Electro Mechanisms, Inc.
515 West Allen Avenue #15, San Dimas California 91773-1469
Phone: 909-394-9953 Fax: 909-394-0782
Email: info@electromechanisms.com



An electromechanical device that converts electrical energy into mechanical work


The magnetic moving shaft in a linear solenoid typically made from C12L14 Ledloy steel.


The pull or push energy created by the solenoid when the coil is energized. Note: All our solenoid force/stroke curve graphs are for push or pull at 20° C ambient temperature.


The distance the plunger must travel from its starting position to its stopped position (contacting the core/plug). It is good to minimize stroke to allow the most efficient use of the solenoid’s delivered energy, and to reduce plunger wear.

Duty Cycle

Percentage of time a solenoid is energized during one complete operating cycle.

Duty Cycle % = [(ON time) / (ON time + OFF time)] x 100.

Continuous Duty

Energizing solenoid that has a 100% duty cycle. A solenoid rated for 100% duty cycle may be energized at its rated voltage continuously, because its total coil temperature will not exceed maximum allowable ratings (105°C at and ambient of 25° C).

Intermittent Duty

Energizing solenoid that has less than 100% duty cycle. Note that all intermittent duty cycle coils have an associated maximum allowable "on" time, which must not be exceeded. Intermittent duty coils provide considerably higher forces than continuous duty solenoids for a given model.


Energizing solenoid at a pulse rate about 6%-10% duty cycle. A Intermittent duty cycle that is energized for very short time.

Residual Magnetism

Any remaining magnetic force after the coil has been de-energized.

Maximum Allowable Coil Temperature

The maximum allowable temperatures are generally determined by the temperature limits of the material used in the coil system insulation material, i.e.:

Class A – 105° C maximum

Class B – 130° C maximum

Class F – 155° C maximum

Class H – 180° C maximum

All open frame solenoids are designed for Class "B" operation. Higher temperature configurations are available upon request.

Ambient Temperature

All forces shown are at 20° ambient. For use at higher ambient temperatures use the chart below to determine force at any given temperature.


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