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Magnetic rubber magnets can also be referred to as magnet rolls, flexible magnetic sheets, or magnetic sheet rolls.It’s an important family member of flexible magnets. QIZHI’s magnetic rubber sheet is a ferrite permanent magnet material, which can be single-side or double-side magnetized.Flexible magnetic sheet is easy to post on iron plates or ferrous surface, and free to remove and replace. Flexible magnetic sheet is anti-rust and does not easily lose magnetism.Magnetic rubber sheets are typically magnetized on one side and include a UV coating for protection. Printed paper, plastic film, fabric, and other materials can all be bonded to it. Flexible magnetic sheets are free to remove and replace, and they are simple to mount on iron plates or other ferrous surfaces. UV Coating Protection: UV coating is used to avoid the blocking or sticking issue inside of Plain-Mag rolls or stacks. We usually apply UV coating on the magnetized side. Both sides UV coating or UV on edges or no UV are available by customer’s request. Back-print with Brand or Logo:Magnets with back printing can help to raise brand awareness and recognition. Tengye offers incredibly affordable printing services thanks to its practical printing equipment. Custom Magnetization: one-side magnetization, double-side magnetization, or no magnetization as requested. we can supply also the magnetizer equipment.

The pot magnet is a magnet that is wrapped in a steel shell and shaped like a pot, so we call it a pot magnet , also called  magnetic component,cup magnet. Through the design of the magnetic circuit, the steel shell will increase its tensile force. Depending on the desired holding force and operating temperature, various pot magnet are available like alnico pot magnet, neodymium pot magnet or ferrite pot magnet. As an additional service, we can make pot magnet to your exact specifications.  Pot magnet offer several advantages, including their ease of use in clamping applications, versatility, and durability. Can hold metal sheets, doors, or other objects in place and have adjustable strength. The magnet's mechanical integrity may be strengthened and damage prevented by the metal shell.And available in a variety of materials to satisfy particular holding force and temperature needs. There are several types of pot magnets: counterbore pot magnets, through-hole pot magnets, internal thread pot magnets, and a screw hole in the center of the pot magnet. The range of Pot Magnets suits a diverse variety of fixing and fastening applications including: Point of Sale;Window dressing;Door, cupboard and gate clamps;False ceiling clamps;Signs and banners;Torque limited seals; Jigs and fixtures;Lighting fixtures and assemblies;Marketing and exhibition displays;Retrieval magnets;Industrial fixings;

As a general rule, neodymium magnets are lighter and more expensive, while ferrite magnets are cheaper, but they are heavier. You cannot say one magnet type is better than another regarding sound quality, as it depends on your speaker application. Promotional materials from speaker manufacturers are great at explaining why Neodymium magnets produce such good sound, yet many audiophiles enthusiastically talk about –and continue to love- the sound output of speaker systems made with ferrite magnets. So which magnet is the better speaker magnet? The reason so many have debated this is that the decision depends on a number of factors. Is the speaker designed for home? Will it be installed in an automobile? Is the voice coil optimized for the magnet? How well are the other components matched? Are size and weight important factors? The most appropriate magnet material is evident in speakers such as guitar speakers. I find that ferrite magnets have a lower “gnarl” sound, which can sound great for distortion and metal music; however, neodymium magnets have a brighter mid-range. Ultimately, the choice between neodymium and ferrite magnets for speakers boils down to a balance of factors, including cost, weight, size, and the specific sound qualities you aim to achieve. It’s always a good idea to experiment with both types to find the one that suits your individual sound preferences and setup.

Following three types of stepper motors are in common use: 1. Variable reluctance motors. 2. Permanent-magnet motors. 3. Hybrid motors. Variable Reluctance Stepper Motor The variable reluctance motor is based on the principle that an unrestrained piece of iron will move to complete a magnetic flux path with minimum reluctance, the magnetic analog of electrical resistance. The stepper motor like variable reluctance is the basic type of motor and it is used for the past many years. As the name suggests, the rotor’s angular position mainly depends on the magnetic circuit’s reluctance that can be formed among the teeth of the stator as well as a rotor.   Permanent Magnet Stepper Motor   Permanent magnet motors use a permanent magnet (PM) in the rotor and operate on the attraction or repulsion between the rotor PM and the stator electromagnets. This is the most common type of stepper motor as compared with different types of stepper motors available in the market. This motor includes permanent magnets in the construction of the motor. This kind of motor is also known as tin-can/can-stack motor. The main benefit of this stepper motor is less manufacturing cost. For every revolution, it has 48-24 steps.   Hybrid Synchronous Stepper Motor   Hybrid stepper motors are named because they use a combination of permanent magnet (PM) and variable reluctance (VR) techniques to achieve maximum power in small package sizes. The most popular type of motor is the hybrid synchronous stepper motor because it gives a good performance as compared with a permanent magnet rotor in terms of speed, step resolution, and holding torque. But, this type of stepper motor is expensive as compared with permanent magnet stepper motors. This motor combines the features of both the permanent magnet and variable reluctance stepper motors. These motors are used where less stepping angle is required like 1.5, 1.8 & 2.5 degrees.

A stepper motor is a type of brushless synchronous DC motor that unlike many other standard types of electric motors, doesn’t just rotate continuously for an arbitrary number of spins until the DC voltage passing to it is shut off.Instead, stepper motors are a type of digital input-output device for precision starting and stopping. They’re constructed so that the current passing through it hits a series of coils arranged in phases, which can be powered on and off in quick sequence. This allows the motor to turn through a fraction of a rotation at a time - and these individual predetermined phases as what we refer to as ‘steps’. A stepper motor is designed to break up a single full rotation into a number of much smaller (and essentially equal) part rotations. For practical purposes, these can be used to instruct the stepper motor to move through set degrees or angles of rotation. The end result is that a stepper motor can be used to transfer minutely accurate movements to mechanical parts that require a high degree of precision.The stepper motors are very widely used in computer peripherals such as serial printers, floppy disc drives, etc.Another big application field for stepper motors is found in the numerical controls of machine tools and workpieces. Other applications include process control systems.facsimiles, space-crafts.watches, semi-automatic wiring machines for printed circuit boards. etc.

A motor is a type of electrical machine that converts electrical energy into mechanical energy. These motor can either run on AC electrical energy or DC electrical energy. Therefore, the motors are classified into two main types; AC motor & DC motor.Both types of motor generate mechanical energy used for moving any mechanical load etc. but their construction, control, efficiency & applications are quite different. You may know more about the basic information about AC and DC Current and Voltage in the previous post. What are AC Motors? AC Motors are electromechanical devices that convert electrical power in the form of alternating voltage and current into mechanical energy. AC Motors come in different varieties which can be characterized as being either Induction Motors (which are asynchronous) or Synchronous Motors, and which contain a stator and rotor. Induction motors can be either Single Phase or Polyphase, while synchronous motors include Reluctance Motors and Hysteresis Motors. See our related guide, Types of AC Motors, to learn more about each of these. What are DC Motors? DC Motors can convert the electrical energy that is supplied to it in the form of direct current into mechanical rotational energy. The same device can be used in reverse to produce DC electrical power from the rotation of the motor shaft. When used in that manner, the device is functioning as a generator. There are several key types of DC motors available. These include Permanent magnet DC Motors, Series Wound DC Motors, Shunt DC Motors, Compound DC Motors, and Brushless DC Motors. Our related guide, Types of DC Motors, contains more information about each of these types. AC motors are used for their best output power performance, their reliability & the requirement of less maintenance. While the DC motor used because of their easier speed control & direction. But their frequent maintenance is very costly. Overall, using a VFD with an AC motor can provide a less expensive solution to the problemIf we talk about the major difference between DC and AC motor is the commutator and one can easily differentiates and identify either is it an AC motor or DC motor. In short, if there is a commutator in a motor, It is a DC motor, otherwise, it is an AC motor.

There are two types of commonly used DC motors: Brushed motors, and brushless motors (or BLDC motors). As their names imply, DC brushed motors have brushes, which are used to commutate the motor to cause it to spin. Brushless motors replace the mechanical commutation function with electronic control. A brushless DC motor, also known as synchronous DC motor, unlike brushed DC motors, do not have a commutator. The commutator in a brushless DC motor is replaced by an electronic servomechanism that can detect and adjust the angle of the rotor. A brushed DC motor features a commutator that reverses the current every half cycle and creates single direction torque. While brushed DC motors remain popular, many have been phased out for more efficient brushless models in recent years. The following table summarizes the main advantages and disadvantages of each motor type: In many applications, either a brushed or brushless DC motor can be used. They function based on the same principles of attraction and repulsion between coils and permanent magnets. Both have advantages and disadvantages that may cause you to choose one over the other, depending on your application’s requirements.

Do you need a magnet but don't know which strength to choose? This guide will help you make an informed decision. There are different strengths of magnets, each with its own uses, from weak refrigerator magnets to powerful neodymium magnets. Whether you're a DIY enthusiast, a science buff, or just need a magnet for everyday use, understanding the magnet strength chart is important. Neodymium grades typically range from N33 to N55 (MGOe 33 – MGOe 55). These are the most sought after magnets due to their ability to produce very powerful magnetic fields, even from a very small surface area.The larger the number next to the letter N, the stronger the magnetic field. Higher grades generally cost slightly more than lower grades of neodymium.     Technical Definitions Remanence (Br) – This is the measurement for the material’s ability to retain magnetism after being exposed to a powerful magnetic pulse. The higher this unit, the more magnetism the material can retain and consequently, the stronger the magnet. Coercive Force (Hc)  The measurement to eliminate the magnetic field when exposed to an opposing magnetic field. The higher this unit, the more resistance a magnet has to demagnetisation. Intrinsic Coercive Force (Hci)  The required strength of the opposing magnetic field to completely demagnetise a magnet to the value of 0. Maximum Energy Product (BH)max – This measurement shows the magnetic density of a material that produces a magnetic field. This measurement establishes how powerful a magnetic field is and it’s often abbreviated as MGOe. kG (KiloGauss) – 1 Kilogauss = 1000 Gauss. Gauss is the unit of measurement that measures magnetic induction.  T (Tesla) – 1 Tesla = 10,000 Gauss. Tesla is the unit of measurement that measures magnetic induction. Oe – Oersted –  A measurement of magnetic field strength. kA/m (kiloampere) – 1 kiloampere = 12.56 oersted – A measurement of magnetic field strength MGOe (Maximum Energy Product) – The unit of measurement that refers to the strength, power or magnetic density of a magnetic field. kJ/m³ (Kilojoule per Cubic Meter) – 1 Kilojoules = 1,000 Joules – The unit of measurement for energy. 

Neodymium magnets are the strongest magnets commercially available and due to their strength, even tiny neodymium magnets are effective, making them incredibly versatile. Since the creation of the first neodymium magnet, they have been used for many purposes. Super-strength neodymium magnets are essential to many industries, including technology, medical research, electrical motor manufacturing, and renewable energy sources. Many of the advances made in the last 30 years would not have been possible without neodymium magnets. Major Uses of Neodymium Magnets: Motors & Generators   Electric motors rely upon a combination of an electromagnet and a permanent magnet, usually a neodymium magnet to convert electric energy into mechanical energy. A generator is reverse, it converts mechanical energy into electric energy by moving a conductor through a magnetic field. Hard Disk Drives A hard disk drive records data by magnetising and demagnetising a thin film of ferromagnetic material on a disk. Each disk is separated into many tracks and sectors and each sector has many tiny individual magnetic cells which are magnetised by thdrivees read/write head when data is written to the drive. Hard drive heads are made from ceramic wrapped in a fine wire coil. When writing, the coil is energised, a strong magnetic field fors, and the recording surface adjacent to the gap is magnetised. Strong magnets are also used in the actuator that moves the read/write head into position. Audio Equipment such as microphones, acoustic pick-ups, headphones and loudspeakers Permanent magnets are used in speakers alongside a current-carrying coil which converts electricity into mechanical energy that moves the speaker cone that in turn changes the pressure of the surrounding air creating sound. Microphones work in reverse; a diaphragm is attached to a coil of wire which sits within a permanent magnet, when sound moves the diaphragm, the coil moves too. As the coil moves through the magnetic field created by the permanent magnet an electrical signal is produced which is characteristic of the original sound. Reed Switches A reed switch is a switch operated by a magnetic field. Reed switches consist of contacts placed on ferrous reeds, encased in a sealed glass tube. They can be designed to be open or closed by default in the absence of a magnetic field and are activated by bringing a neodymium magnet close to the switch. A typical use for reed switches is detecting the opening and closing of doors in burglary alarm systems. Magnetic Separators Most processing facilities will use some form of magnetic separation system to remove contaminating ferrous and paramagnetic items from production or processing lines. This is usually done using a form of conveyor system and strong filter rod magnets. Lifting Machinery Permanent magnets are essential in the heavy engineering and manufacturing industries, used for lifting large ferrous items. Switchable release magnets using super-strong neodymium magnets are commonly used as they are supplied with a quick-release switching mechanism. ABS (anti-lock braking) System Sensors Passive ABS sensors use neodymium magnets wrapped inside copper coils. A sensor is placed close to the ABS reluctor ring and as the ring rotates a voltage is induced in the copper wire. This signal is monitored by the vehicle’s computer system and used to define wheel speed. Point of Sale Displays Every time you enter a shop or restaurant you might not realise that you are surrounded by neodymium magnets but they will be there. That’s because many point of sale display advertising signs and stands use small are held together using small but strong neodymium magnets or are suspended from steel ceilings using neodymium hook magnets. MRI Scanners MRI scanners produce a large magnetic field that aligns the protons in a human body in the direction of the magnetic field. Radiofrequency waves are then directed at the body producing detailed internal images. Many ‘open’ MRI machines used in hospitals use large neodymium magnets, they literally help save lives.

The power of the micro reduction motor should be selected based on the required power of the product, and the micro motor should be operated at rated load as much as possible. When selecting, the following two points should be noted:1.If the power of the micro motor is selected too low, it will cause long-term overload of the micro motor, causing insulation damage due to heating, and even the micro motor to be burned;2.If the power of a micro DC motor is selected too high, its output mechanical power cannot be fully utilized, and the power factor and efficiency are not high, resulting in waste of electrical energyWhen selecting a micro reduction motor for different products, it is necessary to correctly select the power of the micro motor through the following calculations or comparisons:For constant load continuous operation mode, if the power Pl (kw) of the load is known, the required power P (kw) of the micro motor can be calculated as follows:P=Pl/nln2, whereNl is the efficiency of the product;N2 is the efficiency of the micro motor (i.e. transmission efficiency).The power calculated according to the above equation may not necessarily be the same as the product power. Therefore, the rated power of the selected micro motor should be equal to or slightly lower thanGreater than the calculated power.Compared with continuous rated micro motors with the same power, short time rated micro motors should be selected as much as possible when conditions permit. For micro DC reduction motors with intermittent working quotas, the power selection should be based on the size of the load duration, and micro motors specifically designed for intermittent operation should be selected.