Dimension: 30 * 22 MM

Holding Force : 4.0 KG-150KG

Wire length is about 210mm

Electric lifting magnet.

Powerful and compact.

Smooth and flat surface.

Low consumption and reliable temperature rise

Ambient temperature within 130 degrees.

Electromagnet in working condition would produce a certain amount of heat, electricity more frequently the higher temperature, which is a normal phenomenon.

Feature

1. The adsorbed object must be iron;
2. Select the correct voltage and product model;
3. The contact surface is smooth, flat and clean;
4. The surface of the magnet must be closely attached to the adsorbed object without any gap;
5. The area of the adsorbed object shall be greater than or equal to the maximum diameter of the magnet;
6. The object to be sucked must be close, the middle can't be interspersed with objects or gaps (Contrary to any conditions, suction will be reduced, not the maximum suction.)

Understanding Massager Solenoids: The Heart of  Therapy Devices Introduction

Massage devices have become a staple in fitness recovery in 2025, the massager product can offer deep tissue relief and muscle relaxation. The core of these devices is a crucial component, the massager solenoid. Here, we’ll explore what a massager solenoid is, how it works in massage device, and why it’s essential for effective  massager therapy.

What is a massager solenoid?

A massager solenoid is an electromechanical device that converts electrical energy into linear up and down motion. It included a solenoid coil around a movable metal core (plunger). When an electric current goes through the solenoid coil, it generates a magnetic field that moves the plunger up and down, creating a mechanical force.

In massage device, solenoids are responsible for generating the rapid back-and-forth motion that delivers powerful percussive therapy to muscles.

How Does a Massager Solenoid Work?

Electrical Activation – When the massage device is turned on, an electric current flows through the solenoid’s coil.

Magnetic Field Generation – The current creates a magnetic field, pulling the plunger inward.

Impact & Return – The plunger strikes a mechanism (often a spring-loaded mass), creating a percussive force. A return spring or reverse current then pulls it back.

Rapid Repetition – This cycle repeats hundreds or thousands of times per minute (measured in percussions per minute, or PPM), delivering deep muscle treatment.

Unit Dimension: 36 x 28 x 26 mm / 1.04 x 1.42 x 1.59 inch (L*W*H); Voltage: 6 V;    Force: 2 N; Current: 0/6 A; Stroke : 6 mm 

Principle of Flapper Solenoid: 

A flapper solenoid is made with a copper coil, moving plunger and a special design flap, When the electric current passes through copper coil, the plunger retracts. When the current stops passing, the plunger goes back to the previous position with the help of a spring.
With this simple mechanism, the solenoid controls the motion of the flap that connects to the plunger. The flapper solenoid, therefore, gets to control the operation of any mechanical devices attached to it, such as gear sets or a cam mechanism. 

Features:

DC Voltage： DC 6.0 V 
Stroke： 6 mm Force：
keep force > 2 N  
Work Mode：knocking 
Insulation class： Class B，F..... 
Noise：<60dB @ no load 
Power Wattage:  7.2 W
Rate Current:  0.5 A
Resistance: 20 Ω
Lifespan Service : ≥100,000 times 
Working Cycle: 0.5s On, 2s Off

Flapper Solenoid Application: 

The common application of flapper solenoids are used in the copy machines, printing machines, massager chair and other massager product, cotter joint devices, etc.  

What we have and what we can do for you. 

Our international and domestic DC solenoids include open frame solenoids, flapper solenoids
Sucker solenoid, tubular solenoids and special & valve solenoids. If a standard solenoid does not fit your existing project, contact our sales expert for custom solenoid solution options. Solenoids can be designed to meet your specs and are guaranteed maximum function and cost efficiency. Our R & D capabilities include design, development, sample production and first article approval with full documentation. All of our products are 100% tested before shipment, our company are a ISO 9001-2015 certified and RoHS Compliant also. 

Unit Dimension: Diameter 20, High 22 Mm

Principle of Holding sucker Solenoid

this type of round electromagnets, the attraction is created when the holding sucker solenoid is powered on. When the power supply is off, the part being held is released.  The Diameters of holding sucker solenoid is made between 20 and 150 mm in standard manufacture.

Unit Features: 

Powerful and compact Design 
Housing Material: Good Carbon Steel with Zinc or Nickle coating. Smooth surface and Rohs Compliance
Input Voltage:  DC V 
Peak Force:250N
Holding Force: 185N
Duty-cycle: 50%;
Electric time: Less than 7 minutes;

Electric Lifting Magnet Applications

Electric Lifting Magnets are versatile tools used across various settings, including automation assembly lines, sorting machines, mechanical arms for robot machine, and experimental facilities. It's important to note that factors such as prolonged operation, lower voltage, and unsuitable materials can reduce the magnet's force. For optimal performance and safety, it's advised to utilize the magnet at no more than 80% of its rated lifting capacity as indicated on the nameplate.

Caution of Using this Electromagnets

1. The relative object absorbed must be a good magnetic material
2. The suction surface of the electromagnet must be smooth and clean.
3. The thickness of the object is 5 mm at best.
4. The contact surface of the object must be larger than the adsorption surface of the electromagnet

Working Principle

The operation of a tubular solenoid depends on the principles of electromagnetism. When an electric current is passed through the copper coil wire, it produces a magnetic field around the copper coil wire. By coiling the wire, the magnetic field inside the coil is intensified. Once the copper coil is energized, the magnetic field generated pulls or pushes the plunger forward. The strength of the magnetic field, and thus the force exerted on the plunger, is proportional to the amount of current flowing through the coil. This allows for precise control of the solenoid’s movement, making it ideal for applications that require high precision and reliability. 

Product Features: 

Housing Case :  Carbon steel housing with electroplated coating, high shining and smooth surface, RoHs and Reach compliance. 
Plunger: φ12mm  Carbon steel material
Voltage: DC 24 V 
Stroke:  10  mm (adjustable ) 
Force:  300 Gf
Power: 3.6 W
Current: 1.6 A
Resistance: 50 Ω
Lifespan cycles: ≥200,000 times
Working Cycle: 0.1s On, 1s Of

AS 3864 Tubular solenoids featuring a 1.49 in. diameter have a 2.52 in. long housing The captive plunger or actuator has a diameter of 0.39 in. and a stroke of 0.39.  A glass-filled nylon bearing and the electrodes nickel-plated plungers contribute to the exceptionally long life of these compact solenoids.  Plungers are spring-loaded and have fully rounded tips, making them ideal for being used as miniature latches.
AS 3864 Solenoid coils typically utilize Class “F” 23 to 40 AWG (American Wire Gauge) windings with Class “A” insulation for better protection of the solenoid during longer duty cycles.
These clean, high efficiency, low cost, precise tubular solenoids can be operated at 1/10, 1/4, 1/2, and continuous duty cycles (voltage dependent) and are the ideal choice for Medical dispensing, mixing, vending machines, valve control, farm machinery, disconnects, transmission shifting, toys, fire suppression systems, cabinet locks, latching, door controls, and sorting equipment.  An optional, compact clamp permits easy installation and allows for precise linear positioning of the solenoids.  

Unit Dimension: Diameter 40, High 25 Mm; 

The Holding sucker Solenoid Principle

The principle design of holding sucker solenoid is to maintain electromagnetic attraction when the power on. Once the power is off, the electromagnet will lose its attraction and release the object accordingly. The standard model of this holding sucker solenoid has an outer diameter range from 20mm-150mm.

Unit Feature:

Compact and powerful Design 
Body Material: High Carbon Steel with Zinc coating. Smooth surface and Rohs Compliance, anticorrosion also. 
Power Source:  DC 24 V 
Peak Force: 300N
Holding Force: 200 N
Duty-cycle: 50%;
Electric time: Less than 7 minutes ;

Electric Lifting Magnet Applications

The Electric Lifting Magnet solenoid are wildly applied  to intelligent robots, traditional manipulators for grasping magnetic work pieces, ore sorting machines, and brakes for various rotary mechanisms.

Caution when using the Electric Lifting Magnet solenoid

1.The object should be a well magnetic material.
2. The object surface of the electromagnet should bed smooth.
3. The best thickness of object is better to do with 5 mm..
4. The contacted surface of the object must be bigger or large than the adsorption surface of the electromagnet

We help you make the perfect Electric Lifting Magnet Solenoid 

Our R & D team is professionals in the design and manufacture of solenoid. We are always available to listen to your needs and help you find the most suitable solenoid for your project You can also customize your equipment to make it even more practical and versatile, tailored to your objectives. Contact us for a free quote. 

Dimension: φ49 *100 mm / 1.93 * 3.94 Inches.  Stroke Distance: 13 mm.

Principle of Tubular Solenoid: 

Tubular solenoid is the same like the frames and round steel tubes.  This is based on the movable iron core, 
fixed iron core, electromagnetic coil, etc. inside the electromagnet. When it is plugged in, Finally, a process of pushing or pulling occurs. it is a piston-like movement.

Features:

Tubular Housing: Carbon steel housing enclosure, high shining and smooth surface, Rohs and Reach compliance standard.
Plunger: φ10 mm  Carbon steel material
Voltage: DC24 V 
Stroke:  8 mm (adjustable according to the requirement) 
Force:  3 Kg
Power: 48 W
Current: 1.8 A
Resistance: 13.8 Ω
Lifespan cycles: ≥200,000 strokes
Temperature rise: max 65 degrees . Cel. 
Working Cycle: 1 s On, 3s Of

Custom Design : 

We are able to customize various types of tubular solenoid at, small push-pull solenoid, and push-pull solenoid. If you have relevant push-pull tubular solenoid like AS 4910 drawings or technical requirements, parameter requirements, processing requirements,,  our professional R & D team can make your requirements according to your product application needs. At present, 97% of customers are non-standard customizations, and a small number of customers have conventional products.  As for your project and the design, pls contact us with your specification. 

What is Tubular Solenoid? 

Our tubular solenoids go in two basic types, namely, the pull-type and push-type tubular solenoid. Both are designed to offer the same functional characteristics. While Energized, the plunger is stopped at the end, preventing a collision with the fixed core, smaller impact noise and absence of residual magnetism.

Unit Features: 

Tubular Housing Shell: Stainless steel housing enclosure, high shining and smooth surface, RoHs and Reach compliance. 
Plunger: φ10 mm  Carbon steel material
Voltage: DC24 V 
Stroke:  4 mm ( adjustable ) 
Force:  1000 Gf
Power: 47 W
Current: 1.74 A
Resistance: 13.8 Ω
Lifespan cycles: ≥200,000 times
Working Cycle: 0.1s On, 1s Of

DESIGN-  Tubular Pull type, linear motion, open frame, plunger spring return, DC 24 V solenoid electromagnet.        All metal parts has down with 96 hours salt spraying testing and meet RoHS requirement. 

ADVANTAGES- Simple structure, small volume, high adsorption force copper coil inside, has good temperature stability and insulation, high electrical conductivity. Less power consumption, low temperature rise, no magnetism when power off.  It can be installed flexibly and quickly, which is very convenient.

APPLICATION:  DC Tubular solenoid electromagnet use in vending machines, transport equipment, office facility household appliance, mechanical, etc game machine, Sorting machine, door lock, etc.

NOTED:  As an actuating element of animation equipment ,because the current is large, the single cycle can not be electrified for a long time. The best operate time is in 2 seconds.

How is the tubular solenoid work? 

The tubular solenoid adopts the round tube structure design. The working principle is the same as the frame type solenoid, which makes straight linear motion. Because the housing t is made of round iron pipes, there is no need to open a mold for stamping. It only needs to be processed by CNC machine, and can be processed into different sizes and styles according to based requirement.
Due to the tubular structure design, the tubular force is maximized. It is an electromagnet with a saturated magnetic circuit. Most of the electromagnetism is converted into magnetic energy, and it has the characteristics of high power and long lifespan. The round tube electromagnet has a unique design, is more stable in performance, more reliable in operation, and easier for installation.
In addition, the round tubular housing shell provides good protection and anti-corrosion for the internal electromagnetic part, making it very suitable for use in conditions with small spaces and harsh environments.

Unit Features:

Housing Shell : Carbon steel housing enclosure with electroplated coating, high shining and smooth surface, RoHs and Reach compliance.

Plunger: φ12mm  Carbon steel material

Voltage: DC6 V

Stroke:  4 mm ( adjustable )

Force:  120 Gf

Power: 14.8 W

Current: 0.62 A

Resistance: 14.4Ω

Lifespan cycles: ≥300,000 times

Working Cycle: 0.1s On, 1s Of.

Customized  Solenoid tubular Solutions: 

Send your application requirements to jack@dr.solenoid.com 
Dimensions of the space available for the tubular solenoid.
Stroke length in mm.
Force or torque required.
Voltage available & current limit of supply

Customized Tubular Solenoid Solutions: 

Send your application requirements to jack@dr.solenoid.com 
Dimensions of the space available for the tubular solenoid.
Stroke length in mm.
Force or torque required.
Voltage available & current limit of supply

How is the tubular solenoid work? 

The tubular solenoid adopts the round tube structure design. The working principle is the same as the frame type solenoid, which makes straight linear motion. Because the housing t is made of round iron pipes, there is no need to open a mold for stamping. It only needs to be processed by CNC machine, and can be processed into different sizes and styles according to based requirement.
Due to the tubular structure design, the tubular force is maximized. It is an electromagnet with a saturated magnetic circuit. Most of the electromagnetism is converted into magnetic energy, and it has the characteristics of high power and long lifespan. The round tube electromagnet has a unique design, is more stable in performance, more reliable in operation, and easier for installation.
In addition, the round tubular housing shell provides good protection and anti-corrosion for the internal electromagnetic part, making it very suitable for use in conditions with small spaces and harsh environments.

Unit Features:

Housing Shell : Carbon steel housing enclosure with electroplated coating, high shining and smooth surface, RoHs and Reach compliance.

Plunger: φ12mm  Carbon steel material

Voltage: DC6 V

Stroke:  4 mm ( adjustable )

Force:  120 Gf

Power: 14.8 W

Current: 0.62 A

Resistance: 14.4Ω

Lifespan cycles: ≥300,000 times

Working Cycle: 0.1s On, 1s Of

Unit Dimension: 58*53*71 MM / 2.3*2.1*2.8 Inch 

How is the solenoid relay work?

A solenoid relay can get a large electric current from the car/machine battery and a small electric current from the ignition switch. When the ignition switch is turned on, a small electric current is sent through the starter solenoid. This causes the solenoid relay to close a pair of heavy contacts, thus relaying a large electric current through the starter motor, which in turn sets the engine in motion.
The starter motor is a series, compound, or permanent magnet type electric motor with a solenoid and solenoid operated switch mounted on it. When low-current power from the starting battery is applied to the starter solenoid, usually through a key-operated switch, the solenoid closes high-current contacts for the starter motor and it starts to run. Once the engine starts, the key-operated switch is opened and the solenoid opens the contacts to the starter motor.

Unit Feature: 

Starter solenoid Relay
Volt: 12v/24v ( adjustable according to your specification)
Current: 200A
Duty Cycle: Intermittent
No. Of Terminals: 4. ( M6,1/4M-28 zinc-plated steel stud terminal )
Note: (2) Threaded Tabs with Screws (1) with Ground Lead for Relay Control@ (2) 12 Gauge Wires with Ring Terminals for B+ & S Terminals, Contact Material: Copper.

Our Plastic-Body Continuous-Duty SPST Series Solenoid Relays are available for a wide range of applications, including starting small engines in lawn tractors, golf carts, sweepers, and more and for use in heavy-duty vehicles, hydraulic systems, and machinery.

Commonly referred to as remote-acting switches, the solenoid switch models available in this starter solenoid series feature single-pole, single-throw (SPST) circuitry with normally open contacts and a glass-reinforced-nylon body that is lightweight, durable, and resistant to corrosion.

The available 100 A continuous-duty starter solenoid models feature silver contact surfaces and can be found in configurations with stud coil terminals or blade coil terminals with insulated 12 V coils or 24 V coils. They come with either an L-style or F-style metal bracket.

The heavy-duty, continuous-duty solenoid relays with a 225 A make/break current rating come with either copper or silver contacts and are available with 12 V, 24 V, or 48 V insulated coils with stud contacts. All available heavy-duty solenoid relay models feature an L-style metal bracket.

The solenoid relay contains of two coils of wire that are wrapped around a moveable core. The solenoid relay acts as a switch to close the electrical connection and connects the starter motor to the vehicle's battery.
The solenoid replay plays a crucial role in your car/machine. Every time you start the car/machine, the solenoid turns and sets the engine running. But that only happens when you have a working starter. To ensure a healthy starting system, you need to be conversant with how a starter relay works.
The starter solenoid has two primary functions in a car's/machine starting system. Firstly,  it is responsible for pushing the drive pinion gear into engagement with the ring gear teeth. This engagement is what allows the starter solenoid to turn the engine over during starting.
Secondly, it operates as a relay switch to energize the starter motor. This means it connects the battery's heavy amperage to the starter motor when the ignition key is turned.
So, the correct answer to the question  

Specifications 

Max Voltage Rating:  14, 27, 36, 48 VDC 
Current Rating Continuous:  100A, 225A 
Coil Voltage:  12, 24, 36, 48 VDC 
Coil Type:  Insulated 
Connector: 0.25in (6.35mm) 
Blade Terminals for Coil Circuitry:  SPST 
Housing: Glass Reinforced Nylon, Black Normal Position: Open Dielectric Withstand Voltage: 600V Insulation Resistance: >100MΩ

Features and Benefits

Available in a wide variety of configurations with options for copper or silver contacts, 12 V, 24 V, or 48 V coils, and blade or stud coil terminals
SPST circuitry with normally open contacts
Lightweight, glass-reinforced-nylon body is durable and resists corrosion
5/16"-24 main contact studs with hex nuts and lock washers included

Applications

Small Engines
Heavy-Duty Equipment & Machinery