AS 2529 Small round electric permanent holding electromagnet featured power on to release and power off to hold.

What is a small round electric holding electromagnet

small round electric holding electromagnet is a permanent holding electromagnet built in a small magnet inside. It features power on to release and power off to hold during operation.

product details

Product Description

Brand	Dr. Solenoid	Model Number	AS 2529
Rated Voltage (V)	DC 12V or 24V	Rated Power(W)	14-18 W
Work Model	Holding Suction	Attraction Force	200 GF
Stroke(mm)	Customized	Reset Time(s)	1 S
Service Life	500 Thousand Times	Certification	CE,ROHS,ISO9001,
Material	Carbon Steel House with Zinc Coating	Lead Wire Length(mm)	200
Install Style	screw	Tolerance of Dimension	+/- 0.1 MM
Water-proof	yes	Insulation Class	F 155 Degree
Hi-Pot Test	AC 600V 50/60Hz 2s	Resistance	89 ohm
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

Part 1 : the Structure of small round electric holding electromagnet

·Appearance: round, this shape design enables it to better fit the surface of the adsorbed object in certain application scenarios, such as adsorbing round metal parts, etc.

·Part 2 : Dimension ,

The size is small and compact design, which is convenient for installation and use in equipment or devices with limited space.

Part 3 : Working principle

3.1 Basic electromagnetic principle

When current passes through the solenoid coil of the electromagnet, a magnetic field is generated, which magnetizes the iron core and generates suction. The suction cup usually has an iron core and a coil inside. When the coil is energized, the iron core is magnetized, generates a magnetic field, and adsorbs the object.

3.2 Reverse magnetic field generation

By changing the direction of the current in the electromagnet solenoid coil, a magnetic field opposite to the original direction is generated. When the reverse current passes, the newly generated reverse magnetic field is opposite to the direction of the magnetic field during the previous adsorption, which affects the magnetization state of the adsorbed object.

3.3 Demagnetization process

Under the action of the reverse magnetic field, the magnetic domain structure originally formed by magnetization inside the adsorbed object is disturbed and destroyed. The arrangement of the magnetic domains gradually becomes disordered, causing the overall magnetism of the object to weaken or disappear, thereby weakening or disappearing the adsorption force and achieving demagnetization.

3.4 Specific implementation method

Current decreasing demagnetization: Demagnetization is achieved by gradually reducing the current of the electromagnet. When the current begins to decrease, the strength of the magnetic field will also weaken accordingly, and the purpose of demagnetization will eventually be achieved.

Reverse current demagnetization: directly change the direction of current flow to the electromagnet, so that it produces a reverse magnetic field, which offsets or destroys the original magnetization state. The magnetic material gradually loses or weakens its magnetization, and the adsorption force will also weaken or disappear.

Part 4 ： Application of reverse suction cup electromagnet or electric permanent holding electromagnet

4.1 Industrial automation field

Material handling and transmission: In automated production lines, it is used to transport metal parts, such as engine blocks and transmission parts in automobile manufacturing. Reverse suction cup electromagnets can quickly and accurately absorb and release these parts to achieve automated loading and unloading operations. Compared with traditional mechanical fixtures, it can more flexibly adapt to parts of different shapes and sizes, improving production efficiency.

4.2 Part positioning and assembly: In the assembly process of precision instruments and electronic products, reverse suction cup electromagnets can accurately absorb tiny electronic components such as chips, resistors, capacitors, etc. By controlling the direction and strength of the magnetic field, these components are ensured to be in precise positions during welding or assembly, improving product quality and assembly accuracy.

4.3 Sorting system: In the sorting system of the logistics and warehousing industry, reverse suction cup electromagnets can be sorted according to the magnetic characteristics of items. For example, for some packages or products containing ferromagnetic materials, they can be quickly sorted into different areas through the adsorption and release of electromagnets, achieving efficient automated sorting.

4.4 Robotics

Robot end effector: As the hand device of the robot, the reverse suction cup electromagnet can enable the robot to have the ability to grasp various ferromagnetic objects. The robot can flexibly grasp and release objects by controlling the current direction and size of the electromagnet according to the task requirements. This application has a wide range of uses in many fields such as industrial robots and service robots, such as handling metal scraps in hazardous environments and delivering metal cutlery in restaurant services.

4.5 Electronic equipment manufacturing field

Circuit board assembly: In the production process of circuit boards, various electronic components need to be accurately mounted on the circuit board. The reverse suction cup electromagnet can be used to absorb tiny components, place them accurately in the specified position of the circuit board, and keep the components stable before welding is completed. This helps to improve the speed and quality of circuit board assembly and reduce the defective rate caused by component displacement.

4.6 Electronic equipment housing assembly: For some electronic devices with metal housings, such as laptops, mobile phones, etc., the reverse suction cup electromagnet can be used in the housing assembly process. It can absorb the housing components, facilitate operations such as screw fixing or snap connection, and ensure the tightness and precision of the housing assembly.

4.7 Transportation field

Automobile maintenance and manufacturing: In the process of automobile manufacturing, reverse suction cup electromagnets are used for the installation and adjustment of body parts. In automobile maintenance, it can be used to adsorb and remove automobile parts, such as doors, hoods, etc. This method is more convenient and faster than traditional hand tools, and will not cause additional damage to parts.

4.8 Railway transportation equipment maintenance: In the repair and maintenance of rail transportation vehicles such as trains and subways, reverse suction cup electromagnets can be used to remove and install large metal parts, such as car side panels, brake devices, etc. Its strong adsorption force and flexible control method help improve maintenance efficiency and safety.

4.9 Construction and building materials field

Building material handling: On construction sites, reverse suction cup electromagnets can be used to transport various metal materials for construction, such as steel, prefabricated metal components, etc. It can quickly adsorb these materials, lift them to designated locations, and improve the efficiency of construction.

4.10 Glass curtain wall installation: During the installation of glass curtain walls, reverse suction cup electromagnets can adsorb glass and metal frames. By precisely controlling adsorption and release, the safety and accuracy of glass during installation are ensured, and the splicing and fixing of metal frames are also facilitated.

4.11 Medical equipment field

Medical equipment positioning and operation: In some minimally invasive surgical instruments, reverse suction cup electromagnets can be used to absorb and fix surgical instruments or tissues. For example, in laparoscopic surgery, it can absorb surgical instruments so that doctors can operate more accurately; or in some dental surgeries, it can be used to absorb small metal instruments for doctors to use more conveniently.

4.12 Medical equipment manufacturing: In the manufacturing process of medical equipment, such as large equipment such as X-ray machines and CT scanners, reverse suction cup electromagnets can be used to assemble metal parts to ensure the precise position of parts and improve the manufacturing quality of equipment.

Part Five ： How to choose a reverse suction cup electromagnet

The following aspects need to be considered when choosing a reverse suction cup electromagnet:

1. Suction requirements

Weight and size of the adsorbed object: clarify the maximum weight and size range of the object to be adsorbed. If you want to adsorb heavier and larger objects, you need to choose an electromagnet with strong suction; for small and light objects, you can choose a product with relatively small suction. For example, in an automobile manufacturing workshop, a large engine cylinder block needs an electromagnet with strong suction, while adsorbing small electronic components does not require such high suction.

Uniformity of suction: If the adsorbed object has high requirements for uniformity of adsorption, such as precision electronic components or thin metal sheets with easily deformed surfaces, you need to choose an electromagnet with uniform magnetic field distribution. You can check the product manual or consult the manufacturer to understand the magnetic field distribution of the electromagnet. Usually, the uniformity of the magnetic field can be determined by means such as finite element analysis.

2. Working environment

Temperature range: Consider the temperature range of the working environment of the electromagnet. If it works in a high temperature environment, such as a metal processing area near a furnace, you need to choose a high temperature resistant electromagnet, and its coils and cores and other components should be made of materials that can maintain stable performance at high temperatures. On the contrary, in a low-temperature environment, it is necessary to ensure that the material of the electromagnet does not become brittle or lose its magnetism due to low temperature, such as the application of some special low-temperature enameled wires and magnetic materials.

Humidity and corrosiveness: In a humid or corrosive gas environment (such as the seaside or chemical workshop), the shell and internal parts of the electromagnet need to have good anti-corrosion measures. The shell can be made of stainless steel, and the internal coil can be wrapped with waterproof and anti-corrosion insulating materials, such as epoxy resin coatings with chemical corrosion resistance.

Dust and foreign matter: If there is a lot of dust or foreign matter in the working environment, it may affect the adsorption performance of the electromagnet or cause its failure. At this time, it is important to choose an electromagnet with good sealing or a product with a protective device to prevent dust from entering the inside of the electromagnet and affecting its normal operation.

3. Power supply requirements

Power supply type matching: Determine the type of power supply that can be provided in the actual application, whether it is DC power supply or AC power supply, and then select an electromagnet that matches it. There are some differences in the working principle and performance of DC electromagnets and AC electromagnets. Generally speaking, DC electromagnets have more stable suction and higher control accuracy; AC electromagnets have relatively simple structures and lower costs.

Voltage and current specifications: Carefully check the rated voltage and rated current of the electromagnet to ensure that they match the voltage and current parameters of the existing power supply system. If the voltage or current does not match, the electromagnet may not work properly or even be damaged. At the same time, it is also necessary to consider whether the power of the power supply is sufficient to meet the needs of the electromagnet during operation.

4. Response speed

Adsorption and demagnetization speed requirements: Choose according to the requirements of the application scenario for adsorption and demagnetization speed. If it is on a high-speed automated production line, the electromagnet needs to be able to quickly adsorb and release objects, then you should choose a product with a fast response speed. Generally speaking, the response speed of a DC electromagnet is relatively fast because its magnetic field is established and disappears quickly. You can check the technical parameters of the product to understand its adsorption and demagnetization time.

5. Size and installation method

Installation space limitations: Consider the installation location and space size of the electromagnet. If the installation space is limited, you need to choose a small round electromagnet of the right size. At the same time, pay attention to whether the shape of the electromagnet matches the shape of the installation location. For example, some installation locations may require a flat electromagnet.

Installation method convenience: There are many ways to install the electromagnet, such as bolt fixing, magnetic fixation, embedded installation, etc. Choose a method that is easy to install and disassemble, which will be more convenient when maintaining the equipment or replacing the electromagnet. For example, the magnetic fixation method does not require complex tools, and only requires the electromagnet to be adsorbed on the ferromagnetic mounting surface.

6. Control method and accuracy

Control method compatibility: Consider the compatibility of the electromagnet with the existing control system. If precise control is required through devices such as computers or PLCs (programmable logic controllers), it is necessary to select an electromagnet with a corresponding control interface (such as a digital interface or an analog interface) so that parameters such as the direction, size, and on-off time of the current can be easily controlled.

Control accuracy requirements: For some applications that require high precision in adsorption force, such as precision instrument manufacturing, it is necessary to select an electromagnet with high control accuracy. This may involve the design of the electromagnet itself, such as using high-precision coil winding technology and high-quality magnetic materials to ensure that the size of the suction force and the direction of the magnetic field can be accurately controlled.

7. Reliability and lifespan

Brand and quality reputation: Choose electromagnets with well-known brands and guaranteed quality. Well-known brands usually have more stringent quality control systems, and their products are more guaranteed in terms of reliability and stability. You can check the user reviews, industry certifications and other information of the product to evaluate the brand's quality reputation.

Life expectancy: Choose the electromagnet based on the frequency of use and expected service life of the application. Some high-quality electromagnets can have a long service life under normal use conditions, but this is also closely related to proper use and maintenance. You can ask the manufacturer about the electromagnet's service life test data and maintenance recommendations to extend its service life during use.

Product detail diagram

Model No	Dimension	Install Thread	Holding Force	Power	Min thickness of counter plate	Weight
AS-1010	Ø10*10	M2_6	5N	3.0W	1mm	6g
AS-1212	Ø12*12	M3_6	10N	6.0W	1mm	8g
AS-1419	Ø14*19	M3_9	30N	10W	2mm	12g
AS-1512	Ø15*12	M2_7	30N	13W	2mm	12g
AS-1515	Ø15*15	M4_8	20N	3.6	2mm	15g
AS-2023	Ø20*23	M3_5	30N	6.0W	2.5mm	37g
AS-2025	Ø20*25	M4_7	50N	4.0W	2.5mm	43g
AS-2520	Ø25*20	M4_4	60N	4.5W	3mm	75g
As-2521	Ø25*21	M4_11	120N	7.5W	3mm	78g
AS-2522	Ø25*22	M4_12	100N	7.3W	3mm	80g
AS-2529	Ø25*29	M4_14	120N	7.0W	3mm	90g
AS-2821	Ø28*21	M4_14	150N	8.0W	3mm	95g
AS-3025	Ø30*25	M4_14	200N	14.4W	3mm	104g
AS-3229	Ø32*29	M5_19	180N	14.8W	3mm	168g
AS-3333	Ø33*33	M4_14	250N	5.5W	3mm	170g
AS-3425	Ø34*25	M5_16	300N	15W	3mm	160g
AS-3529	Ø35*29	M5_19	300N	28W	3.5mm	168g
AS-4025	Ø40*25	M6_18	200N	10.5W	3mm	185g
AS-4029	Ø40*29	M6_18	400N	16W	4mm	223g
AS-5029	Ø50*29	M8_19	500N	9.6W	5mm	320g
AS-6329	Ø63*29	M8_18	960N	33W	6mm	520g
AS-7045	Ø70*45	M8_26	1200N	17.5W	8mm	900g
AS-8245	Ø82*45	M8_25	1950N	43W	10mm	1400g
AS-15063	Ø150*63	M16_16	3500N	60W	15mm	6500g

Q: Are you a trading company or a solenoid manufacturer? And where is your factory location?
A: We are a professional solenoid and solenoid valve manufacturer. Our factory is located in Dongguan City, 2 hours from Hong Kong Airport by car.

Q: What kind of the service does your company offer ？

A：We are a professional solenoid and solenoid valves solution manfaucturers since 2007, our factory have metal stamping workshop, mould and dia workship under same room, CNC workshop, Testing laboratory, R & D team and assembling production line, we can offer you the one stop service from drawing design, working sample, moulding and validation , assembling and exporting service.

Q: How to choose a suitable electromagnet for your project?
A: Please let us the electromagnet parameter you need :

DC voltage(DC/AC) source, current, resistance,

Act form: when the energized to hold or the energized to release?
Holding force(Kg/N)?
Shape dimension (circular or rectangular),
Dimension limited (diameter and height).
Duty working cycle,
Electronic wire length and connector,
Waterproof? Yes/No need
Residual force(Kg/N)?
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For example: You can say I want purchase electromagnet as below:
  Circular Permanent Electromagnet,
Action Form: Energized to release
Force: 40Kg/400N
Size:     Ø40 x H29
Voltage:       DC 12V
Power:        16 W
Duty Cycle: 10%(For each cycle: Max. Energized time 3s, de-energize

time 60s)
Lead Wire: Bottom edge out 25cm with XH2.54 male connector.
Waterproof: Yes.
Install Thread size: M6
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Q: How long is your delivery time?
A: Samples ready for delivery within 5 days if the goods are in stock, or in 10-15 days for customized product. It is according to quantity and the product we have tooling or not. Normally, you will get our samples in 7-10 days after payment.