Small Round NdFeB Disc Magnet of Different Sizes

Model NO.: NdFeB magnet
Quality System: ISO/Ts16949:2009; ISO9001:2000; QS-9000
Certificate: SGS, RoHS, Reach
Working Temperature: 80 to 230
Factory: Over 20 Years Experiences
Specification: RoHS, TUV
Origin: Jiangmen, China
Welcome to Jiangmen Magsource New Material Co.,LTD.
www.jpmfmagnet.com
Specialized in producing magnet materials over 20years
Aims to be the best Neodymium Magnet supplier in China
Offer Super Strong NdFeB Magnet, Professional Service.

NdFeB magnets -The Strongest Permanent Magnets Today

NdFeB(Neodymium-Iron-Boron) magnet is used most popular by people in industry and our daily life, because it has superior magnetic properties than other kind of magnets.
 
About NdFeB Disc/Cylinder/Round magnet:
Material: Sintered NdFeB Magnet/Sintered Neodymium Magnet 
Shape: cylinder 
Size: Diameter(D)xHeight(H) 
Grade: N30-N52, M, H, SH, EH, UH 
Magnetic properties: Hcj, Hcb, BH, Br, BHmax, working temperature   
Coating: Ni/Nickel, NicuNi, Black nickel, Gold, Silver, Chrome, Parylene, Zn/Zinc, Color Zinc, Tin, Cooper, Epoxy etc 
Application: widely used in sensor, speakers, reed switches, motor, rotor, wind turbines/generators, AC/DC motors, drive motors, servo motors etc  
Magnetization directions: by Axial or by radial

We customize neodymium cylinder magnet according to customers’ requirements, drawing or actual samples, magnet grade N, M, H, SH, UH, EH, AH.

1. Specifications of Sintered Neodymium Magnet
  
Place of Origin Guangdong, China(Mainland)
Magnet Type Sintered NeFeB / rare earth / Permanent
Composite Neodymium-Iron-Boron
Grade N35-N54( M, H, SH, UH, EH, AH series )
Working Temperature The Max. temp. is up to 80 / 100 /120 /150 / 230 celsius under different grade.
Tolerance +/-0.03 to +/-0.15
Shape of Magnet Disc, Cylinder, Block, Ring, Sphere(ball), Arc Segment(Tile) and more custom shapes
Size various sizes custom-make welcome
Coating Ni, Zn, NiCuNi, gold, silver, copper, epoxy, etc.
Magnetization Direction Axially Magnetized, Radially Magnetized(Diametrically), Multi-poles Magnetized or other customized
Quality System/Certificate ISO/TS16949:2009; ISO9001:2000; QS-9000, SGS,RoHS,REACH
Application Industrial Magnet, Toy Magnet, Health Magnet and more 
Packaging Antimagnetic Packaging / Neutral Packing / Custom-make welcome
Shipping Method by see, by air or by int'l express
Lead Time 10~25days


2. Magnet Display
Neodymium-Iron-Boron (NdFeB) magnets are composed of neodymium, iron, boron and a few transition metals. These kind of permanent magnets are extremely strong and can be producted in different shapes and sizes (ie. arcs, blocks, discs, rings).
It has higher unit magnetic properties than other magnet and assure you of smaller size and lighter weight in designing devices.
Small Round NdFeB Disc Magnet of Different Sizes
3. Applications of Sintered NdFeB Magnets
The permanent magnets, which are called the next centurial magnets, are used in a wide range of industries including computer, automobile, electric machinary, electro-sound devices, automatic control, magnetic force mechanism, microwave commnication, petrochemical industry, medical apparatus and equipment. The magnets are the ideal materials for the subminiature magnetic devices with high function.NdFeB magnets is especially suitable for developing those new products demanding high quality, small volume and light weight.
 · Automotive Starters                    · Microphone Assemblies
 · Computer Rigid Disc Drives  · Particle Accelerators
 · DC Motors  · Printers
 · Headphone  · Relays
 · Halbach Arrays  · Servo Motors
 · Linear Actuators  · Stepper Motors
 · Linear Motors  · Switches
 · Loud Speakers  · Undulators
 · Magnetic Bearings  · Vacuum Deposition 
 · Magnetic Couplings   · Voice Coil Motors (VCM)
 · Magnetic Separators  · Wind Turbines 


4. Technical Data of Sintered NdFeB Magnets
 MAGNETIC AND PHYSICAL CHARACTERISTICS     
Series Grade Remanence  Coercive Force  Intrinsic Coercive force  Max. Energy Product  Max. Working Temp.
Br Hcb Hci (BH) max L/D=0.7
T kGs KA/m KOe KA/m KOe KJ/m3 MGOe ºC °F
N N35 1.17-1.24 11.7-12.4 ≥860 ≥10.8 ≥955 ≥12 263-295 33-37 80 176
N38 1.22-1.30 12.2-13.0 ≥860 ≥10.8 ≥955 ≥12 287-318 36-40 80 176
N40 1.26-1.32 12.6-13.2 ≥860 ≥10.8 ≥955 ≥12 302-334 38-42 80 176
N42 1.29-1.35 12.9-13.5 ≥860 ≥10.8 ≥955 ≥12 318-350 40-44 80 176
N45 1.32-1.38 13.2-13.8 ≥860 ≥10.8 ≥955 ≥12 334-366 42-46 80 176
N48 1.37-1.43 13.7-14.3 ≥836 ≥10.5 ≥876 ≥11 358-390 45-49 80 176
N50 1.40-1.45 14.0-14.5 ≥836 ≥10.5 ≥876 ≥11 374-406 47-51 80 176
N52 1.42-1.48 14.2-14.8 ≥836 ≥10.5 ≥876 ≥11 390-422 49-53 80 176
N54 1.45-1.51 14.5-15.1 ≥836 ≥10.5 ≥876 ≥11 398-438 50-55 80 176
M N35M 1.17-1.24 11.7-12.4 ≥860 ≥10.8 ≥1114 ≥14 263-295 33-37 100 212
N38M 1.22-1.30 12.2-13.0 ≥915 ≥11.5 ≥1114 ≥14 287-318 36-40 100 212
N40M 1.26-1.32 12.6-13.2 ≥939 ≥11.8 ≥1114 ≥14 302-334 38-42 100 212
N42M 1.29-1.35 12.9-13.5 ≥955 ≥12.0 ≥1114 ≥14 318-350 40-44 100 212
N45M 1.32-1.38 13.2-13.8 ≥987 ≥12.4 ≥1114 ≥14 334-366 42-46 100 212
N48M 1.37-1.43 13.7-14.3 ≥1019 ≥12.8 ≥1114 ≥14 358-390 45-49 100 212
N50M 1.40-1.45 14.0-14.5 ≥1043 ≥13.1 ≥1114 ≥14 374-406 47-51 100 212
N52M 1.42-1.48 14.2-14.8 ≥1059 ≥13.3 ≥1114 ≥14 390-422 49-53 100 212
H N35H 1.17-1.24 11.7-12.4 ≥876 ≥11 ≥1350 ≥17 263-295 33-37 120 248
N38H 1.22-1.30 12.2-13.0 ≥915 ≥11.5 ≥1350 ≥17 287-318 36-40 120 248
N40H 1.26-1.32 12.6-13.2 ≥939 ≥11.8 ≥1350 ≥17 302-334 38-42 120 248
N42H 1.29-1.35 12.9-13.5 ≥963 ≥12.1 ≥1350 ≥17 318-350 40-44 120 248
N45H 1.31-1.37 13.1-13.7 ≥979 ≥12.3 ≥1350 ≥17 335-366 42-46 120 248
N48H 1.37-1.43 13.7-14.3 ≥1011 ≥12.7 ≥1274 ≥16 358-390 45-49 120 248
N50H 1.40-1.45 14.0-14.5 ≥1027 ≥12.9 ≥1274 ≥16 374-406 47-51 120 248
SH N33SH 1.14-1.21 11.4-12.1 ≥852 ≥10.7 ≥1592 ≥20 247-279 31-35 150 302
N35SH 1.17-1.24 11.7-12.4 ≥876 ≥11 ≥1592 ≥20 263-295 33-37 150 302
N38SH 1.22-1.29 12.2-12.9 ≥915 ≥11.5 ≥1592 ≥20 287-318 36-40 150 302
N40SH 1.26-1.32 12.6-13.2 ≥939 ≥11.8 ≥1592 ≥20 302-334 38-42 150 302
N42SH 1.29-1.35 12.9-13.5 ≥963 ≥12.1 ≥1592 ≥20 318-350 40-44 150 302
N45SH 1.32-1.38 13.2-13.8 ≥994 ≥12.5 ≥1592 ≥20 335-366 42-46 150 302
UH N30UH 1.08-1.16 10.8-11.6 ≥812 ≥10.2 ≥1990 ≥25 223-255 28-32 180 356
N33UH 1.14-1.21 11.4-12.1 ≥852 ≥10.7 ≥1990 ≥25 247-279 31-35 180 356
N35UH 1.17-1.24 11.7-12.4 ≥876 ≥11 ≥1990 ≥25 263-295 33-37 180 356
Ball Cock

A ballcock (also balltap or float valve) is a mechanism or machine for filling water tanks, such as those found in flush toilets, while avoiding overflow and (in the event of low water pressure) backflow. The modern ballcock was invented by José Antonio de Alzate y Ramírez, a Mexican priest and scientist, who described the device in 1790 in the Gaceta de Literatura Méxicana.[1] It consists of a valve connected to a hollow sealed float by means of a lever, mounted near the top of the tank. The float is often ball-shaped, hence the name ballcock. The valve is connected to the incoming water supply, and is opened and closed by the lever which has the float mounted on the end. When the water level rises, the float rises with it; once it rises to a pre-set level, the mechanism forces the lever to close the valve and shut off the water flow. This is an example of negative feedback and of proportional control.

Ball Cock, Brass Ball Bibcock, Ballcock Valve, Toilet Ballcock Valve

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