Product Name: Strong Permanent Neodymium/NdFeB Magnet /Strong NdFeB Ring Magnet for Motor Model NO.: NdFeB magnet Grade: N52 Coating: Nickel Shape: Disc Application: Electronic Products, Speaker Magnet, Industrial Magnet, Jewelry Magnet, Solenoid, Motor Magnet Certification: ISO9001, RoHS, Reach, SGS,Iatf16949 Material: NdFeB Province: Zhejiang Trademark: SPNER Transport Package: CTN/Pallet Origin: China HS Code: 8505111000 Product Description I. Anisotropic sintered Neodymium multipole ringsNeodymium magnet is mainly made of Neodymium, Iron and Boron. Neodymium magnet is offered in range of operation tem 80ºC to 220ºC. A sintered Neo magnet has high remanence, high coercive force, and is easily formed into various sizes and shapes. The magnet is suitable for being used in DC Motor, Brushless motor , Speaker, MRI and others.II. Features :Since NdFeB magnets easily corrode, it is often coated to protect against this. Traditional coatings are Nickel, Zinc, and Epoxy with other options available. Selection of a coating should be discussed early on in the design and application process.Sintered NdFeb canbe made in Arc, cylinder,ring and someirregular shape.TypeNdFeB magnet.ShapeProfessional in manufacturing ring magnet,arc/tile cylindricaland other shaped can be customizedSizeAs per customer's requirements.ApplicationWidelyusedinbrushless DCmotor,motorassemblies,Windgenerator,Magnetic separators, servo motor, DC motorGradeAll kind of grade withN35 - N52, 35M - 50M, 35H - 48H, 30SH - 45SH, 28UH - 40UH, 30EH - 35EH, 30AH - 33AH.MaterialRare earth Neodymium iron boron magnetIII. Neodymium sintered anisotropic multipole magnet rings :IV: Anisotropic NdFeB Specification:Magnetizing ParameterRangeToleranceAxialitycylindricityMultipole &oblique magnetizationOD20-75mm±0.05mm0.10.04ID15-68mmThickness2-7mmHeight5-50mmGradeN30-N48,30M-45M,30H-42H,30SH-40SH, 30UH-38UH, 28EH-35EHCoatingNiCuNi , Epoxy etc.ApplicationRobotics and industrial automatic production line etc. V: Physical properties of sintered NdFeBTypeparameterparameter valuesAuxiliary magnetic propertyTemperature Coefficient of residual induction(α(Br))/(%/K)-0.08~-0.12Intrinsic coercivity temperature coefficient (α(Hcj)/%/K)-0.42~-0.70Curie temperature(Tc)/K310~380Recovery permeability (μrec) [ - ]1.05Mechanical physical propertiesdensity/(g/cm3)7.50~7.70Dimension hardness (Hv)650Resistivity /(μΩ•m)1.4Compressive strength /MPa1050Tensile strength /MPa80Bending strength290Thermal conductivity/(W/(m•K) )6~8Young modulus/GPa160Coefficient of thermal expansion(Perpendicular to orientation)/(10-6/K)-1.5Coefficient of thermal expansion(Parallel to orientation)/(10-6/K)6.5VI: Sintered Neodymium magnet properties Magnetic properties of sintered NdFeB No.GradeResidual induction (Br)Intrinsic coercivity (Hcj)Induction coercivity (Hcb)Energy Product (BH)maxMaximum operating temperatureTkGskA/mkOekA/mkOekJ/m3MGOeºC1N351.17~1.2211.7~12.29551286810.9263~28733~36802N381.22~1.2712.2~12.79551289911.3287~31036~39803N401.25~1.3012.5~13.09551292311.6302~32638~41804N421.28~1.3412.8~13.49551292311.6318~34240~43805N451.33~1.3813.3~13.89551287611342~36643~46806N481.37~1.4313.7~14.39551289211.2366~39046~4980735M1.17~1.2211.7~12.211141486810.9263~28733~36100838M1.22~1.2712.2~12.711141489911.3287~31036~39100945M1.33~1.3813.3~13.811141499512.5342~36643~461001048M1.37~1.4313.7~14.3111414101912.8358~39046~491001150M1.39~1.4513.9~14.5111413103513374~40647~511001233H1.13~1.1811.3~11.813531783610.5247~27031~341201335H1.17~1.2211.7~12.213531786810.9263~28733~361201438H1.22~1.2712.2~12.713531789911.3287~31036~391201540H1.25~1.3012.5~13.013531792311.6302~32638~411201642H1.28~1.3412.8~13.413531795512318~34240~431201745H1.33~1.3813.1~13.813531796312.1334~35843~461201848H1.37~1.4313.7~14.313531697112.2342~36645~491201933SH1.13~1.1811.3~11.815922084410.6247~27031~341502035SH1.17~1.2211.7~12.215922087611263~28733~361502138SH1.22~1.2712.2~12.715922090711.4287~31036~391502240SH1.25~1.3012.5~13.015922093911.8302~32638~411502342SH1.28~1.3412.8~13.415922097112.2318~34240~431502445SH1.32~1.3813.2~13.815921999512.3342~36643~461502548SH1.36~1.4213.6~14.215121999512.5358~39045~491502635UH1.17~1.2211.7~12.219902586010.8263~28733~361802738UH1.22~1.2712.2~12.719902587611287~31036~391802840UH1.26~1.3012.6~13.019112491511.5302~32638~411802942UH1.30~1.3513.0~13.519112497112.2310~34239~431803030EH1.08~1.1410.8~11.423883081210.2223~25428~322003133EH1.13~1.1811.3~11.823883082010.3247~27031~342003335EH1.17~1.2211.7~12.223883083610.5263~28733~362003438EH1.22~1.2712.2~12.723883091511.5279~31035~39200VII: Description:1.Q:Why we focus on producing ring magnet? A:Because it's more stable than magnetic tile which used in motor.2.Q:What's the mean of Anisotropic? A:Anisotropic ferrite magnets are different, they are all oriented in the manufacturing direction, and should be magnetized in the direction of orientation.3.Q:Magnetizing direction? A:At your request.VIII. Buyer Guide:We will help you with your order. Usually we ask for the following information.1)Product material,size, grade, coating, quantities required. etc..if available, a sketch or drawing with dimensions and tolerances. 2) Delivered magnetized or unmagnetized? Magnetization direction?3) Information on what you want to use the magnet for?Wish our products will be helpful for your business.Welcome and abroad patronage, guidance, to join hands in creating brilliant !