ndfeb rare earh rod magnet

1. Cylinder Magnet or Rod magnet is one popular shape of Rare earth magnet and perment magnet.
It is always manufactured via Cutting,Slicing,Centerless grinding and so on .
2. Cylinder magnets have the following important factors such as ,Diameter and Heightetc

3. The high performance neodymium magnets that have a magnetic length which is longer than their diameters are wide.
4. Neodymium rods will give a deeper magnetic field than a circular disc with the same diameter due to the longer lengths.They are used where a small size and maximum power are needed. Neodymium Magnets exert very high forces and can attract each other through unbelievably large distances making them very popular for a wide range of applications including scientific experiments,packaging,display, furniture and even musical instruments. They also have an immense and unbeatable resistance to being demagnetised, making them ideal for repulsion applications as well as attractive applications.
5. The magnets are triple coated(NiCuNi) for maximum protection against corrosion.Standard manufacturing tolerance is +/- 0.1mm on all dimension.

Magnetic Characteristics And Physical Properties of Sintered NdFeB
Properties	Remanence	Coercive Force	Intrinsic Coercive Force	Max Energy Product	Max Working Temp
	Br	Hcb	Hcj	(BH)max	Tw
Grade	mT(KGs)	KA/m (KGs)	KA/m (KOe)	KJ/m 3 ( MGOe )	℃
N-30	1080-1130	≥ 796	≥ 955	223-247	≤ 80
	(10.8-11.3)	( ≥ 10)	( ≥ 12)	(28-31)
N-33	1130-1180	≥ 836	≥ 955	247-270	≤ 80
	(11.3-11.8)	( ≥ 10.5)	( ≥ 12)	(31-34)
N-35	1170-1220	≥ 868	≥ 955	263-287	≤ 80
	(11.7-12.2)	( ≥ 10.9)	( ≥ 12)	(33-36)
N-38	1220-1250	≥ 899	≥ 955	287-310	≤ 80
	(12.2-12.5)	( ≥ 11.3)	( ≥ 12)	(36-39)
N-40	1250-1280	≥ 923	≥ 955	302-326	≤ 80
	(12.5-12.8)	( ≥ 11.6)	( ≥ 12)	(38-41)
N-42	1280-1320	≥ 923	≥ 955	318-342	≤ 80
	(12.8-13.2)	( ≥ 11.6)	( ≥ 12)	(40-43)
N-45	1320-1380	≥ 876	≥ 955	342-366	≤ 80
	(13.2-13.8)	( ≥ 11.0)	( ≥ 12)	(43-46)
N-48	1380-1420	≥ 836	≥ 876	366-390	≤ 80
	(13.8-14.2)	( ≥ 10.5)	( ≥ 11)	(46-49)
N-50	1400-1450	≥ 860	≥ 876	382-406	≤ 80
	(14.0-14.5)	( ≥ 10.8)	( ≥ 11)	(48-51)
30M	1080-1130	≥ 796	≥ 1114	223-247	≤ 100
	(10.8-11.3)	( ≥ 10)	( ≥ 14)	(28-31)
33M	1130-1180	≥ 836	≥ 1114	247-270	≤ 100
	(11.3-11.8)	( ≥ 10.5)	( ≥ 14)	(31-34)
35M	1170-1220	≥ 868	≥ 1114	263-287	≤ 100
	(11.7-12.2)	( ≥ 10.9)	( ≥ 14)	(33-36)
38M	1220-1250	≥ 899	≥ 1114	287-310	≤ 100
	(12.2-12.5)	( ≥ 11.3)	( ≥ 14)	(36-39)
40M	1250-1280	≥ 923	≥ 1114	302-326	≤ 100
	(12.5-12.8)	( ≥ 11.6)	( ≥ 14)	(38-41)
42M	1280-1320	≥ 955	≥ 1114	318-342	≤ 100
	12.8-13.2	( ≥ 12.0)	( ≥ 14)	(40-43)
45M	1320-1380	≥ 995	≥ 1114	342-366	≤ 100
	(13.2-13.8)	( ≥ 12.5)	( ≥ 14)	(43-46)
48M	1360-1430	≥ 1027	≥ 1114	366-390	≤ 100
	(13.6-14.3)	( ≥ 12.9)	( ≥ 14)	(46-49)
50M	1400-1450	≥ 1033	≥ 1114	382-406	≤ 100
	(14.0-14.5)	( ≥ 13.0)	( ≥ 14)	(48-51)
30H	1080-1130	≥ 796	≥ 1353	223-247	≤ 120
	(10.8-11.3)	( ≥ 10)	( ≥ 17)	(28-31)
33H	1130-1180	≥ 836	≥ 1353	247-271	≤ 120
	(11.3-11.8)	( ≥ 10.5)	( ≥ 17)	(31-34)
35H	1170-1220	≥ 868	≥ 1353	263-287	≤ 120
	(11.7-12.2)	( ≥ 10.9)	( ≥ 17)	(33-36)
38H	1220-1250	≥ 899	≥ 1353	287-310	≤ 120
	(12.2-12.5)	( ≥ 11.3)	( ≥ 17)	(36-39)
40H	1250-1280	≥ 923	≥ 1353	302-326	≤ 120
	(12.5-12.8)	( ≥ 11.6)	( ≥ 17)	(38-41)
42H	1280-1320	≥ 955	≥ 1353	318-342	≤ 120
	(12.8-13.2)	( ≥ 12.0)	( ≥ 17)	(40-43)
45H	1320-1380	≥ 963	≥ 1353	342-366	≤ 120
	(13.2-13.8)	( ≥ 12.1)	( ≥ 17)	(43-46)
48H	1370-1430	≥ 995	≥ 1274	366-390	≤ 120
	(13.7-14.3)	( ≥ 12.5)	( ≥ 16)	(46-49)
30SH	1080-1130	≥ 804	≥ 1592	223-247	≤ 150
	(10.8-11.3)	( ≥ 10.1)	( ≥ 20)	(28-31)
33SH	1130-1170	≥ 844	≥ 1592	247-271	≤ 150
	(11.3-11.7)	≥ 10.6	( ≥ 20)	(31-34)
35SH	1170-1220	≥ 876	≥ 1592	263-287	≤ 150
	(11.7-12.2)	( ≥ 11.0)	( ≥ 20)	(33-36)
38SH	1220-1250	≥ 907	≥ 1592	287-310	≤ 150
	(12.2-12.5)	( ≥ 11.4)	( ≥ 20)	(36-39)
40SH	1250-1280	≥ 939	≥ 1592	302-326	≤ 150
	(12.5-12.8)	( ≥ 11.8)	( ≥ 20)	(38-41)
42SH	1280-1320	≥ 995	≥ 1592	318-342	≤ 150
	(12.8-13.2)	( ≥ 12.5)	( ≥ 20)	(40-43)
45SH	1320-1380	≥ 1003	≥ 1592	342-366	≤ 150
	(13.2-13.8)	( ≥ 12.6)	( ≥ 20)	(43-46)
28UH	1020-1080	≥ 764	≥ 1990	207-231	≤ 180
	(10.2-10.8)	( ≥ 9.6)	( ≥ 25)	(26-29)
30UH	1080-1130	≥ 812	≥ 1990	223-247	≤ 180
	(10.8-11.3)	( ≥ 10.2)	( ≥ 25)	(28-31)
33UH	1130-1170	≥ 852	≥ 1990	247-271	≤ 180
	(11.3-11.7)	( ≥ 10.7)	( ≥ 25)	(31-34)
35UH	1180-1220	≥ 860	≥ 1990	263-287	≤ 180
	(11.8-12.2)	( ≥ 10.8)	( ≥ 25)	(33-36)
38UH	1220-1250	≥ 907	≥ 1990	287-310	≤ 180
	(12.2-12.5)	( ≥ 11.4)	( ≥ 25)	(36-39)
30EH	1080-1130	≥ 812	≥ 2388	223-247	≤ 200
	(10.8-11.3)	( ≥ 10.2)	( ≥ 30)	(28-31)
33EH	1130-1170	≥ 812	≥ 2388	247-271	≤ 200
	(11.3-11.7)	( ≥ 10.2)	( ≥ 30)	(31-34)
35EH	1170-1220	≥ 876	≥ 2388	263-287	≤ 200
	(11.7-12.2)	( ≥ 11.0)	( ≥ 30)	(33-36)
30AH	1080-1130	≥ 812	≥ 2785	223-247	≤ 240
	(10.8-11.3)	( ≥ 10.2)	( ≥ 35)	(28-31)
33AH	1130-1170	≥ 812	≥ 2785	247-271	≤ 240
	(11.3-11.7)	( ≥ 10.2)	( ≥ 35)	31-34

NOTES:

The above-mentioned data of magnetic parameters and physical properties ars given at room temperature.

The maximum service temperature of magnet is changeable due to the ratio length and diameter and

Environmental factors.

Density: 7.4~7.6g/cm 3 ; α Br:-0.09~0.13%/ ℃, β Hcj: -0.50~0.80%/ ℃; Hv:600.

                                                 The demagnetized curve of sintered Neodymium magnet