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WL0735B Push-Pull Latching Solenoid automation Solutions

A Push-Pull Latching Solenoid is one of the most efficient electromechanical actuators that produce linear push and pull motion while keeping the position without any additional electricity. A short electrical impulse is enough to change the position with the use of a permanent magnet or mechanical latching, making this actuator a great solution for energy-efficient applications. Latching solenoids are more efficient in terms of power consumption, and they produce less heat, have a longer service life. They are used in industrial automation, smart locks, vending machines, medical devices, automobile industry, and security systems. Push-Pull Latching Solenoid is available in various voltages, strokes lengths and force levels, and they can be tailored to meet specific requirements of a certain project.

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Push Pull Latching Solenoid Product Overview

A Push Pull Latching Solenoid is an electromechanical actuator that utilizes electricity to deliver linear motions in push and pull directions while being able to maintain its position without continuous electrical power.

Contrary to common solenoids, this mechanism uses a permanent magnet or magnetic latch to keep its position until a new electrical pulse alters its status. Thus, a Push Pull Latching Solenoid significantly reduces power consumption and heat generation. Latching solenoids are used in industrial automation, access control systems, vending machines, medical devices, transportation vehicles, and smart home products.

How Push Pull Latching Solenoid Works?

But how does a Push Pull Latching Solenoid work? The mechanism operates due to the following process. A short electrical impulse starts an electromagnetic field in the coil of the solenoid, which attracts the internal plunger into a push or pull position. Then, the plunger is fixed at its position by a permanent magnet or mechanical latch and does not require continuous electricity to stay in the same position. To get rid of this position, a reverse electrical impulse or a second coil activates the latch and moves the plunger back to its original position.

Push Pull Latching Solenoid Key Features

One of the key features of Push Pull Latching Solenoids is their energy efficiency, since this device works without continuous electrical power with the help of a special latching system, reducing power consumption and heat generation. The other important advantages of this solenoid are fast reaction time, compact size, long service life and strong force of holding. Push Pull Latching Solenoids are available in different voltages, stroke lengths, force values, and can be tailored to the needs of certain industrial applications. Designed to last for a long period of time, this mechanism provides millions of working cycles with minimum maintenance needs. Quiet operation and good positioning ability make this actuator a great solution for automation equipment, medical instruments, smart devices and security systems.

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Push-pull Latching Solenoid Technical Datasheet

Brand	Weilong Technology	Model Number	WL 0735 B
Rated Voltage (V)	DC 12V or DC 24V	Rated Power(W)	9 W
Work Model	Pull Push Type	Holding Force (N)	500 Gf
Stroke(mm)	Customized 3-5 mm	Current	0.75 A
Service Life	100 Thousand Times	Push Pull Force	120 Gf
Material	Carbon Steel Housing	Lead Wire Length(mm)	200
Install Style	mounted screw hole for easy set up	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	500 pcs	Supply Ability	5000 pcs per Week
Delivery Time	40 Days	Port of Loading	shenzhen

Why are push pull latching solenoid getting popular?

Push Pull Latching Solenoid is gaining popularity due to focus on energy efficiency, reliability, and smart automation among the industries. However, latching solenoids do not require continuous power in order to maintain the position, they only require an electrical pulse unlike common solenoids and therefore reduce significantly power consumption and heat generation.

Push pull latching solenoid is ideal for battery-operated devices, intelligent locks, medical devices, industrial automation, vending machines and Internet of Things technologies. The popularity of push pull latching solenoids is also based on their compact design, high service life, low maintenance and compatibility with control systems. Push Pull Latching Solenoids have become a preferred choice for modern OEM products across industries.

Push-pull latching solenoid vs push-pull frame solenoid

There are various designs of linear solenoids to consider when choosing a component for a project. The push-pull (monostable) and latching (bistable) solenoids are two basic types of linear solenoids that differ in structure, principle of operation, and applicability. Choosing the most suitable type of the component is crucial in ensuring efficient performance, power consumption, and saving costs in the application.

Principle of Operation: Spring or Magnet

The key difference is that different mechanisms of returning the plunger to the initial state exist in the solenoids.
The push-pull solenoid, also called the monostable solenoid, contains a spring mechanism which returns the plunger to the initial state when power is turned off. When electrical current is supplied to the coil, a magnetic field is created that attracts the plunger to the inside of the coil. After that, once power is cut, the magnetic field collapses, and the mechanical energy of the spring pushes the plunger back to its initial position. As only one stable state exists in the solenoid (spring loaded), it needs constant current supply to hold the plunger in the actuated state.
The latching solenoid, also referred to as the bistable solenoid, is equipped with a permanent magnet which keeps the plunger in the position. If no current is supplied to the solenoid, then in the de-energized state, the plunger is held by the permanent magnetic force. However, in order to move the plunger to another position, a short pulse of current is used which overcomes the magnetic field. Until the reverse polarity pulse is supplied, the plunger remains in the position because there are two stable positions in the bistable solenoid.

Feature	Push-Pull (Monostable)	Latching (Bistable)
State Maintenance	Requires constant power to hold position	Maintains position with zero power
Power Consumption	High (can generate significant heat)	Low (only consumes power when switching states)
Holding Force	Provided by continuous current	Provided by permanent magnet; force can be high
Speed & Force	Can be very fast (from ~2ms) and robust; offers high force	Generally slower (~10ms) and lower force than push-pull designs

Application Suitability

Choice of one or another solenoid depends on the characteristics of the application.
The push-pull solenoids are best for heavy-duty applications that require high forces for intermittent or continuous operation on/off. Push-pull solenoids are widely used in electronic door locks, valves, robotics, printers and other applications that require powerful and fast movement.
The latching solenoids are perfect for applications with low duty cycles in which the “on” position should be held for a long time without generation of excessive heat and energy consumption. There is no need in power supply in the steady state and thus latching solenoids do not draw any power while being in one of the stable states. The latching solenoids are widely used in battery operated locks, latching valves, office equipment and vending machines.To conclude, the decision on choice of a push-pull solenoid is made on account of necessity of high actuation forces while latching solenoids are chosen due to energy-saving properties.

Push Pull Latching Solenoid Industrial Application

Push Pull Latching Solenoid is applied in different industries due to their energy efficiency and reliable linear motion. They are used in industrial automation for locking mechanisms, sorting systems, robotic actuators, safety interlocks, and production equipment. They are used for access control systems in electronic door locks, cabinet locks, lockers, and security barriers.

The manufacturers of medical equipment use latching solenoids in their products to reduce heat generation and improve the reliability of diagnostic equipment, laboratory analyzers, drug dispensing systems and portable medical devices. They are used in vending machines for dispensing and securing.

In automotive manufacturing industry, Push Pull Latching Solenoids are used in charging ports, electronic latches, fuel systems, seat mechanisms, and transmission controls. Another advantage of the mechanism is low power consumption in smart home products, such as intelligent locks, mailboxes, parcel lockers, and home automation systems.

They are also used for reliable positioning in industrial valves, fluid control systems, textile machines, agricultural equipment, packaging machines, and telecommunication equipment. The fact that they maintain position without continuous electrical power makes them great for battery powered equipment, remote locations, and energy conscious designs.

Push Pull Latching Solenoid advantage and disadvantage

Push Pull Latching Solenoid Advantage

There are many advantages of push pull latching solenoids comparing to other electromechanical actuators. One of the major advantages is energy efficiency . They consume power only during switching, they do not require continuous power to maintain the position. This fact significantly decreases power consumption, minimizes heat generation and increases the lifespan of the equipment. Due to their compact design, quick response, silent operation, and reliable force of holding, push pull latching solenoids are a great solution for battery operated equipment and energy efficient designs. The value for industrial automation and OEM products is added by long life, low maintenance and customization opportunities.

Push Pull Latching Solenoid Disadvantage

Push Pull Latching Solenoid also has their drawbacks. The latching mechanism makes this actuator more complicated and expensive comparing to standard solenoids. Pulse control circuits that can reverse the current or energize dual coils are needed in most cases. Holding force is determined by the permanent magnet or latch design and may be not sufficient in very high load applications. Magnetic interference and mechanical shock may affect the performance if it is not designed correctly. Incorrect force or stroke values may decrease the reliability of operation. In order to get the best performance and longevity of operation, correct installation, engineering and control circuit design is necessary.

Push Pull Latching Solenoid Troublesooting Guide

In case if a Push Pull Latching Solenoid does not operate, you have to check first that the voltage is correct for the solenoid coil voltage. Check if there are no loose, damaged or wrongly wired connectors. Measure the resistance of the coil with the use of a multimeter.

If the plunger does not operate, check the actuator for contamination, corrosion or mechanical blocking. Clean and align the moving parts with the external mechanism. Increased friction and side loads can reduce the operational force dramatically.

If the solenoid does not latch correctly, check the permanent magnet or latching mechanism for wear and damage. Check that the control circuit provides enough duration of impulse current.

Overheating occurs usually due to excessive operation, inappropriate voltage or continuous operation beyond the design parameters. You should verify if operating conditions are within the manufacturer recommendations.

Loose mounting hardware or worn internal components can cause unusual noise or irregular movement. You have to tighten all mounting hardware and replace any damaged components.

Correct environmental protection, regular electrical testing, and preventive maintenance will increase reliability and service life of your solenoid.

8 Popular Questions on Push Pull Latching Solenoid

1. What is a Push Pull Latching Solenoid?

A push pull latching solenoid is an electromechanical actuator that produces linear push or pull motion. It is very energy efficient since it utilizes a permanent magnet or a latching mechanism to keep the plunger in position without continuous electrical power unlike a common solenoid.

2. How does Push Pull Latching Solenoid work?

An electrical impulse energizes the coil and the plunger is moved to a certain position by the electromagnetic field. The power is turned off and the mechanical latch or a permanent magnet keeps the plunger in position. The second coil or impulse returns the plunger to its original position.

3. What are the advantages of a Push Pull Latching Solenoid?

The main advantages are:

Reduced power consumption
No holding current
Lower heat generation
Fast response time
High life expectancy
Precise Positioning
Compact Size
Minimal Maintenance

4. Which industries use Push Pull Latching Solenoids?

These solenoids have a wide range of applications in:

Industrial automation
Intelligent door locks
Candy machines
Medical equipment

– Automotive systems

Security equipment
Self-service terminals
Automation in office

Home appliances

Battery operated equipment

5. How to select the suitable Push Pull Latching Solenoid?

Consider the following aspects:

Required push or pull force

– Stroke length

Operating voltage (6V, 12V, 24V etc.)
Working time
Reaction time
Mounting dimensions
Operating temperature
Environmental conditions
Lifetime requirement
Customization requirement

6. Can push pull latching solenoids be customized?

Yes, they can be.

Yes, the majority of OEM manufacturers offer customization options including:

Coil voltage rating
Stroke length
Holding force
Plunger design
Mounting brackets
Lead wires or connectors
Water resistant protection
Construction material
Duty cycle
Special operating temperature

My Push Pull Latching Solenoid does not operate. Why?

The reasons may include:

Wrong supply voltage
Loose or damaged wiring
Coil failure
Mechanical blocking
Side loading on top
Wrong pulse duration
Worn latch mechanism
Contamination or corrosion within the plunger
Overheating due to improper operation

8. How is a normal solenoid different from a Push Pull Latching Solenoid?

A normal solenoid requires continuous power in order to keep the plunger in the position, consuming more energy and producing more heat. A Push Pull Latching Solenoid requires only a short electrical impulse to change the position and keeps it without continuous power.

How to Select A Push-Pull Latching Solenoid ?

In order to choose the appropriate Push Pull Latching Solenoid, you have to know all the mechanical and electrical specifications of the application. Firstly, you have to calculate the force of the solenoid required for operation and confirm that the solenoid will be able to push or pull enough through its whole stroke. You have to consider the initial force and the force at the end of stroke under real load conditions.

Next, you have to take into account the length of stroke required. An unnecessary long stroke may decrease the force of the solenoid and increase the reaction time. The selection of voltage is also crucial, since commonly used voltages are 6V, 12V, 24V and 48V DC. However, custom voltage is also possible for special applications.

Duty cycle and switching frequency also should be considered. Latching solenoids consume energy during switching but the switching too frequently may negatively affect the coil temperature and lifetime of the product.

The choice of housing material and its protection rating depends on environmental conditions, such as temperature, humidity, dust, vibration, and corrosion.

The dimensions of mechanical mounting should correspond to the available space. You should also think about the type of connectors, how it will be connected electrically, and the compatibility of control electronics. The requirements for the response time may affect the plunger weight and the coil.

It is recommended to purchase the product according to international standards of CE, RoHS and ISO quality systems for safety critical applications. Prior to purchasing, you have to estimate the expertise of supplier in solenoid manufacturing, manufacturing capabilities, customization opportunities, test procedures, and production capacity.

Finally, you have to order prototype samples for the application specific testing. Force measurement, response time, power consumption and durability will confirm the long-term performance. Collaboration with OEM solenoid manufacturers will guarantee that the selected product satisfies both technical and manufacturing requirements, reducing the risks of development and lifecycle costs.