customized large ring Sintered neodymium magnets manufacturers and suppliers in China

Payment & Shipping Terms		Supply Capacity
Payment Terms:	L/C, D/P, D/A, T/T	Production Capacity:	10000
Min. Order:	1000 Piece/Pieces	Packing:	carton
Means of Transport:	Ocean, Air, Land	Delivery Date:	25

customized large ring Sintered neodymium magnets

Directions of Magnetization

a. Thickness Magnetized

b. Axially Magnetized

c. Diametrally Magnetized

d. Multi-poles magnetized

e. Radial Magnetized

f. Customized specific requirements magnetized

1. Materials

Sintered Neodymium-Iron-Boron

2. Grades

Range: N35-N52; N35M-N50M; N35H-N48H, N35SH-N45SH; N30UH-N40UH,N30EH-N38EH

-The grade like N48-N52 could meet your requirements on strong power

-Standard one like N35 or N40 is okay for your normal applications

3. Shapes

Others available: Block, Ring, Cylinder, Disc, Customized shape as your design.

4. Size

Length x Width x Thickness You could choose freely according to your plan.

5. Coatings

Others available: Nickel, Zinc, Gold, Silver, Epoxy, Parylene, etc.

6. Orientation

Through the direction of thickness or according to your needs.

7. Quality

Our expert quality control department ensures magnets are high quality.

8. Applications

Sensors, motors, rotors, wind turbine,wind generators, etc

customized large ring Sintered neodymium magnets

Magnet Information
Description	Sintered NdFeB Magnet
Material:	Neodymium-Iron-Boron
Shape:	Ring, Thin-wall ring, Disc, Cylinder, Segment,Contersunk, Tapezoid, Irregular Shape…With special shape requirement, we have own R & D dept. to support
Coating:	Ni-Cu-Ni, Nickel, Zn, Gold, Cr, Silver, Copper, Anti-Rust Oil, Spray Rolling, Black, Grey Epoxy, PTFE, Parylene, and so on.
Magnetic Performance Sheet
Grade	Remanence(Br)	Coercivity(BH) max kJ/m3	Temperature
	mT	KJ/M3	(Tw°C)
	(kGs)	MGOe
N35-N52	1170-1480	263-422	80 °C
N35-N52	(10.3-14.8)	(33-53)	80 °C
35M-50M	1080-1450	263-406	100 °C
35M-50M	(10.8-14.5)	(33-51)	100 °C
35H-48H	1170-1430	(263-390)	120 °C
35H-48H	(11.7-14.3)	(33-49)	120 °C
35SH-45SH	1130-1380	247-366	150 °C
35SH-45SH	(11.3-13.8)	(33-46)	150 °C
30UH-40UH	1080-1280	263-326	180 °C
30UH-40UH	(10.8-12.8)	(33-41)	180 °C
30EH-38EH	1080-1250	223-310	200 °C
30EH-38EH	(10.8-12.5)	(28-39)	200 °C
Magnet Coating
Coating	Thickness (Microns)	Color	Resistance
Anti-Rust Oil	1	Trancparency	Temporary Protection
Spray Rolling	10-30	Common Black	24 hours of salt spray test
Zinc	5-10	Bright Blue	24 hours of salt spray test
Nickle	10-15	Bright Silver	48 hours of salt spray test
Ni+Cu	10-20	Gold	Temporary Protection
Ni+Cu+Epoxy	15-30	Grey, Black	Excellent Against Humidity & Salt Spray
Epoxy	15-25	Grey, Black	72 hours of salt spray test
Parylene	10-30	Trancparency	200 hours of Salt Spray. Superior Against Solvents, Gases, Fungi and Bacteria

customized large ring Sintered neodymium magnets

Grade	corrosion stable	corrosion stable & high resist of temp.	Remanence		Normal coercivity		Intrinsic coercivity				Max. energy product		Max. operating temp.
	specify as: grade+"/S"	specify as: grade+"/ST"	Br		Hcb		Hcj				BH(max)
			mT		kA/m		kA/m (min)				kJ/m3
			min	typ	min	typ	20 ℃	120℃ for "/ST"	150℃ for "/ST"	180℃ for "/ST"	min	typ
N 35			1170	1220	870	920	955				263	279	80
N 38			1220	1260	870	920	955				279	303	80
N 40			1260	1300	870	920	955				303	318	80
N 42			1300	1330	870	920	955				318	334	80
N 45			1330	1370	900	930	955				334	358	80
N 48			1370	1410	900	930	955				358	382	80
N 50			1410	1440	830	850	875				382	398	70
N 52			1440	1470	830	850	875				398	414	70
N 33 M			1140	1170	830	880	1114				239	263	100
N 35 M			1170	1220	870	920	1114				263	279	100
N 38 M			1220	1260	900	950	1114				279	303	100
N 40 M			1260	1300	930	980	1114				303	318	100
N 42 M			1300	1330	950	1000	1114				318	334	100
N 45 M			1330	1370	980	1030	1114				334	358	100
N 48 M			1370	1410	1010	1060	1114				358	382	90
N 50 M			1410	1440	1030	1080	1114				382	398	90
N 30 H			1080	1140	810	860	1353				223	239	120
N 33 H			1140	1170	830	880	1353				239	263	120
N 35 H	35 H/S		1170	1220	870	920	1353				263	279	120
N 38 H	38 H/S	38 H/ST	1220	1260	900	950	1353	500			279	303	120
N 40 H	40 H/S	40 H/ST	1260	1300	930	980	1353	500			303	318	120
N 42 H	42 H/S	40 H/ST	1300	1330	950	1000	1353	500			318	334	120
N 44 H	44 H/S	44 H/ST	1330	1360	970	1020	1353	500			334	350	120
N 46 H	46 H/S	46 H/ST	1360	1380	980	1040	1353	500			350	366	120
N 48 H	48 H/S		1380	1410	1010	1060	1353				366	382	120
N50H			1400	1440	830	850	1353				380	390	120
N 30 SH			1080	1140	810	860	1592				223	239	150
N 33 SH			1140	1170	830	880	1592				239	263	150
N 35 SH	35 SH/S	35 SH/ST	1170	1220	870	920	1592		500		263	279	150
N 38 SH	38 SH/S	38 SH/ST	1220	1260	900	950	1592		500		279	303	150
N 40 SH	40 SH/S	40 SH/ST	1260	1300	930	980	1592		500		303	318	150
N 42 SH	42 SH/S	42 SH/ST	1300	1330	950	1000	1592		500		318	334	150
N 44 SH	44 SH/S	44 SH/ST	1330	1360	970	1020	1592		500		334	350	150
N 46 SH	46 SH/S		1360	1380	980	1040	1592				350	366	150
N 28 UH			1040	1080	770	810	1989				199	223	180
N 30 UH	30 UH/S	30 UH/ST	1080	1140	810	860	1989		720		223	239	180
N 33 UH	33 UH/S	33 UH/ST	1140	1170	830	880	1989		720		239	263	180
N 35 UH	35 UH/S	35 UH/ST	1170	1220	870	920	1989		720		263	279	180
N 38 UH	38 UH/S	38 UH/ST	1220	1260	900	950	1989		720		279	303	180
N 40 UH	40 UH/S		1260	1300	930	980	1989				303	318	180
N 42 UH	42 UH/S		1300	1330	950	1000	1989				318	334	180
N 28 EH			1040	1080	770	810	2387				199	223	200
N 30 EH	30 EH/S	30 EH/ST	1080	1140	810	860	2387		950		223	239	200
N 33 EH	33 EH/S	33 EH/ST	1140	1170	830	880	2387		950		239	263	200
N 35 EH	35 EH/S	35 EH/ST	1170	1220	870	920	2387		950		263	279	200
N 38 EH	38 EH/S		1220	1260	900	950	2387				279	303	200
N 25 AH	25 AH/S	25 AH/ST	970	1020	730	770	2787		1200	900	180	200	220
N 28 AH	28 AH/S	28 AH/ST	1040	1080	770	810	2787		1200	900	203	218	220
N 30 AH	30 AH/S	30 AH/ST	1080	1140	810	860	2787		1200	900	220	250	220
N 25 BH	25 BH/S	25 BH/ST	950	1000	710	750	3000		1300	950	170	190	230

customized large ring Sintered neodymium magnets

Delivery

All available shipping ways could be applied, by courier, by air or by sea.

Appointed shipping company or our own forwarders all could be used in shipment.

Full-way tracking the cargos for you before the goods arrive.

Buyer's Guide

In order to quote you the best price quickly, please provide the following information:

1.Product size,grade,coating,etc.

2.Order quantity;

3.Attached the drawings if customized
4.Any special packing or other requirements

Our advantage

1. Fast reply: all your enquiry will be replied within 24 hours;

2. Reasonable price: we are direct manufacturer and able to offer better price;

3. Good quality: we are experienced in quality control;

4. Fast delivery time:7-20 days

FAQ:

1. 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.

2. 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.

3. 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).

4. 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.

5. What is the difference between the different platings and coatings?

Choosing different coatings does not affect the magnetic strength or performance of the magnet, except for our Plastic and Rubber Coated Magnets. The preferred coating is dictated by preference or intended application. More detailed specifications can be found on our Specs page.

♦ Nickel is the most common choice for plating neodymium magnets. It is actually a triple plating of nickel-copper-

nickel. It has a shiny silver finish and has good resistance to corrosion in many applications. It is not waterproof.

♦ Black nickel has a shiny appearance in a charcoal or gunmetal color. A black dye is added to the final nickel plating

process of the triple plating of nickelcopperblack nickel.

NOTE: It does not appear completely black like epoxy coatings. It is also still shiny, much like plain nickel plated magnets.

♦ Zinc has a dull gray/bluish finish, that is more susceptible to corrosion than nickel. Zinc can leave a black residue on

hands and other items.

♦ Epoxy is basically a plastic coating that is more corrosion resistant as long as the coating is intact. It is easily scratched.

From our experience, it is the least durable of the available coatings.

♦ Gold plating is applied over the top of standard nickel plating. Gold plated magnets have the same characteristics as

nickel plated ones, but with a gold finish

Category: Sintered ring ndfeb magnet

Place of Origin:	Zhejiang,China (Mainland)
Application:	Industrial Magnet
Shape:	Others
Type:	Permanent
Composite:	NdFeB Magnet
Brand Name:	HONY
Tolerance:	+/-0.05mm
Size:	Various
Shape:	ring
Coating Thickness:	10-15
Ring magnets for sale:	Strong magnet
Working temperature:	High up to 200℃
Grade:	N,M,H,SH,UH,EH

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customized large ring Sintered neodymium magnets

Product Description