Permanent Magnet Rotor for Motors
Permanent magnet rotor is the rotary part of a motor. The rotor is the moving part in an electric motor or generator. Magnetic rotors are designed with multiple poles. Each pole alternates in polarity (north & south). Opposite poles rotate around axis or a central point. Generally, there is a shaft located in the middle).
NSE can design and supply most of the rotors for our customers. We can make sure that the designed rotor will be perfectly used in our customer application. We can supply whole rotor solution or magnets to be used on the magnetic rotor.
Magnetic Rotor Usage
Magnetic rotors are primary used in electric motors, electric generators and wind turbines, which are usually for air conditioners, washing machines, refrigerators, power tools, servos, robots, compressors, automotive electronic components etc.
Neodymium iron boron ( NdFeB) is a type of rare earth magnetic material.
NdFeB is the most advanced commercialized permanent magnet material available today.
This material has similar properties as the samarium cobalt except that it is more easily oxidized
and generally doesn't have the same temperature resistance.
However, NdFeB magnets have the highest energy products approaching 52MGOe and are
mechanically stronger than samarium cobalt magents. NdFeB material is more costly by weight than
ceramic or alnico but produces the highest amount of flux per unit of volume or mass amking it very economical for many applicantions. Their high energy products lend themselves to comnpact designs
that result in innovative applications and lower manufacturing costs.
Unprotected NdFeB magnets are subject to corronsion. Surface treatments has ben developed that
allow them to be used in most applications. These treatments include copper, silver,, gold, nickel,
zinc and tin plating and epoxy resin coating.
Beneficial characteristics of NdFeB magnets include their very high energy product, very high
coercive force, and moderate temperature stability. Drawbacks include lower mechanical strength,
and low corrosion resistance when not properly coated or plated.
Magnetic Grades and Temperature:
The Grade of a magent directly refers to the Maximum Energy Product of the material that composes the magnet. It in no way refers to the physical properties of the magnet. Grade is generally used to describe
how "strong" a permanent magnet material is. The energy products is specified in the unites Gauss Oersted.
One MGOe is 1,000,000 Gauss Obersted. A grade forty (N40) would have a Maximum Energy Product of 40 MGOe.The higher the grade the "stronger" the magnet.
Magnetic materials have a wide range of working temperatures. The following chart the various materials and their maximum working temperature. NdFeB material
NdFeB Magnet is the most powerful commercially produced magnets.
· NdFeB Magnet has a higher Maximum Energy Product, (BH).max, which can easily reach 30 MGOe and even goes
up to 50 MGOe.
· NdFeB Magnet can replace SmCo Magnets in most cases, especially where operating temperature is less than 80
degrees Centigrade.
· NdFeB Magnet has very high strength.
· Relatively low cost.
· Compared to Alnico and SmCo magnets, relatively easy to machine
Additional Info
Brand: CBNB
Transportation: Ocean,Land,Air
Place of Origin: China
It is suitable for holding workpieces for turning on lathe machines and for internal cylindrical grinding machines, and milling machine, etc.
Features
1. All metal top plates-hard wearing brass and steel
2. Extra strong magnetic force and less remaining magnetism
3. While turning magnetic for ON/OFF, the face's accuracy of magnetic force surface doesn't change and can keep high precision processing surface;
4. Coolant and water proof structure
5. Easy to operate handle
6. High performance at a competitive price
Additional Info
Brand: CBNB
Transportation: Ocean,Land,Air
Place of Origin: China
14497 Permanent Magnets Suppliers
Short on time? Let Permanent Magnets sellers contact you.
This product is a high-temperature-resistant permanent magnet with a circular perforated surface. The material of the product is ferrite, which is a mixture of iron oxide and barium or strontium carbonate. It has good magnetic properties and can be widely used in modern electronics, especially in high-power motors and transformers. This is a High temperature resistant circular perforated ferrite permanent magnet. Each piece of the magnet is made with the later progressive technology and testing method. The magnets can be used in more applications in daily life, such as refrigerator doors.
The segment magnets designed for motors, generators and alternators are neodymium arc segment magnets, which are usually used for rotors and stators. Several arc magnets for sale with different inner diameters and polarities can be assembled into a multistage magnetic ring. In the motor, the magnetic ring with alternating polarity on the inner radius rotates near the copper coil. As one of the leading rare-earth arc magnets manufacturers in China, Beilun Meank not only offers the choice of arc segment neodymium magnets with specific sizes but also produces custom neodymium segment magnets according to orders.
Constant speed, achieving synchronous speed.
High power factor: A well-designed motor can achieve a power factor close to the value of 1.0.
Compact size, lightweight, and low noise.
High efficiency: During normal operation, there is no copper loss in the rotor. The high power factor results in a smaller rotor current and reduced copper losses in the rotor windings.
The motor's speed is directly proportional to the frequency, simplifying the control system.
The motor can be designed with multiple stages and low-speed high-torque capabilities, eliminating the need for a gearbox and enabling gearless transmission.
Wide speed range, with a high-speed design that can reach up to 10,000 revolutions per minute (rpm).
Features:
Safer than normal lifting magnets by pretesting lifting safety.
In some complicated situations it is difficult to estimate the actual lifting value with enough safety coefficient and consequently you are not sure if the lifting operation is safe or not, then you can take the following steps to get a safer lifting operation.
1. Place the lifting magnet at the load.
2. Turn the handle counterclockwise to the vertical position.
3. Insert the tip of the screw driver shipped with the lifting magnet into a small hole at the yellow cover to hold the handle in the position.
4. Lift the lifting magnet and the load 2¡±-3¡± from the floor.
5. If the load can be lifted, place the load back onto the floor.
6. Take off the screw driver and turn the handle to ON position. The handle is locked by the slide pin.
7. Lift the load again. This time the safety coefficient is 2 at least.
MaximMAGNET makes quality Super strong rare earth permanent magnetic disc for different kinds of applications, we aim to build a reliable brand name in magnetic industry.
Detailed specifications:
1.Size: Custom-made as per drawings/requirements;
2.Grade: 11.7-14.8kGs magnetic residual;
3.Performance: consistent magnetic flux, high coercive force, low temperature coefficient and low irreversible magnetic losses.
4.Coatings: Ni, Zn, NiCuNi, Epoxy, Nicu+Epoxy, NiCu+Sn, Passivation, Silver, Gold, Teflon, Everlube etc.
5.Applications: Motor assemblies, Automobile, Wind turbine/Generator, MRI, Speaker, IT industry, Sensor, Communication equipments, Scanner, Camera, Home appliance and so on.
Product description
[ctdg dry drum magnetic separator]
Brief
Ctdg dry drum magnetic separator is a new type high-efficiency magnetic preseparation equipment for materials with big size, such as lump iron ore, mill sales and other ferrous metals...
Material: sintered ndfeb magnet
Grade: N48
Dimensions: 2" L x1" W x 1/2" T
Tolerances:
Plating/Coating: Ni-Cu-Ni (Nickel)
Magnetization Direction: Axial (through 1/2")
Max Operating Temp: 176oF (80oC)
Application: Wind Turbine
Since the first oil crisis in 1973 and the radiation leak at Fukushima in 2011, more and more eyes on wind power. For example, affected by the nuclear leakage accident in Japan, Germany will plan to abandon nuclear power to generate electricity completely. And the same time, strive to develop new & Renewable Energy, such as wind power and solar energy. Refer to wind power, magnet which plays important role in wind turbine generator to generate power cannot be ignored.
At present, the magnet which used on wind turbine alternator is Sintered NdFeB magnet (Commonly known as magnet king, permanent magnet, rare earth magnet);
The common grades are N42, N48, N50, and N38SH and so on;
The common shapes are segment, block, wedge, and trapezoid;
The coating is Ni-Cu-Ni triple plated
The biggest block magnet for wind turbine generator is about 240x80x40 mm (the thickness cannot over 50mm)
The normal block size is 2 (2 inches x 1 inch x 1 inch)
China also develops wind energy rapidly these years. In 2011, there is half Wind Power Equipments for the whole world made in China. In this field, China is ahead of Germany and USA, and dominates the industry. This mainly depends on domestic magnet manufacture. Recently, considering high cost in purchasing wind turbine from China, many customers plan to purchase accessories and material and make wind turbine by themselves. Of course, this includes magnet purchase from China.
China magnet source care customers benefit and will provide Wind Turbine Permanent Magnet with good quality, reasonable price; to satisfy customers requirement in making family-type or industrial wind turbine.
1. To delivery by air or by express: Anti-magnetic package (six sides iron sheets in the carton);
2. To Ship by sea: normal hard Paper Carton and Pallet;
3. To as per clients' special requirements.
We can produce the largest size of NdFeB permanent ring in the world, suitable for some large size and high pricision equipment
This magnet ring is made of NdFeB permanent magnet materials by sintered.adopt magnet field rotate scan to generate ultra high magnet field strength of radiation magnet field,skewed magnetization.have multi-pole OD/ID magnetization and uni-pole OD/ID magnetization two models.its maximumOD reach 300mm,minimium ID reach to 60mm,is the largest magnet ring in the world as far to know.work temperature 200â??. can be used in some large and high precision equipments and intruments.
Custom different size of NdFeB magnet Ring
NdFeB permanent magnet materies came out in 1980, Are widely used in motor,speaker,toys and electron etc. It's composed of Neodymium,Ferrite,Boron and other trace metals.
Have ultra high magnet performance, maximum magnetic energy product (Bhmax) 10times of higher than Ferrite.have better mechnical performance,can be cut to different shapes and drilling. Its maximum work temperature reach up to 200â??.Due to its element include easy corrosion component , be demanded to different surface coating treatment according to using requirements.( such as Zincification,Nickel Plating,Au Plating, Epoxy Plating etc.)
NdFeB is a alloy magnet composed of Neodymium,Fe,Boror and other trace metal elements. Is the strongest magnet rare earth magnet as far to found. Have very high magnetic energy product ( 8MGOe-55MGOe) and better Coercivity.its manufacturing process is mature, have strict quality assurance,perfect technical service and good performance cost ratio.
We manufacturing and sale top quolity of NdFeB permanent magnet,include the largest size of NdFeB magnet ring in the world !!!
a: The Most powerful and advanced commercially produced : BH (Max52MGOe, Three times larger than anisotropic ferrite.
b: Cost-effective: Neodymium, one of the most plentiful rare earth elements ,combined with inexpensive iron , enable NdFeB magnets the best value in cost and performance.
c: Mechanical properties : Good property coherence, high flux density , high coercivity, low oxygen content.
Unique Features of Ichoice
a: Annual Output: 3000 metric tons
b: Grades Available: N52,50M,48H,45SH,40UH,35EH,33AH Series and grades below.
c: Testing Programs: Salt Spray Test, PCT Test, HAST Test, Metallographic analysis, Magnetic Properties Test, Oxygen Test, etc.
d: Price: Advantageous for high-grade or big size or arc products.
e: Delivery time: 10-15days.
.Big blocks: widely used in motors, cleaning machines and medical equipment
.Small blocks: widely used in toys and decoration
.Properties: N35 to N52, N30M to N50M, N30H to N48H, N30SH to N45SH, N28UH to N40UH, N28EH to N38EH
Primary Competitive Advantages:
."Green" Product
.Experienced Technical Staff
. competitive price
. high quality
. good service
.Prompt Delivery
Main Export Markets:
.Eastern Europe
.North America
.Mid East/Africa
.Central/South America
.Asia
.Western Europe
.Australasia
Payment Terms:L/C, T/T
Delivery Details:
FOB Port:Ningbo,Shanghai
Lead Time: 10 days
We are 9 years magnet factory, which specializing in designing, manufactureing, and marketing Neodymium magnet. Customized size and shapes are accepted. Our products include disc magnet, block, magnet, magnetic rod, magnet bar, cylinder magnet, magnetic filter, magnet grill, PVC magnet button and other irregular magnets. Kindly offer me your specific size and quantity, then best price can be offered ASAP.
14497 Permanent Magnets Suppliers
Short on time? Let Permanent Magnets sellers contact you.
