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AS 7042 Tubular Push-Pull Solenoid – 24 V / 12 V Linear Actuator

What Is a Micro Push-Pull Solenoid?

A Micro Push-Pull Solenoid is a compact electromagnetic actuator designed to create linear motion through the use of an energized coil. Structurally, it consists of:

  • A copper-wound solenoid coil

  • A central iron armature/plunger

  • A return spring (in many models)

  • A small cylindrical or rectangular housing

When electrical current flows through the solenoid coil, a magnetic field is generated, which pulls the plunger into the coil’s center. Because the plunger has two usable ends, the device can provide either pulling or pushing motion—hence the name push-pull solenoid.


Why “Micro”?

“Micro” indicates that the solenoid is very small—typically designed for applications where space is limited.
For example, the type you described has:

  • Body length around 40 mm

  • A captive plunger (preventing it from falling out)

  • A strong return spring to automatically reset the plunger when power is removed


How It Works (Simple Operation)

  1. Apply DC voltage (e.g., 12V):
    The coil generates magnetic force, pulling the plunger inward.

  2. Remove voltage:
    The return spring pushes the plunger back to its original position.

This makes the operation straightforward and reliable.


Advantages of Micro Push-Pull Solenoids

  • Very compact—easy to fit in tight spaces

  • Dual-action capability (can push or pull)

  • Captive armature—won’t fall out like some low-cost solenoids

  • Integrated return spring—automatic reset without extra mechanisms

  • Convenient mounting tabs for easy installation

    Product Description

    Brand Dr. Solenoid Model Number AS 7024
    Rated Voltage (V) DC12V  or 24V  Rated Power(W) 140W
    Work Mode Push and Pull  Holding Force (N) 15--25N 
    Stroke(mm) 10--17 MM Customized Reset Time(s) 1 S On,3 S OFF
    Service Life 200 Thousand Times Certification CE,ROHS,ISO9001,
    Material Superior Magnet Iron Lead Wire Length(mm) 200 MM
    Install Style Screw Tolerance of Dimension  +/-  0.1 MM
    Water-proof  None Insulation Class B
    Hi-Pot Test AC 600V 50/60Hz 2s Non-excitation Holding Force 0
    Working Temperature -10°C-100°C Duty Cycle 1-100%
    Thread Depth(mm) / Payment Term TT, or LC At Sight
    Sample Order Yes Warranty 1 Year
    MOQ 1000 pcs Supply Ability 5000 pcs per Week
    Delivery Time 30 Days Port of Loading shenzhen

    Product detail diagram

    AS 7042 electric solenoid Push Pull 1AS 7042 electric solenoid Push Pull  2AS 7042 electric solenoid Push Pull  3AS 7042 electric solenoid Push Pull  4AS 7042 electric solenoid Push Pull  5AS 7042 electric solenoid Push Pull  6


    AS 7042 Tubular Push-Pull Solenoid

    A push-pull solenoid operates based on the electromagnetic field generated when current flows through a coil. The magnetic field drives the movable plunger to perform linear motion, producing either a pushing or pulling force depending on the design. Its core principle is derived from the leakage magnetic flux of the helical coil. When the coil is energized, the magnetic field pulls the plunger toward the center of the coil; when power is removed, a spring or external force returns it to the original position.

    In typical designs, the distance between the moving plunger and the fixed iron core is about 50–100 mm. By adjusting the number of coil turns, current level, and magnetic circuit structure, the output force and power can be precisely controlled.

    Key features include:

    Compact structure suitable for installation in limited spaces

    DC operation with rapid startup and low risk of coil burnout

    High operating frequency, often exceeding 3,800 cycles per hour

    Fast response and quick reset, ideal for rapid switching mechanisms

    2. Application Industries of Push-Pull Solenoids

    Push-pull solenoids are widely used across various industrial automation fields due to their reliability, fast response, and long service life. Common industries include:

    Power equipment: actuator mechanisms, switchgear control

    Petrochemical industry: valve control and inspection devices· 

    Machinery and hardware equipment: automatic feeding and locking systems

    Packaging machinery: high-frequency mechanisms in automated processes

    Office and consumer equipment: latches and electromagnetic actuators

    Their ability to perform frequent and rapid operations makes them suitable for both simple mechanisms and complex automated workflows.

    3. Duty Cycle (Operating Rate)

    The duty cycle indicates how frequently a solenoid can be energized within a given period. Common classifications include:

    100% Duty Cycle – Continuous energization

    50% Duty Cycle – Energized 1 second / off 1 second

    25% Duty Cycle – Energized for one-quarter of the operating cycle

    10% Duty Cycle – Short, intermittent energization

    A lower duty cycle allows higher instantaneous force, but prolonged energization at low duty cycles can cause overheating. Therefore, selecting the correct duty cycle is essential to ensure safe and reliable operation.

    4. Summary

    Push-pull solenoids are widely used due to their simple structure, quick actuation, and high reliability. Understanding their working principle, application fields, and duty cycle classifications helps ensure correct selection and optimal performance in industrial applications. For more specific model recommendations or technical guidance, consulting a professional supplier or technical team is recommended.