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The cylinder neodymium magnets
Ningbo Tongchuang is a professional factory to manufacture neodymium magnets in Ningbo China, we arrange to produce according to customers' requests.( the grades of magnets , the dimension, the coatings, the Qty, and so on.)
About the cylinder magnets, it is widely used in motors, speakers, and so no. The grade of such magnets can be Grade N, M , H, SH, UH,EH, AH.The details of each grade of the neodymium magnets please see our PDF catalogue " Magnets in Ningbo Tongchuang".
The size can be Diameter 1.20mm to 200.mm, length 0.50mm to 50.00.
The coating of NdFeB magnets can be Zn, Ni, Ni-Cu-Ni, Epoxy, CR3+ZN, NI+AG, NI+AU and so on.
If you are interested in our factory, please do not hesitate to contact us, we are at your service any time
Contact details:
Steve Chen (Mr.)
Email: tcexport@ndmagnets.com
Tel:86-574-88170908
Fax:86-574-88170906
Mobile:86-15990259284
MSN: toddywell@hotmail.com
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Neodymium magnets (Nd-Fe-B) are composed of neodymium, iron, boron and a few transition metals. These magnets are extremely strong for their small size, metallic in appearance and found in simple shapes such as rings, blocks and discs.
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Dexter Magnetics engineers magnetic assemblies using neodymium-iron-boron magnets (NdFeB) ranginge from 26 MGOe to 52 MGOe.
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Material Information
* Provide by powder metallurgical method with chemical compostition of NdFeB
* Very brittle & hard
* High resistance to demangnetization
* Poorest corrosion resistance of all commercial magnetic material
* Excellent cost to performance ratio
* Reasonable temperature stability
* Not suitable for application which exposed in high temperture conditions
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This products in the photo are made of NdFeB, N35. The size is D10x1. There is 3M adhesive on one side. They are mainly used in the advertisement. And we can produce according to your need. If you need, please contact us today.
Our contact information is follows:
Tel:+86 10 83993400
Fax:+86 10 83993403
E-mail: info@magengine.com
Contact person: Nancy Han
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Nd-Fe-B Magnets:
Wide range of shapes, sizes and grades for special applications, from the largest specialized Russian producer of permanent magnets.
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Sintered neodymium-iron-boron (NdFeB) magnets, also referred to as "neo" magnets, have been commercially available since November 1984. They offer the highest energy product of any material today and are available in a very wide range of shapes, sizes and grades. Earliest use of neo magnets was primarily for voice coil motors (VCM's) in hard disk drives and this market still accounts for about 55% of total sales dollars. Other applications include high performance motors, brushless DC motors, magnetic separation, magnetic resonance imaging, sensors and loudspeakers.
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This is the strongest magnetic material currently available. It is used in situations which demand a very thorough ferrous separation. Bakker Magnetics uses this material in systems for separating ferrous contamination from raw materials in which very small particles (μ range) are present or the types of steel to be extracted have weak magnetic properties. Neodymium magnets can also be used successfully for ferrous separation from viscous fluids. Neodymium is a rare earth material.
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PSM
Rectangular Cased Magnet
Length: 30 mm (1.181 in)
Height: 7 mm (.276 in)
Width : 20 mm (.787 in)
Width : 20 mm (.787 in)
MP4428M
Material: ABS
Size: Length: 72.0mm (2.83in) Height: 13.0mm (.51in)
Width: 12.0mm (.47in)
MP4450M
Material: Moulded Polystyrene
Size: Length: 30.0mm (1.181in) Height: 20.0mm (.79in)
Width: 9.0mm (.35in)
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Material Information
* Extensive Range of Anisotropic Ferrite (Ceramic) / NdFeB magnet set in mild steel housing, holding force can be reached 50Kgs.
* Internal or external threads for fastening and secure fixing.
* Supplied with a central tapped hole and a removable hook
* Standard finish in powder coated white; black & gray or galvanized Nickel or Zinc.
* Optional plastic can be filled to produce an even and protective surface.
* Have variety of uses including: Holding, securing, positioning, soldering, clamping and fixing applications.
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NEODYMIUM MAGNETS
Sintered neodymium-iron-boron (NdFeB) magnets, also referred to as "neo" magnets, have been commercially available since November 1984. They offer the highest energy product of any material today and are available in a very wide range of shapes, sizes and grades. Earliest use of neo magnets was primarily for voice coil motors (VCM's) in hard disk drives and this market still accounts for about 55% of total sales dollars. Other applications include high performance motors, brushless DC motors, magnetic separation, magnetic resonance imaging, sensors and loudspeakers.
SAMARIUM COBALT MAGNETS
Samarium cobalt magnets were first commercially available about 1970. Two materials have been developed to-date: SmCo5 and Sm2Co17. These materials are stronger than ferrite and alnico magnets and became widely used in high output motors where weight and size are an issue. They were also introduced into sensor applications where temperature stability was of importance. While neodymium iron boron magnets have replaced samarium cobalt in many applications, samarium cobalt is still used where high temperature performance, excellent thermal stability or excellent corrosion resistance is required. They are available from the Swift Levick Magnets Division in arcs, rods, flats, blocks and many other custom shapes.
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Material Information
- Composition of hard ferrite or rare earth magnet powders are embedded in thermoplastic and formed on injection moulding machine.
- It is possible to incorporate shafts or other insert to the magnet during manufacturing process
- Varieties of shapes can be manufactured. Such as gears, thin rings and many other complicated forms
- Good resistance to corrosion and chips
- All or only part of the magnet can be magnetized
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M1218
Ring Magnet
Size: Diameter: 15.0mm (.591in)
Width: 6.0mm (.236in)
Material: Anistropic sintered ferrite
M1219-1
Disc Magnet
Size: Diameter: 3.0mm (.118in) Length: 1.0mm (.039in)
Material: Neodymium Iron Boron (NdFeb) Nickel Plated
Features: High Strength
PRLM
Cylindrical Magnet
Size: Length 15.0mm Diameter 3.0mm
Material: Alcomax
RSH-32
Rectangular Magnet
Size: Length: 27.9 Height: 4.75 Width: 4.75
Material: Alcomax
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Material Information
* An alloy compose of SmCo/Sm2Co17 produce by powder metallurgical method
* Extremely hard & brittle
* High demagnetization resistance
* Excellent anti-corrosion properties
* Limited raw material supply result high in cost
* Outstanding thermal stability
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KM-20 KM-23 KM-26 KM-30
Residual Flux Density Br (kG) 8.5~9.7 9.7~10.2 1 0.2~10.9 10.9~11.5
Coercive Force bHc (kOe) 7.0~10.5 7.0~10.5 7.0~10.5 7.0~10.5
Max. Energy Product (BH)max 18.0~22.0 22.0~25. 0 25.0~27. 027.0~31.0
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Sintered samarium cobalt (SmCo) magnets, available since the early 1970's, offer the designer a tremendous combination of extremely high magnetic properties, outstanding thermal stability and excellent corrosion resistance. These characteristics make SmCo the ideal material in applications such as servo-motors, pump couplings, and sensors, particularly where the magnet is required to operate at high temperatures, across a broad temperature range or in a corrosive environment.
The first alloy composition was SmCo5 with maximum energy products of about 18 MGOe (140 kJ/m3). Shortly after this development, an additional alloy composition, Sm2Co17 was developed by Karl Strnat. This was developed over time to provide over 30 MGOe (240 kJ/m3). Although processing of the 2-17 composition is more difficult, it also has the advantage of generally containing less Cobalt than the 1-5 composition. 2-17 is also corrosion resistant and more stable at very high temperatures. Both types are manufactured by Arnold Magnetic Technologies AG to satisfy specific customer needs. Arnold's brand name of samarium cobalt is Recoma™.
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Samarium Cobalt is a powerful magnetic material made from rare earth minerals. It is almost impossible to demagnetise and always retains a very strong magnetic power. The material can be recognised by its dull metallic colour.
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Shallow pot magnets, extra strong
Materials: SmCo, plastic materials, soft iron, zinc coated
Temperature: max.200°C
M490A
M489A
M491A
M492A
M495A
M496A
M494A
M497A
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Material Information
* Produce by powder metallurgical method
* Chemical composition of Ba/Sr O FeO
* Relatively brittle & hard
* Good resistance to demagnetization
* Excellent corrosion resistance
* Raw material is readily available & low in cost
* Good temperature stability
* Most widely used permanent magnets.
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Molybdenum Permalloy, HI-FLUX® and SUPER-MSS® (sendust) powder cores are wound with magnet wire to make transformers or inductors. Maximum allowable energy dissipation for a given value of energy storage (inductance and current) or transformation (voltage and current), guide the selection of core material and size. Energy dissipation is usually specified in terms of maximum temperature rise, minimum efficiency or minimum Q value. Consider the following when choosing a core material.
- Molybdenum Permalloy Powder (MPP) cores provide the maximum Q and lowest core loss. MPP is the most stable core with respect to temperature and AC flux. It has the widest range of permeabilities and is considered the premium material for direct current output inductors of switched mode power supplies.
- HI-FLUX cores are a 50% nickel, 50% iron distributed air gap powder core. HF has up to 15,000 Gauss saturation flux density and core losses significantly lower than iron powder cores. These cores are ideal for switching regulator inductors, in-line noise filters, pulse and fly-back transformers applications. When used in applications with high DC current, HF cores can provide a reduction in inductor size as well as total cost.
- SUPER-MSS is an improved Sendust material, originally develped by Arnold Engineering. It is designed to replace iron powder by offering much lower losses, with energy storage capability higher than MPP. SUPER-MSS cores are an excellent choice for energy storage and filter inductor applications in switch mode power supplies. The DC bias characteristics of SUPER-MSS are also excellent compared to iron powder of similar permeabilities and size.
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Magnets
