Sintered Nd-Magnet Cylindrical N52 Neodymium Magnets China Manufacturer, Neodymium Rare Earth Rod Magnet for Encoder, Strong Bar NdFeB Permanent Magnet, Cylindrical shape magnets N52 Sintered Nd-Magnet Cylindrical N52 Neodymium Magnets for Encoder Feature Size: 1/2″ diameter x 1″ high Material: Neodymium (NdFeB) Magnet Grade: N52 Magnet Shape: Rod / Bar / Cylinder Plating/Coating: Ni-Cu-Ni Max Operating […]
Sintered Neodymium Block High Performance Magnets Epoxy Plated for UK Customer, N38UH Rare Earth Powerful Magnet, high grade NdFeB Magnet, Anti-Corrosion Epoxy NIB Block Magnets FOR Motion (Motors and Solenoids) Strong Permanent Magnet for Motors China Suppliers
Sintered Neodymium Block High Performance Magnets Epoxy Plated Specifications (1″=25.4mm; 1lbs=0.453kg)
Grade N38UH or other high grade
Dimensions(mm): 27mm length * 12mmwidth * 3mm thickness
Plating: Epoxy plated
Working temperture : 150 ℃
Tolerance : ±0.1mm/±0.05mm
Magnetizing: Thickness magnetization
100 pieces in stock, 3 weeks for bulk order
1 Lot = Half with NS and Half with SN Poles
What are neodymium magnets? Are they the same as “rare earth”?
Neodymium magnets are a member of the rare earth magnet family. They are called “rare earth” because neodymium is a member of the “rare earth” elements on the periodic table. Neodymium magnets are the strongest of the rare earth magnets and are the strongest permanent magnets in the world. Rare Earth Powerful Magnet Block N48 for Kazakhstan Customer
What are neodymium magnets made from and how are they made?
Neodymium magnets are actually composed of neodymium, iron and boron (they are also referred to as NIB or NdFeB magnets). The powdered mixture is pressed under great pressure into molds. The material is then sintered (heated under a vacuum), cooled, and then ground or sliced into the desired shape. Coatings are then applied if required. Finally, the blank magnets are magnetized by exposing them to a very powerful magnetic field in excess of 30 KOe.
How is the strength of a magnet measured?
Gaussmeters are used to measure the magnetic field density at the surface of the magnet. This is referred to as the surface field and is measured in Gauss (or Tesla). Pull Force Testers are used to test the holding force of a magnet that is in contact with a flat steel plate. Pull forces are measured in pounds (or kilograms).
What does the “N rating”, or grade, of the neodymium magnets mean?
The grade, or “N rating” of the magnet refers to the Maximum Energy Product of the material that the magnet is made from. It refers to the maximum strength that the material can be magnetized to. The grade of neodymium magnets is generally measured in units millions of Gauss Oersted (MGOe). A magnet of grade N42 has a Maximum Energy Product of 42 MGOe. Generally speaking, the higher the grade, the stronger the magnet. Strip Block Neodymium Permanent Motion Motor Magnet Epoxy Plated High Performance Magnets
Because of the manufacture equipments constraint, there is a certain limit range of the dimensions and the mechanism accuracy of magnets. Please check the Geometry and machining limits in our resource center.
Neodymium magnets can be magnetized in any direction as long as it is aligned properly. In some instances multiple pole magnetizations is not possible; when it is possible, special fixtures are required. You can find all information of our Methods of Magnetization in our resource center. Sintering Neodymium Block High Performance Magnets Black Epoxy Plated
Low grade Neodymium magnet may lose strength if heated above 80°C. High grade Neodym magnets have been developed to function at temperatures up to 220°C with little irreversible loss. The need for low temperature coefficient in neodymium magnet applications has triggered several grades to be developed to meet specific operating requirements. Please refer to the Demagnetization Curves of some typical neodymium magnets in the data sheet.
|Epoxy||Ni+Cu+Epoxy||15-30||Black, Grey||<120||/||>72-108||Very Good|
|Passivation||No coating||1-3||Dark Grey||/||/||Temporary Protection||/|
|Phosphated||No coating||1-3||Dark Grey||/||/||Temporary Protection||/|
|Nickel||Ni+Cu+Ni||Suitable for working conditions with high requirements on surface protection and treatment.|
|Zinc||Zinc||Suitable for working conditions with low corrosive and humidity requirements.|
|Zinc||Cr3+Zn||Suitable for hot, humid and industrial atmosphere for its high self protection performance.|
|Sn||Ni+Cu+Ni+Sn||Suitable for parts that may be welded or placed into electric equipment.|
|Au||Ni+Cu+Ni+Au||Suitable for parts that placed into the high reliable electronic equipments or decoration.|
|Ag||Ni+Cu+Ni+Ag||Suitable for parts that may be welded or placed into the electric equipment.|
|Epoxy||Epoxy||Suitable for parts used to insulate the electric equipments or placed in the high corrosive industrial atmosphere.|
|Epoxy||Ni+Cu+Epoxy||Usually applied to special working conditions with customized anti-corruption requirement.|
|Passivation||No coating||Suitable for the situation of short-transportation and storage.|
|Phosphated||No coating||Suitable for the situation of short-transportation and storage.|
1. The SST results differ from coating. In general, Salt Spray Test results, which is coated by grinding (small size magnets), is better than the one, which is coated by hanging up (big size magnets).
2. Salt Spray Test (SST) condition: 5% NaCl, 35°C, continuously spray a certain time, test whether there is corrosion on coating surface.
3. Pressure Cooking Test (PCT) condition: 2 atm, 95% RH (relative humidity), 121°C to test the coating adhesion. (Zinc, Passivated/Phosphated, and Epoxy are not suitable for PCT).
4. Other test methods for coating: Drop Test, Cross Cut test, Heating and Spilling Test, Constant Temperature and Humidity Test and etc.