Johnson Electric’s extensive platform of tubular solenoids provides high force for short stroke applications and is ideal for applications that require long life and high reliability. The STA technology is constructed with a low friction system bobbin which ensures life of 25 million actuations. The customizable STA platform is available in a variety of sizes in both push and pull engagement which is well suited for lock/latch operations. The STA Series provides high resistance to shock and vibration to withstand extreme ambient conditions and is also available in magnetic latching versions.

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Johnson Electric’s SoftShift linear solenoids provide slow, smooth position control or high speed snap action operation. SoftShift solenoids have a unique construction which allows easy transition from snap action to variable positioning. Using the same power, starting force is three to five times higher than standard solenoids at the fully de-energized position. This is advantageous for starting inertial loads or detent mechanisms, and for conserving electrical power. This solenoid offers quiet operation, high power density, and a variety of sizes. Custom engineered solutions ensure that exact application requirements are met. With life of 10 million cycles, the SoftShift platform is ideal for applications requiring closed loop velocity and position control.

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Johnson Electric’s Low Profile Linear DC Solenoids offer extremely compact design which optimizes the magnetic flux path for maximum force versus stroke characteristics. The construction of the plunger assembly provides an auxiliary flux path which permits a significant increase in force. The reliability and high performance of the low profile design make it an ideal choice for applications in which consistent, reliable operation is critical. Long life operation with very high force in a small package make the Low Profile Linear DC Solenoid technology idea for a variety of applications including pumps, packaging equipment, and instrumentation & testing equipment.

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Johnson Electric’s Ultimag® rotary actuator technology offers a bidirectional, center return function not found in traditional rotary solenoids. The Ultimag platform is substantially faster than other solenoids, and can be operated in an on/off mode or proportionally, in both open and closed loop systems. Ultimag actuators offer a 45° stroke; however, the design is capable of a maximum stroke of 160°. For shorter strokes, electronic or mechanical stops can be used. This technology is ideal for applications requiring high speed and high torque motion control often found in industrial, business technology and medical applications.

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Johnson Electric’s BTA actuator platform offers high speed controllability in rotary stroke applications. The BTA has a single phase coil with three stator poles and matching rotor pole. When the coil is energized, the poles align along the flux path. The three pole design allows a stroke of up to 45°. Since BTA technology does not require full stroke actuation, stops can be used to attain maximum life as well as optimum stroke / torque capacity.

Using simple pulse width modulation to control coil current, the BTA allows open or closed loop velocity and maximum position control. The BTA platform offers quiet operation due to the soft, shock-free cycling which eliminates the noise associated with end-of stroke mechanical stops. Very quiet operation, long life in excess of 100 million actuations and high power density make the BTA product family ideal for high speed, high throughput diverting and sorting applications that require low noise and zero downtime.

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Johnson Electric is the world leader in Rotary Solenoid technology. Rotary solenoids are electromechanical devices that convert linear motion to rotary motion by virtue of three ball bearings that travel down inclined raceways. When the coil is energized, the armature assembly is pulled towards the stator and rotated through an arc determined by the coining of the raceways. These extremely high speed actuation devices provide very long life operation for the most challenging applications. With operating life up to fifty million cycles, a wide variety of sizes and custom engineering for life, speed, environmental conditions and torque requirements, the Rotary DC solenoid is ideal for a variety of markets and applications including door lock, vending machines, industrial automation and medical diagnostic equipment.

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Marketed under the Ledex Brand, Johnson Electric offers a diverse range of rotary and linear solenoids.

These industry leading products include our high speed, short stroke rotary solenoids such as the BTA and Ultimag series and our long life, medium stroke linear solenoids including open frame, tubular and low profile product families. From very large rotary solenoids found in material handling to our smallest open frame linear solenoids used in precision diagnostic equipment, we offer long life, quiet operation, battery operation and magnetic latching solutions. Our broad portfolio of product technologies is custom engineered to meet the requirements of each application.

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