银河磁体Stock Code:300127

CN EN JP

Products

Products

Products

Bonded Magnets

Bonded Magnets

The bonded Nd-Fe-B magnet is mainly produced by molding compression of the Nd-Fe-B compound alloy powder with epoxy resin, with the following characteristics:

1、Higher magnetic property: the magnetic property of bonded magnet is between that of sintered magnet and ferrite, with good consistency and stability;

2、High precision & freeness of magnet shape: the magnet shape and dimension can be guaranteed by the tooling, like ring, segment & block, etc., without further sintering and machining;

3、Good corrosion resistance: after ED coating or special surface treatment, the magnet can be applied under normal or unfavorable environment conditions in a durable period;

4、Diverse magnetization: multi-pole, skew and radial magnetization can be available. The magnetic surface can be on the ID, OD and end surface or combined magnetization. The field distribution can be square, sinusoid, etc.


The bonded Nd-Fe-B magnet can be applied on all kinds of small and micro-motors, such as spindle motor, stepping motor, synchronous motor, DC motor and brushless DC motor, and it can also be used for sorts of sensors. It can replace some sintered Nd-Fe-B magnet and ferrite, making motor assembling easier and more reliable, reducing cost and improving efficiency.

1

  • Magnetic and Physical Properties
  • Typical Applications
牌号

剩余磁感应强度Br

mT(KGs)

矫顽力Hcb

kA/m(KOe)

内禀矫顽力Hcj

kA/m(KOe)

最大磁能积(BH)max

kJ/m3(MGOe)

可逆透磁率μr


平均可逆温度系数

%/℃

最大工作温度

饱和磁化场

kA/m(KOe)

密度ρ

g/cm3

GPM-2250-450
(2.5-4.5)
160-280
(2.0-3.5)
320-640
(4.0-8.0)
16-32
(1.5-4.0)
1.2-0.16150>1600
(>20)
4.5~5.5
GPM-4400-550
(4.0-5.5)
240-360
(3.0-4.5)  
480-720
(6.0-9.0)  
32-52
(4.0-6.5)
1.2-0.16150>1600
(>20)
5.0~6.0
GPM-6500-650
(5.0-6.5)
320-400
(4.0-5.0)
480-720
(6.0-9.0)  
48-60
(6.0-7.5)
1.2-0.14150>1600
(>20)
5.6~6.1
GPM-8  600-680
(6.0-6.8)
360-440
(4.5-5.5)
640-800
(8.0-10.0)
60-72
(7.5-9.0)
1.2-0.12160>1600
(>20)
5.9~6.2
GPM-8L 620-700
(6.2-7.0)
400-480
(5.0-6.0)
640-800
(8.0-10.0)
64-80
(8.0-10.0)
1.2-0.12160>1600
(>20)
5.9~6.2
GPM-8H 600-660
(6.0-6.6)  
400-480
(5.0-6.0)
1040-1360
(13.0-17.0)
64-72
(8.0-9.0)
1.15-0.10180>2400
(>30)
5.8~6.1
GPM-8SR620-700
(6.2-7.0)  
400-480
(5.0-6.0)
800-1120
(10.0-14.0)
68-80
(8.5-10.0)
1.15-0.10180>2000
(>25)
5.8~6.1
GPM-10680-730
(6.8-7.3)
400-480
(5.0-6.0)
640-800
(8.0-10.0)
76-84
(9.5-10.5)
1.2-0.10160>1600
(>20)
5.9~6.2  
GPM-10H700-750
(7.0-7.5)
440-520
(5.5-6.5)
720-840
(9.0-10.5)
80-88
(10.0-11.0)
1.2-0.10160>1600
(>20)
6.0~6.3
GPM-12720-770
(7.2-7.7)
440-520
(5.5-6.5)
720-800
(9.0-10.0)
88-96
(11.0-12.0)  
1.2-0.10160>1600
(>20)
6.0~6.3
GPM-12H740-800
(7.4-8.0)
440-520
(5.5-6.5)
720-800
(9.0-10.0)
88-96
(11.0-12.0)
1.2-0.10160>1600
(>20)
6.1~6.4
GPM-12L750-800
(7.5-8.0)  
400-480
(5.0-6.0)
480-640
(6.0-8.0)
88-96
(11.0-12.0)
1.22-0.12150>1600
(>20)
6.0~6.3
GPM-13L760-830
(7.6-8.3)
400-480
(5.0-6.0)
480-640
(6.0-8.0)
88-104
(11.0-13.0)
1.22-0.12150>1600
(>20)
6.1~6.4

Automotive Motors

Bonded magnets have advantages of small size, light weight and stable magnetic stability, comprehensively applied in actuation motors for moving, starting and lifting, auto-pumps and all sorts of sensors.


HDD Motor

HDD motors include hard disk drive and fan motor. They have requirements on high precision, strict dynamic balance, cleanliness, low cost and small size. At present, bonded magnets are completely applied in these motors.

HDD

Pump-related (Water, Oil Pump) Motors


IMG_4066

Power Tools

IMG_4063

Office & Home Appliances

Sorts of micro motors use bonded magnets which have simple production technology, high reliability, low cost and high efficiency and can replace some parts of sintered magnets and ferrites.  

IMG_4052

Sensors and Encoders

IMG_4103

Back to the typical case