Gold Member Since 2015
Audited Supplier
Dongguan Cirun Electronics Co., Ltd.

Neodymium Magnet, Ring Magnet, Permanent Magnet manufacturer / supplier in China, offering 1/2" Od X 1/4" ID X 1/8" Thick N52 Custom Permanent Ring Neodymium Magnet, China Manufacturer Super Strong High Grade Rare Earth Sintered Permanent Powerful Neodymium Magnets/NdFeB Magnet/Neodymium Magnet, Customized Size Sintered Rare Earth Strong Bar Magnets and so on.

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Supplier Homepage Product Sintered NdFeB Magnets 1/2" Od X 1/4" ID X 1/8" Thick N52 Custom Permanent Ring Neodymium Magnet

1/2" Od X 1/4" ID X 1/8" Thick N52 Custom Permanent Ring Neodymium Magnet

Purchase Qty.:
100-99,999 100,000+
FOB Unit Price: US $0.37 US $0.17
Purchase Qty. (Pieces) FOB Unit Price
100-99,999 US $0.37
100,000+ US $0.17
Get Latest Price
Port: Shenzhen, China
Production Capacity: 500000PCS/Month
Payment Terms: L/C, T/T, D/P, Western Union, Paypal

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Basic Info
  • Model NO.: c-2519
  • Shape: Arc Shape
  • Grade: N35, N38, N40, N42, N45, N48, N50, N52
  • Type: Permanent
  • Process Techinic: Sintering
  • Certification: ISO9001:2008; RoHS, Reach, SGS
  • Magnet Direction: Thickness or Customized
  • Transport Package: Professional Export Standard Packing
  • Origin: Guangdong, China
  • Application: Electronic Products, Speaker Magnet, Industrial Magnet, Jewelry Magnet, Solenoid, Motor Magnet
  • Coating: Zinc, Nickel, Ni-Cu-Ni Plated or Custom
  • Product Name: Ring Magnet
  • Composition: Neodymium Iron Boron
  • Size and Shape: Can Be Customized
  • Material: Sintered Neodymium-Iron-Boron
  • Trademark: Neutral, Customized
  • Specification: ISO9001: 2008, RoHS, SGS
  • HS Code: 8505119000
Product Description
  1.  Customized any size and shape
  2.  Free design and free samples service
  3.  100% payment protection and USD80000 warranty trade assurance
  4.  100% product quality protection with real material
  5.  100% on time shippment protection

Dimensions: 3/4" od x 3/8" id x 1/8" thick
Tolerances: ±0.004" x ±0.004" x ±0.004"
Material: NdFeB, Grade N42
Plating/Coating: Ni-Cu-Ni (Nickel)
Magnetization Direction: Axial (Poles on Flat Ends)
Weight: 0.233 oz. (6.6 g)
Pull Force, Case 1: 8.51 lbs
Pull Force, Case 2: 28.12 lbs
Max Operating Temp: 176ºF (80ºC)
Brmax: 13,200 Gauss
BHmax: 42 MGOe

1: Permanent Neodymium Magnets Description:
Product nameCustom arc cylinder disc block bar ring strong N35-N52 NdFeb Permanent Neodymium Magnet
Shapearc cylinder disc block bar ring strong (Sintered Neodymium magnets shape can customized)
MaterialNdFeB (Neodymium Iron Boron)
CoatingNi-Cu-Ni, Nickel, Zn, Gold, Silver, Copper etc.
Tolerance in size+/-0.05mm or +/-0.1mm
Magnetization directionThickness, Length, axially, diameter, radially, multipolar
GradeN33-N52;N33M-N50M;N33H-N48H; N30SH-N45SH;N30UH-N40UH; N28EH-N38EH,N28AH-N35AH
Br(kgs)N35(11.8-12.2);N52(14.4-14.8);N35M(11.8-12.2);N30H(10.8-11.3); N30SH(10.8-11.2); N30UH(10.8-11.2); U30EH(10.8-11.2)
Hcj(ka/m)N35≥955;  N52≥876;   N30SH≥1353;   N33AH≥2785
TW(degrees celsius) N35≤80;    N52≤70;   N30SH≤150;   N33AH≤240
ApplicationNdFeB neodymium rare earth permanent magnets are widely use in many different area, such as motors, sensor, speaker, rotors, alarm, microphone, wind turbines/wind generators, magnetic hooks, magnetic holder, filters automobiles and so on
MOQSamples could be offered
Delivery time3 to 10 days for sample, 10 to 30 days for order. (According to the stock information)
CertificationROHS, SGS, ISO9001

2. Magnetic properties and grade:
GradeBr mT
Hcb KA/m
Hcj KA/m
BHmax kj/m3
Max Operation 

3. Neodymium magnet shape and application:
Cylinder NdFeB Magnets
Disc NdFeB Magnets
a) Motors
b) Sensors
c) Microphones
d) Switchboard
Block Neodymium
Cube Shape Magnet
a) VCM
b) Printer
c) Magnetic chuck
d) Switchboard
Ring Neodymium Magnets
Bar Magnets
a) Horn, Trumpet
b) Magnetic separation
c) Loudspeakers
Segment Neodymium 
Arc Segment Magnets
a) Motor
b) Wind turbines
c) Wind generators
d) Switchboard
Customized Size

4: FAQ for neodymium magnet?

1. Material type and grade required?
2. Size and shape? if available, a sketch or drawing with dimensions and tolerances.
3. Application of the magnets?
4. Max working temperature?
5. How many pcs you want?
6. Delivery with Magnetized or not? Magnetization direction?
7. When you need goods arrived?
8. How to help your project?

5. Contact infomation:
Brian /Sales Manager
Dongguan Cirun Electronics Co.,Ltd
Tel: 0086-769-87564898  
Fax: 0086-769-89930719 
2F,A106 Fumin Road, Shuiku Industrial Area, Fenggang Town, Dongguan, China
Send your message to this supplier
Mr. Victor
Marketing Director
To: Mr. Victor

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