Super Quality Ring Magnet with four counter sunk hole manufacturers and suppliers in China

Model:	SR-N004
Min. Order:	5000 Piece/Pieces
Payment Terms:	T/T
Place of Origin:	Zhejiang, China (Mainland)
Means of Transport:	Ocean, Air
Production Capacity:	2000tons per year
Packing:	standard exporting...

Delivery Date:	25 days after...	Origin:	China
Trademark:	sunrise	Serial/Model NO.:	SR-N004
Standard:	SGS TESTING	Coating:	NiCuNi,Zn and Epoxy...
Shape:	Ring/Round

product: Super Quality Ring Magnet with four counter sunk hole

Neodymium Iron Boron (NdFeB) magnets, the most powerful permanent magnets available today, possess high energy up to 52MGOe and wonderful coercive force. As the third generation of Rare Earth magnet, NdFeB magnets are less brittle than SmCo, and the cost is much more resonable.

Sintered NdFeB Magnets are prone to corrosion in humid environments. So they usually need surface treatment according to customer's requirements to protect magnet. We can offer the plating included: Ni, Zn, Ni-Cu-Ni, Silver, Gold, Passivation, Epoxy Resin, etc.

Sintered NdFeB magnets are widely used in DC motors, linear motors, loud speakers, MRI, medical apparatus, transmission machine, lifting machine, and so on.

1. ProcessFlow:

Raw Material------Mixing-----Melting-----Powder-----Pressing-----Sintering----Magnetic Testing-----Cutting & Grinding-----Coating-----Inspection-----Packing and shipping

2. It can be easily formed into various sizes.

3. Smaller size and lighter weight in designing devices

4. Grade: N35-N52, 33M-50M, 30H-48H, 30SH-45SH, 30UH-40UH, 28EH-38EH, 30AH-33AH.

5.High energy range from 30MGOe to 53MGOe with wonderful coercive force
6. For most applications, coating or plating is recommended.

7. Coatings: Ni, Zn, gold, copper, epoxy, chemical, parylene and so on.

8. Advantages:
     a) High energy
     b) Very high Hc and Hci output
     c) More economical than SmCo
     d) Wonderful performance at ambient temperature

9. Disadvantages:
     a) Working temperature is below 220°C.
     b) Prone to oxidation than other magnet alloys
10. Applications: Widly used in industrial areas and Micro products, such as Motor, sensors,  loudspeaker, windmill, Auto, National defence, Speaker, Computer, Biology project, Medical treatment, Instrument and Meter etc.

Magnetic Characteristics And Physical Properties of Sintered Nd-Fe-B
Charactreistic	Remanence	Coerciv Force	Intrinsic Coercive	Max Enery Product	Maximum working
Grade	Br mb(KG)	hcb Koe(KA/m)	iHC Koe(KA/m)	(BH) max	temperature
Grade	Br mb(KG)	hcb Koe(KA/m)	iHC Koe(KA/m)	KJ/m²(MGOe)	Tw°C
N35	1170-1210	≥10.8 (≥860)	≥12 (≥955)	263-287(33-36)	80
N38	1210-1250	≥10.8 (≥860)	≥12 (≥955)	287-310(36-39)	80
N40	1250-1280	≥11.6 (≥923)	≥12 (≥955)	302-326(38-41)	80
N42	1280-1320	≥11.6 (≥923)	≥12 (≥955)	318-342(40-43)	80
N45	1320-1380	≥11.0 (≥876)	≥12 (≥955)	342-366(43-46)	80
N48	1380-1420	≥10.5 (≥835)	≥12 (≥955)	366-390(46-49)	80
N50	1380-1450	≥10.5 (≥835)	≥11 (≥955)	374-406(47-51)	80
N52	1430-1480	≥10.8 (≥860)	≥11 (≥876)	398-422(50-53)	80
35M	1170-1210	≥10.8 (≥860)	≥14 (≥1114)	263-287(33-36)	100
38M	1210-1250	≥11.0 (≥876)	≥14 (≥1114)	287-310(36-39)	100
40M	1250-1280	≥11.4 (≥907)	≥14 (≥1114)	302-326(38-41)	100
42M	1280-1320	≥11.6 (≥923)	≥14 (≥1114)	318-342(40-43)	100
45M	1320-1380	≥11.8 (≥939)	≥14 (≥1114)	342-366(43-46)	100
48M	1360-1400	≥11.8 (≥939)	≥14 (≥1114)	366-390(46-49)	100
50M	1400-1450	≥13.0 (≥1033)	≥14 (≥1114)	382-406(48-51)	100
33H	1130-1170	≥10.6 (≥844)	≥17 (≥1353)	247-263(31-33)	120
35H	1170-1210	≥11.0 (≥876)	≥17 (≥1353)	263-287(33-36)	120
38H	1210-1250	≥11.2 (≥890)	≥17 (≥1353)	287-310(36-39)	120
40H	1250-1280	≥11.5 (≥915)	≥17 (≥1353)	302-326(38-41)	120
42H	1280-1320	≥12.0 (≥955)	≥17 (≥1353)	318-342(40-43)	120
45H	1320-1380	≥12.0 (≥955)	≥17 (≥1353)	335-366(42-46)	120
46H	1330-1380	≥12.2 (≥972)	≥16 (≥1274)	350-374(44-47)	120
48H	1360-1430	≥12.5 (≥995)	≥16 (≥1274)	366-390(46-49)	120
33SH	1130-1170	≥10.6 (≥844)	≥20 (≥1672)	247-263(31-33)	150
35SH	1170-1210	≥11.0 (≥876)	≥20 (≥1672)	263-287(33-36)	150
38SH	1210-1250	≥11.4 (≥907)	≥20 (≥1672)	287-310(36-39)	150
40SH	1250-1280	≥11.8 (≥939)	≥20 (≥1672)	302-326(38-41)	150
42SH	1280-1320	≥11.8 (≥939)	≥20 (≥1672)	320-342(40-43)	150
45SH	1320-1380	≥12.6 (≥1003)	≥20 (≥1592)	342-366(43-46)	150
33UH	1130-1170	≥10.7 (≥852)	≥25 (≥1990)	247-263(31-33)	180
35UH	1170-1210	≥10.7 (≥852)	≥25 (≥1990)	263-287(33-36)	180
38UH	1210-1250	≥11.4 (≥907)	≥25 (≥1990)	287-310(36-39)	180
40UH	1250-1280	≥11.4 (≥907)	≥25 (≥1990)	302-326(38-41)	180
30EH	1080-1130	≥9.5 (≥756)	≥30 (≥2388)	223-247(28-31)	200
33EH	1130-1170	≥10.2 (≥812)	≥30 (≥2388)	247-263(31-33)	200
35EH	1170-1210	≥10.2 (≥812)	≥30 (≥2388)	263-287(33-36)	200
38EH	1210-1250	≥11.4 (≥907)	≥30 (≥2388)	287-310(36-39)	200
30AH	1080-1130	≥10.2 (≥812)	≥35 (≥2785)	223-255(28-32)	220
33AH	1120-1170	≥10.2 (≥812)	≥35 (≥2785)	247-271(31-34)	220