an electrical signal into a magnetic field, which is then translated into linear or rotary motion.

When the ferromagnetic actuator, or “plunger,” slides “IN” and “OUT,” this robotic motion is harnessed to either continuously hold a position or to operate as an ON-OFF pulse (latching).

Through Johnson Electric’s innovative engineering and design, linear and rotary solenoids can operate in all environmental conditions at extremely high speeds, with an operating life of up to fifty million cycles, and torque ranges that are sensitive enough for medical diagnostic equipment and powerful enough to control industrial automation.

5 Ways Linear and Rotary Solenoids Change Our Lives

1. Food and Beverage Processing

Solenoid operated linear, and rotary valves are an integral part of the high-speed processing of foods and beverages from “field to fork.”

Food and beverage process equipment requires robust components that can work non-stop at high speeds. When a product needs to be released or diverted, it is a linear or rotary solenoid that controls these fast-paced movements.

Johnson Electric solenoids can provide up to 30 pounds of force even though they are very compact (only about 2 inches long) — making them useful in canneries and bulk packaging plants. When machinery is coupled with proportional solenoid valves for flow control, entire systems become automated and able to release raw ingredients continuously or infrequently for precise recipe control.

Both linear and rotary solenoid valves are mounted on food processing equipment used for bottle capping, conveyors, high-speed sorting and within many domestic products such as blenders, juicers, and food processors.

Other places you will find linear and rotary solenoids within the food and beverage industry include:

  • Document Processing
  • Folding and Wrapping
  • Video Inspection

2. Thermal Imaging Applications

When fast and reliable shutter action is required for thermal imaging, you will find the DC rotary solenoid is a high performer within this industry sector. Thermal imaging uses heat to monitor and detect anomalies during production runs. What was once a cost-prohibitive technology used primarily for military applications is now in wide-spread use due to DC rotary solenoid applications. Thermography eliminates the need for product contact and can be used to inspect circuit boards, switchgear, pumps, and medical devices for quality control.

When a DC rotary solenoid is paired with optical shutters for medical device instrumentation or thermal and infrared camera systems, a rotary mechanism rotates the shutter each time the solenoid is energized with a pulse. The shutter remains latched until the opposite polarity pulse returns the shutter to starting position — all while maintaining extremely high focal uniformity.

Other imaging applications include:

  • Consumer Digital Cameras
  • Non-Destructive Testing
  • Aerial Photography
  • Automotive Quality Control

3. Advanced Security Applications

ATM money compartment security, currency counters, hotel room, and prison door locks, and pharmaceutical storage are all made more secure with high-speed, short-stroke rotary solenoids. DC rotary solenoids are configured within the machine’s design to latch in position at certain stages. Vault doors and cash registers are made safe with fail-secure locking mechanisms that use solenoids to remain locked when power is lost or unlock when de-energized (fail-safe).

Rotary solenoids that operate in fail-secure mode provide high security within many industries. These devices make it impossible to disable the lock by disrupting the power supply. Today’s magnetic locking devices feature extremely strong holding forces which makes them perfect for commercial locking applications or to hold doors open during a fire incident. You will find these devices mounted within many security systems:

  • Vending Machines
  • Coin Changers
  • Money Validation/Stacking

4. Mail Rooms and Fulfillment Centers

Batch processing and continuous conveying are two systems that are capable of handling large amounts of moving material, without interruption. Batch controllers use linear solenoid valves for equipment that may be powered with electricity, pneumatics (compressed air), or hydraulics (the flow of oil).

You can count on a linear or rotary solenoid valve to be an integral part of this equipment to produce the rotational motion or linear movement to operate these valves. As part of an automated conveyor system, solenoid valves can sense an electrical impulse and respond with proportional control of motion.

Within a mail room or fulfillment center, linear and rotary solenoids are used as Diverter Gates to sort by zip code and to automate the movement of trays or conveyor bins. Replacing these manual functions with automated controls is what drives our thriving e-commerce markets.

Other fulfillment center uses for these valves include:

  • Stamping and metering
  • Parcel sorting
  • Automatic labeling

5. Medical Device Production

Rotary and linear solenoids are also very important in the medical field, especially when equipment must be precise and accurate. Medical devices use finely tuned instrumentation to measure production processes and test the final product.

Also, devices that administer fluids intravenously to patients must have a high level of flow control accuracy. It is with a linear Soft Shift solenoid that mechanisms can be positioned precisely to pinch tubes and regulate flow.

Portable oxygen systems and many other medical devices which use solenoid valves for flow regulation are now integrated with microelectronics to make them more intelligent. They provide a simple electronic solution that is also clean, quiet, and precise.

Other medical applications include:

  • IV Fluid analysis and metering
  • Instrument sterilization
  • Surgical Lasers

We are leaders in solenoid solutions that are innovative and fit a broad range of commercial and industrial applications.  More than 60 years ago, Johnson Electric invented the first rotary solenoid and pioneered the development of these electromagnetic devices to fit the most challenging applications and environments.

When you choose from Johnson Electric’s wide array of the linear and rotary solenoids, you choose components with an exceptional force/torque, are compact, and deliver uncompromising reliability. Contact us for a truly automated, industrial experience.


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