MIL-S-4040G
Rated stroke - The linear or angular (as applicable) travel of the armature from the deenergized position to the energized position.
Compensated actuating voltage - The voltage that will provide at 25°C ±2°C stabilized solenoid temperature a force equivalent to that produced at maximum rated temperature and minimum rated voltage.
Rated force - The force in pounds a solenoid will produce at the rated stroke and minimum voltage over a specified temperature range in accordance with the characteristic curve submitted by the manufacturer.
Rated torque - The torque in inch-pounds a solenoid will produce at a rated stroke and minimum voltage over a specified temperature range in accordance with the characteristic curve submitted by the manufacturer.
Return force - The spring force in pounds available to move the solenoid armature and load to their deenergized position.
Return torque - The torque in inch-pounds available to return the armature from its energized position.
Net starting torque - The static torque produced by the solenoid within 0 percent to 5 percent of rated stroke when rated voltage is applied.
Duty cycle - The duty cycle is the ratio of the "on" time to the total time.
Example:
Duty cycle = Time on X 100 %
Time on + time off
Continuous duty solenoid - A solenoid that is capable of continuous operation without damage, overheating, or malfunction when operated, with rated voltage applied, for one hour or more at a specified ambient temperature.
Intermittent duty solenoid - A solenoid that is capable of operating at the specified duty cycle without damage or malfunction with energized periods less than one-half hour.
Direction of rotation (rotary solenoids) - Rotation is defined as clockwise when, facing the armature or power take-off end of a solenoid, the armature moves in a clockwise direction when the solenoid is energized. When a solenoid is energized and the armature moves in a counterclockwise direction, the rotation is defined as counterclockwise.
6.7 Subject term (key word) listing.
Axial stroke type
Pull type
Push type
Rotary stroke type
6.8 Environmentally preferable material Environmentally preferable materials should be used to the maximum extent possible to meet the requirements of this specification. As of the dating of this document, the U.S. Environmentally Protection Agency (EPA) is focusing efforts on reducing 31 priority chemicals. The list of chemicals and additional information is available on their website at https://www.epa.gov/osw/hazard/wastemin/priority.htm. Included in the list of 31 priority chemicals are cadmium, lead, and mercury. Use of the materials on the list should be minimized or eliminated unless needed to meet the requirements specified herein (see section 3).
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