N42 Ring Countersunk Hole Neodymium Magnet

Model NO.: N42
MOQ: 100PCS
Magnetism Dircetion: Thickness
Trademark: hzdunben
Transport Package: Standard Export Package with 32X24X26cm
Specification: By Drawing
Origin: Hangzhou
HS Code: 85051190
1.My promise 
a:100% new raw material (we promise all material is new,no second material)
b:100% most competitive price (I will try my best to get your ideal price)
c:100% shipment on time (i will iform u if any delay)
d:100% perfect service after sale (U can contact me any time if there is any questions after u get magnets)   

2.Neodymium Magnet
Neodymium( NdFeB )magnets are the strongest type of rare earth magnet commercially available and are manufactured in a wide range of shapes, sizes and grades. 
 
3. Neodymium Magnet Basic information 
Material Sintered Neodymium-Iron-Boron (NdFeB)
Size Various kinds or according to customers' request
Shape Disc/ Customzsed  (block,disc,Cylinder, Bar, Ring,
Countersunk, Segment,hook,cup, Trapezoid, Irregular shapes ,etc)
Performance N52/Customised (N33 N35 N38 N40 N42 N45 N48 N50 N52 …...)
Coating Ni-Cu-Ni, Nickel / Customised (Zn,Ni-Cu-Ni,Ni,Gold, Silver, Copper, Epoxy, Chrome, etc)
Size tolerance ±0.05mm for diamater/thickness, ±0.1mm for width/length
Magnetization Thickness Magnetized, Axially Magnetized, Diametrally Magnetized, Multi-poles magnetized, Radial Magnetized. (Customzied specific requirements magnetized)
Max. Working 
Temperature		 Grade Max. Operating Temperatures
N35-N52 80°C (176°F)
33M- 48M 100°C (212°F)
33H-48H 120°C (248°F)
30SH-45SH 150°C (302°F)
30UH-40UH 180°C (356°F)
28EH-38EH 200°C (392°F)
28AH-35AH 220°C (428°F)
Applications Neodymium(NdFeB) Magnet are widely used in many fields, such as motors, 
sensors, microphones, wind turbines, wind generators,  printer, switchboard,packing box , 
loudspeakers, magnetic separation, magnetic hooks, magnetic holder, magnetic chuck, ect.
 
4.Neodymium Magnet Surface coatings
Surface Coating Thickness
(Microns)		 Color Resistance
Passivation   0-1 Silver Grey Temporary Protection
Nickel Ni+Ni 10-20 Bright Silver Excellent against Humidity
Ni+Cu+Ni
Zinc Zn 8-20 Bright Blue Good Against Salt Spray
C-Zn Shinny Color Excellent Against Salt Spray
Tin Ni+Cu+Sn 15-20 Silver Superior Against Humidity
Gold Ni+Cu+Au 10-20 Gold Superior Against Humidity
Copper Ni+Cu 10-20 Gold Temporary Protection
Epoxy Epoxy 15-25 Black, Red, Grey Excellent Against Humidity & Salt Spray
Ni+Cu+Epoxy
Zn+Epoxy
Chemical Ni 10-20 Silver Grey Excellent Against Humidity
Parylene Parylene 5-20 Grey Excellent Against Humidity, Salt Spray. 
Superior Against Solvents, Gases, 
Fungi and Bacteria.

5.Neodymium Magnet package
a:32X24X26CM standard export package
b:G.W of each carton is no more than 13KG

6.Neodymium Magnet delivery time
a:5-7days for sample
b:20-25days for large quantity

7.Qucik facts about Dunben
·Was established in 2004, as trading company
·Factory was founded in 2010
·Specialized in developing and producing Bonded Magnet and NdFeB Magnet
·Have more than 100 employees (including 8 technicians and 15 salesman and 20 quality control)
·Annual sales in 2016 is around 3 millions, export amount is around 2 millions

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