Rare Earth Ring Magnets Neodymium Disc Countersunk Hole Magnets

• Customization: Available
• Application: Electronic Products, Speaker Magnet, Industrial Magnet, Jewelry Magnet, Motor Magnet
• Shape: Ring
• Model NO.: Neor110
• Coating: Nickel
• Grade: N33, N35, N38, N40, N42, N45, N48, N50, N52
• Tolerance: +/-0.05mm,+/-0.10mm
• Othe Coating: Zn(Cr3+), Nickel(Nicuni), Epoxy, Tin
• Certificate: ISO9001, RoHS, Reach, MSDS
• Delivery: Usually 20 Days After Deposit Paid
• Magnetizing: Axially Magnetized
• Name: Permanent Rare Earth NdFeB Neodymium Ring Magnet
• Other Application: Motors,Speakers,Electronics,Communications
• Transport Package: Inner Box, Foam Box and Outer Carton
• Specification: Customized
• Trademark: Xiaosheng
• Origin: China
• HS Code: 8505111000
• Production Capacity: 1500 Tons/Year

Product Description

Product Description

Manufacturing Process
Sintered Nd-Fe-B permanent magnet material is made by powder metallurgy process. The melted alloy is made into powder and pressed into pressed embryo in magnetic field. The pressed embryo is sintered in vacuum to achieve densification. In order to improve the coercivity of magnet, further heat treatment is usually required.

Size
There are usually several common shapes for these strong  Neodymium magnets, such as disc magnet, block magnet, ring magnet and arc magnet. Almost all products are customized per dimensions or drawings from customer.

Grade
Each type of product is divided into several grades according to the maximum magnetic energy product:
N35-N52,N35M-N50M,N30H-N48H,N30SH-N45SH,N28UH-N35UH,N28EH-N35EH

coating
There are usually Ni-Cu-Ni(Nickel), Zn and Epoxy coating etc. These coating can protect magnets from rust. 

Main Magnetic Properties
Including remanence (BR), magnetic polarization, coercivity (intrinsic coercivity) (Hcj), magnetic induction, coercivity (HCB), and maximum magnetic energy product ((BH) max) of permanent magnet materials.
 

Product Parameters

 

Name	Rare Earth Ring Magnets Neodymium Disc Countersunk Hole Magnets
Material	Neodymium, iron, Boron, other rare earth elements
Size	Custom made
Shape	Ring
Grade	N33-N52, N35M-N48M, N33H-N46H, N33SH-N44SH, N30UH-N38UH, N30EH-N35EH
Coating	Ni+Cu+Ni(Nickel); Zinc(Zn); Epoxy etc.
Magnetizing direction	Axially magnetized
Tolerance	±0.05mm/±0.10mm
Max. working temperature	80ºC-200ºC
Salt spray test	More than 48 hours
Production time	15-35 days
Min. order	US$1,000.00 if no stock
Terms	TT, LC per discussion
Certificate	ISO9001:2015, RoHS, REACH, MSDS
Brand	XIAOSHENG

Application Area
It is widely used in permanent magnet motor, loudspeaker, magnetic separator, computer disk driver, magnetic resonance imaging equipment, instruments, toys, packaging, hardware machinery, aerospace and other fields.


 

Magnetic Property Chart

NdFeB magnets magnetic property chart

Grade	Br		Hcb		Hcj		(BH)max		MAX.Working Temperature (TW) ºC
	T	KGs	KA/m	KOe	KA/m	KOe	KJ/m^3	MGOe
N35	1.18-1.23	11.8-12.3	≥868	≥10.9	≥955	≥12	263-287	33-36	≤80
N38	1.22-1.28	12.2-12.8	≥899	≥11.3	≥955	≥12	287-310	36-39	≤80
N40	1.26-1.31	12.6-13.1	≥923	≥11.6	≥955	≥12	302-326	38-41	≤80
N42	1.28-1.34	12.8-13.4	≥923	≥11.6	≥955	≥12	318-342	40-43	≤80
N45	1.33-1.38	13.3-13.8	≥876	≥11.0	≥955	≥12	342-366	43-46	≤80
N48	1.38-1.42	13.8-14.2	≥836	≥10.5	≥876	≥11	358-390	45-48	≤80
N50	1.40-1.45	14.0-14.5	≥836	≥10.5	≥876	≥11	382-406	48-51	≤80
N52	1.42-1.48	14.2-14.8	≥796	≥10.0	≥876	≥11	390-422	49-53	≤80
N35M	1.17-1.22	11.7-12.2	≥868	≥10.9	≥1114	≥14	263-287	33-36	≤100
N38M	1.22-1.25	12.2-12.5	≥899	≥11.3	≥1114	≥14	287-310	36-39	≤100
N40M	1.25-1.28	12.5-12.8	≥923	≥11.6	≥1114	≥14	302-326	38-41	≤100
N42M	1.28-1.32	12.8-13.2	≥955	≥12	≥1114	≥14	318-342	40-43	≤100
N45M	1.32-1.38	13.2-13.8	≥955	≥12.5	≥1114	≥14	342-366	43-46	≤100
N48M	1.36-1.43	13.6-14.3	≥1027	≥12.9	≥1114	≥14	366-390	46-49	≤100
N50M	1.40-1.45	14.-14.5	≥1033	≥13.0	≥1114	≥14	382-406	48-51	≤100
N35H	1.17-1.22	11.7-12.2	≥868	≥10.9	≥1353	≥17	263-287	33-36	≤120
N38H	1.22-1.25	12.2-12.5	≥899	≥11.3	≥1353	≥17	287-310	36-39	≤120
N40H	1.25-1.28	12.5-12.8	≥923	≥11.6	≥1353	≥17	302-326	38-41	≤120
N42H	1.28-1.32	12.8-13.2	≥955	≥12.0	≥1353	≥17	318-342	40-43	≤120
N45H	1.30-1.36	13.0-13.6	≥963	≥12.1	≥1353	≥17	342-366	43-46	≤120
N48H	1.37-1.43	13.7-14.3	≥955	≥12.5	≥1353	≥17	366-390	46-49	≤120
N33SH	1.13-1.17	11.3-11.7	≥844	≥10.6	≥1592	≥20	247-271	31-34	≤150
N35SH	1.17-1.22	11.7-12.2	≥876	≥11.0	≥1592	≥20	263-287	33-36	≤150
N38SH	1.22-1.25	12.2-12.5	≥907	≥11.4	≥1592	≥20	287-310	36-39	≤150
N40SH	1.25-1.28	12.5-12.8	≥939	≥11.8	≥1592	≥20	302-326	38-41	≤150
N42SH	1.28-1.32	12.8-13.2	≥939	≥11.8	≥1600	≥20	310-342	39-43	≤150
N45SH	1.31-1.36	13.1-13.6	≥955	≥12.0	≥1600	≥20	342-366	43-46	≤150
N28UH	1.02-1.08	10.2-10.8	≥764	≥9.60	≥1990	≥25	207-231	26-29	≤180
N30UH	1.08-1.13	10.8-11.3	≥812	≥10.2	≥1990	≥25	223-247	28-31	≤180
N33UH	1.13-1.17	11.3-11.7	≥852	≥10.7	≥1990	≥25	247-271	31-34	≤180
N35UH	1.18-1.22	11.8-12.2	≥860	≥10.8	≥1990	≥25	263-287	33-36	≤180
N38UH	1.22-1.25	12.2-12.5	≥876	≥11.0	≥1990	≥25	287-310	36-39	≤180
N28EH	1.04-1.09	10.4-10.9	≥780	≥9.80	≥2388	≥30	207-231	26-29	≤200
N30EH	1.08-1.13	10.8-11.3	≥812	≥10.2	≥2388	≥30	223-247	28-31	≤200
N33EH	1.13-1.17	11.3-11.7	≥836	≥10.5	≥2388	≥30	247-271	31-34	≤200
N35EH	1.17-1.22	11.7-12.2	≥876	≥11.0	≥2388	≥30	263-287	33-36	≤200
N28AH	1.03-1.09	10.3-10.9	≥780	≥9.80	≥2786	≥35	207-231	26-29	≤220
N30AH	1.08-1.13	10.8-11.3	≥812	≥10.2	≥2786	≥35	223-247	28-31	≤220

 

Production Workshop

Main Process flow:  raw material - smelting ingot/spinning belt - powder making - profiling - sintering - grinding - cutting - electroplating - finished product.

Main production equipment: smelting furnace, belt spinning furnace, jaw breaking machine, jet mill, compression molding machine, vacuum packaging machine, isostatic press, sintering furnace

Main machining equipment: centerless grinding, double-end grinding, flat grinding, slicer, double-sided grinding, wire cutting, bench drill, special-shaped grinding, etc.

Quality Control

Certifications

Customer Visit/Visit Customer

 

 

FAQ

1, Are you manufacturer or trader for these magnetic products?

We have been making these products over 10 years and we are one of the leading manufacturer in this field in China.

 

2, What is your capacity for these products?

Our annual capacity is over 1500 tons and this numbers will still be rising due to our good quality and cheap prices.

 

3. What are your strengths?
OEM/ODM NdFeB magnets & related magnetic assemblies.
 

4, What is your delivery time?

Usually 7-35 days, but it depends on production and stock situation.

 

5, Do you have minimum order request?

Yes, usually our minimum order is US$1,000.00 if no stock.

If you have any questions, please send us the following inquiry or chat us now. Usually we will reply you within 24 hours.