The design for a camera required a small actuator capable of reliable high-speed shutter operation. The customer also required rigid cost and timeline targets.  Ledex^® design and modeling capability, and experience in manufacturing small solenoids proved to be the perfect match.

Ledex solenoids are ideal for many high speed imaging applications, such as opening and closing a camera shutter. With energizing times as low as 3-5 msec, Ledex solenoid products are among the fastest actuators on the market. Our engineering expertise and manufacturing capability also provide comparably fast track lead times for successful customer project completion.

Continuous duty applications demand robust and reliable components.  Battery powered instruments and devices require energy efficient, and often low noise, operation.  Saia® UCB Rotary Stepper Motors from Johnson Electric deliver on all accounts.

UCB Rotary Stepper Motors deliver 30,000 hours of continuous use, with 3, 6, 12 or 24vversions ideal for battery powered applications, and that deliver quieter operation than comparable PMDC-type motors.  These rotary stepper motors can be driven by a wide frequency range, from as low as 10 Hz up to 550 Hz, to effectively handle a wide range of application needs.  UCB steppers can even be stalled without any damage to the rotor assembly, and what’s more, they will never overheat or burn up.

UCB Rotary Stepper Motors feature a compact 28mm x 24mm footprint, provide 1.3 – 2.3 cNm holding torque and are available with bipolar or unipolar winding configurations.  They can be mounted in any position, and can be combined with a Saia gearbox to maximize output torque and reduce motor RPM.

The customer had an application in which there was a need to open the door to vent large industrial ovens, but was unable to use a motor as the door must be able to be closed manually.  The Size 150 Tubular Solenoid was selected, as it can be pushed back to the starting position in a manual override situation, with no resulting damage.

The Size 150 Tubular Solenoid, for long stroke, high force applications, is among the most powerful Tubular Solenoids offered by Ledex Products.  The maximum torque at low duty cycles surpasses 20 pounds and can operate at strokes as long as 1 inch.

• See full line of Tubular Solenoids from Ledex

Johnson Electric introduces Ledex® B12 Series Box Frame Solenoids.  At just 2.0 in (50.8 mm) x 1.25 in (31.75 mm) the B12 are the company’s most compact linear open frame solenoids available to date.  They are specifically engineered to fit where space is at a premium and to provide fast actuation times and high performance in applications where battery powered operation may be required.  Pull versions are standard; push versions are also available.

B12 Series box frame solenoids weigh just 0.3 oz. (8.5 g), provide dielectric strength of 500 VRMS for one second with holding force of 7.7 oz. (2.1 N) at 20°C, and provide 100% continuous duty cycle operation at 20°C ambient temperature.  A magnetically latching version will be launched later in 2010.

Johnson Electric, 801 Scholz Drive, PO Box 427, Vandalia, OH 45377-0427; 937.454.2345; fax: 937.898.8624; www.ledex.com.

Ledex introduces MagShift® Solenoids.  This highly flexible solenoid family eliminates impact among its moving parts and therefore provides extremely quiet operation – power on noise levels measure less than 40 dBA.

• Download the MagShift® Solenoid Product Spec Sheet