86-571-82750965             wang@dbmagnet.com
You are here: Home » Products » Neodymium magnet » Arc segment magnets » Neodymium arc segment magnets for bldc motors

Product Category

Latest News


Share to:
sharethis sharing button

Neodymium arc segment magnets for bldc motors

Material: 38SH NdFeB Magnets, Arc Segment Neodymium Magnets
Dimension: R(mm)x r(mm)x W(mm)x T(mm)x A℃ with tolerance +/-0.1 or +/-0.05mm
Magnetizating Direction: Thickness
Surface Treatment: NiCuNi plating
Max Working Temperature: 150℃
Magnetic Properties:
Residual Magnetic Flux Density (Br): 12.2-12.6 KGs (T): 1.12-1.26 T
Energy Density (BH)max: 35-39 MGOe 279-310 KJ/m³
Coercivity Force (Hcb): ≥11.6 KOe ≥923 KA/m
Intrinsic Coercivity Force (Hcj): ≥20 KOe ≥1592 KA/m
  • DunBen

Description :
Arc super magnet strength magnets can be seen as a part of ring magnets or disc magnets. Arc super magnet strength magnets are also called Neodymium Segment magnets that are made by wire cutting and grinding from block magnets. Super magnet strength arc segment or super magnet strength tile magnets are commonly used in electric machines, equipment, motors and generator magnet application, rotors, stators, couplings, wind turbine and other super magnet strength NdFeB magnet applications. These products will generate a lot of heat and energy in high speed running. So the built-in arc generator magnet have to withstand high temperature in operating. Arc magnets usually make with high energy material , like H, SH grade. These magnets can be assemblied together to a ring and sticked to iron housing. The meterial can work at high temperature and have low weight lost in high speed rotating. The material also have strong torque force. They also have uses where a magnet needs to be formed around a cylinder. We carry a limited selection of arc segment magnets but can manufacture custom sized magnets to order.

Grade and Magnetic Properties


Grade :



N35(11.7-12.2 )  N38(12.2-12.5)  N40(12.5-12.8)  N42(12.8-13.2)

N45(13.2-13.8 )  N48(13.8-14.2 ) N50(14.0-14.5 )  N52(14.3-14.8 )



(N35-N45)≥955   (N48-N52)≥876  (N35M-N50M)≥1114

(N35H-N48H)≥1353     (N35SH-N45SH)≥1592

(N30UH-N40UH)≥1990  (N30EH-N38EH)≥2388



(N35-N48)≤80℃    (N50-N52)≤60℃   (N35M-N50M)≤100℃

(N35H-N48H)≤120℃   (N35SH-N45SH)≤150℃

(N30UH-N40UH)≤180℃  (N30EH-N38EH)≤200℃


ndfeb characteristics.pdf

We list some diagram of common types of permanent magnet segments as follows for your information.
arc draw
arc draw2
ndfeb coating.jpg


  Hang Zhou XiaoShan Dunben Magnet  Co., Ltd 
 1702, Unit 2, Building 1, Dacheng Mingzuo, Shiixn Road, Xiaoshan, Hangzhou, Zhejiang, China
  86-571-82750965 
  86-571-82751287



Scan QR Code

Copyright © Hang Zhou XiaoShan Dunben Magnet  Co., Ltd All rights reserved.
Designed by Leadong    Manage Entrance