NdFeB Block Magnets 20 * 15 * 3mm , N42 Grade Super Powerful Magnets For Sensors

 

Block20*15*3mm NdFeB Permanent Magnets N42 Grade Used For Sensors

 

Neodymium magnets (Nd-Fe-B) are composed of neodymium, iron, boron and a few transition metals. These magnets are extremely strong for their small size, metallic in appearance and found in simple shapes such as rings, blocks and discs. Their max energy product can be 35MGOe~50MGOe , Neodymium magnets are developed rapidly and applied widely due to their perfect characteristic, rich raw material resource and reasonable price.

 

★ How to shield the magnetic field?

Normally, we use the iron sheet to shield the magnetic field. The iron sheet must be thick enough, otherwise, its saturated magnetization will only shield parts of magnetic field. So it’s very necessary and important to choose the high permeability materials and its suitable size and dimensions, so that the magnetic leakage can be less.

 

Applications

• Sensors
• Microphone assemblies
• Servo motors
• DC motors (automotive starters) and other motors
• Computer rigid disc drives
• magnetic resonance imaging
• Various holders
• Meters
• Odometer

 

Specification

 

Material	NdFeB
Grade	35SH
Shape	Rectanglar
Plating	Ni
Magnetized	Through the thickness
Export port	Xiamen China

 

 

The specification(dimension) of magnet can be customized according to client's requests and design

 

Magnetic Property

 

Grade	Br mt(KG)	Hcb Koe(KA/m)	iHc Koe(KA/m)	(BH)max	TW℃
				KJ/m3 (MGOe)
30SH	1080-1130(10.8-11.3)	≧10.0(≧796)	≧21(≧1672)	223-247(28-31)	150
33SH	1130-1170(11.3-11.7)	≧10.6(≧844)	≧21(≧1672)	247-263(31-33)	150
35SH	1170-1210(11.7-12.1)	≧11.0(≧876)	≧21(≧1672)	263-287(33-36)	150
38SH	1210-1250(12.1-12.5)	≧11.4(≧907)	≧21(≧1672)	287-310(36-39)	150
40SH	1250-1280(12.5-12.8)	≧11.8(≧939)	≧21(≧1672)	302-326(38-41)	150
42SH	1280-1320(12.8-13.2)	≧11.8(≧939)	≧21(≧1672)	320-343(40-43)	150
N50	1380-1450(13.8-14.5)	≧10.5(≧835)	≧12(≧955)	474-406(47-51)	80