Gold Member Since 2012
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Ningbo Sine Magnetic Co., Ltd.

Permanent Magnet, Neodymium Magnet, Ndfeb Magnet manufacturer / supplier in China, offering Strong Permanent Neodymium Arc Magnet with Counterbore, Fashion Triangle Plastic Magnetic Clip, Super Strong Permanent Holding Magnet/Magnetic Holder and so on.

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Supplier Homepage Product NdFeB Magnet Strong Permanent Neodymium Arc Magnet with Counterbore

Strong Permanent Neodymium Arc Magnet with Counterbore

FOB Price: US $0.05 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $0.05/ Piece
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Production Capacity: 1000000 Pieces Per Month
Transport Package: Standard Air or Sea Package
Payment Terms: L/C, Paypal, Western Union

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Basic Info
  • Application: Motor Magnet
  • Coating: Zinc
  • Composite: NdFeB Magnet
  • Specification: RoHS\SGS
  • Shape: Arc
  • Type: Permanent
  • Trademark: SINE
  • Origin: Ningbo
Product Description
Strong Permanent Neodymium Arc Magnet With Counterbore

1. Materials: Neodymium-Iron-Boron;

2. Technology: Utilizes new Sintered NdFeB magnet techniques and equipment such as strip casting, HDDR technology;

3. Magnetic properties: High coercive force, the max operation temp is up to 200 degree centigrade or 380 curie temperature;

4. Grades: N35-N52, 30M-50M, 30H-48H, 30SH-45SH, 30UH-40UH and 30EH-38EH;

5. Shapes: Arc

6. Size: According to customers' request;

7. Coatings: Ni, Zn, gold, copper, epoxy, chemical, parylene and so on;

8. Applications: DC and servo motors, Linear actuators

Motor Neodymium magnet is an alloy magnet made from ND, Fe, B and other trace metal elements. It is a rare earth magnet known so far for the strongest magnetism as well as high performance (8MGOe-55MGOe) and good coercive force. Proven production process, strict quality assurance, complete technical service and remarkable cost performance.

Machining and tolerances

Neodymium is easily ground, although coolants must be used in the process to avoid spontaneous combustion of powder. Grinding should be completed before coating or plating is applied to protect the magnets from corrosion. Standard tolerances for neodymium magnets are +/-0.05mm for ground dimensions.

Temperature constraints

The temperature coefficient of neodymium has triggered several grades to be developed to meet specific operating requirements. Please refer to our chart of magnetic properties to compare the characteristics of each grade. Before choosing a neodymium magnet be sure to consider your application's maximum operating temperature.

Added value services

Our knowledgeable engineering department is always available to assist in determining the best grade and size of neodymium magnet for your application. We also offer coating and plating choices for magnets we custom-machine.
Technical data of Sintered NdFeB
Grade Br Hcb Hcj (BH)max  (Tw)
mT (kGs) kA/m (kOe) kA/m (kOe) kJ/m3 (MGOe)
N35 1170-1220 (11.7-12.2) ≥  868 (  ≥  10.9) ≥  955 (  ≥  12) 263-287 (33-36) 80  º C
N38 1220-1250 (12.2-12.5) ≥  899 (  ≥  11.3) ≥  955 (  ≥  12) 287-310 (36-39) 80  º C
N40 1250-1280 (12.5-12.8) ≥  907 (  ≥  11.4) ≥  955 (  ≥  12) 302-326 (38-41) 80  º C
N42 1280-1320 (12.8-13.2) ≥  915 (  ≥  11.5) ≥  955 (  ≥  12) 318-342 (40-43) 80  º C
N45 1320-1380 (13.2-13.8) ≥  923 (  ≥  11.6) ≥  955 (  ≥  12) 342-366 (43-46) 80  º C
N48 1380-1420 (13.8-14.2) ≥  923 (  ≥  11.6) ≥  876 (  ≥  12) 366-390 (46-49) 80  º C
N50 1400-1450 (14.0-14.5) ≥  796 (  ≥  10.0) ≥  876 (  ≥  11) 382-406 (48-51) 60  º C
N52 1430-1480 (14.3-14.8) ≥  796 (  ≥  10.0) ≥  876 (  ≥  11) 398-422 (50-53) 60  º C
30M 1080-1130 (10.8-11.3) ≥  796 (  ≥  10.0) ≥  1114 (  ≥  14) 223-247 (28-31) 100  º C
33M 1130-1170 (11.3-11.7) ≥  836 (  ≥  10.5) ≥  1114 (  ≥  14) 247-263 (31-33) 100  º C
35M 1170-1220 (11.7-12.2) ≥  868 (  ≥  10.9) ≥  1114 (  ≥  14) 263-287 (33-36) 100  º C
38M 1220-1250 (12.2-12.5) ≥  899 (  ≥  11.3) ≥  1114 (  ≥  14) 287-310 (36-39) 100  º C
40M 1250-1280 (12.5-12.8) ≥  923 (  ≥  11.6) ≥  1114 (  ≥  14) 302-326 (38-41) 100  º C
42M 1280-1320 (12.8-13.2) ≥  955 (  ≥  12.0) ≥  1114 (  ≥  14) 318-342 (40-43) 100  º C
45M 1320-1380 (13.2-13.8) ≥  995 (  ≥  12.5) ≥  1114 (  ≥  14) 342-366 (43-46) 100  º C
48M 1360-1430 (13.6-14.3) ≥  1027 (  ≥  12.9) ≥  1114 (  ≥  14) 366-390 (46-49) 100  º C
50M 1400-1450 (14.0-14.5) ≥  1033 (  ≥  13.0) ≥  1114 (  ≥  14) 382-406 (48-51) 100  º C
30H 1080-1130 (10.8-11.3) ≥  796 (  ≥  10.0) ≥  1353 (  ≥  17) 223-247 (28-31) 120  º C
33H 1130-1170 (11.3-11.7) ≥  836 (  ≥  10.5) ≥  1353 (  ≥  17) 247-271 (31-34) 120  º C
35H 1170-1220 (11.7-12.2) ≥  868 (  ≥  10.9) ≥  1353 (  ≥  17) 263-287 (33-36) 120  º C
38H 1220-1250 (12.2-12.5) ≥  899 (  ≥  11.3) ≥  1353 (  ≥  17) 287-310 (36-39) 120  º C
40H 1250-1280 (12.5-12.8) ≥  923 (  ≥  11.6) ≥  1353 (  ≥  17) 302-326 (38-41) 120  º C
42H 1280-1320 (12.8-13.2) ≥  955 (  ≥  12.0) ≥  1353 (  ≥  17) 318-342 (40-43) 120  º C
45H 1300-1360 (13-13.6) ≥  963 (  ≥  12.1) ≥  1353 (  ≥  17) 326-358 (43-46) 120  º C
48H 1370-1430 (13.7-14.3) ≥  995 (  ≥  12.5) ≥  1353 (  ≥  17) 366-390 (46-49) 120  º C
30SH 1080-1130 (10.8-11.3) ≥  804 (  ≥  10.1) ≥  1592 (  ≥  20) 223-247 (28-31) 150  º C
33SH 1130-1170 (11.3-11.7) ≥  844 (  ≥  10.6) ≥  1592 (  ≥  20) 247-271 (31-34) 150  º C
35SH 1170-1220 (11.7-12.2) ≥  876 (  ≥  11.0) ≥  1592 (  ≥  20) 263-287 (33-36) 150  º C
38SH 1220-1250 (12.2-12.5) ≥  907 (  ≥  11.4) ≥  1592 (  ≥  20) 287-310 (36-39) 150  º C
40SH 1240-1280 (12.5-12.8) ≥  939 (  ≥  11.8) ≥  1592 (  ≥  20) 302-326 (38-41) 150  º C
42SH 1280-1320 (12.8-13.2) ≥  987 (  ≥  12.4) ≥  1592 (  ≥  20) 318-342 (40-43) 150  º C
45SH 1320-1380 (13.2-13.8) ≥  1003 (  ≥  12.6) ≥  1592 (  ≥  20) 342-366 (43-46) 150  º C
28UH 1020-1080  (10.2-10.8) ≥  764 (  ≥  9.6) ≥  1990 (  ≥  25) 207-231 (26-29) 180  º C
30UH 1080-1130  (10.8-11.3) ≥  812 (  ≥  10.2) ≥  1990 (  ≥  25) 223-247 (28-31) 180  º C
33UH 1130-1170 (11.3-11.7) ≥  852 (  ≥  10.7) ≥  1990 (  ≥  25) 247-271 (31-34) 180  º C
35UH 1180-1220 (11.8-12.2) ≥  860 (  ≥  10.8) ≥  1990 (  ≥  25) 263-287 (33-36) 180  º C
38UH 1220-1250 (12.2-12.5) ≥  876 (  ≥  11.0) ≥  1990 (  ≥  25) 287-310 (36-39) 180  º C
40UH 1240-1280 (12.5-12.8) ≥  899 (  ≥  11.3) ≥  1990 (  ≥  25) 302-326 (38-41) 180  º C
28EH 1040-1090 (10.4-10.9) ≥  780 (  ≥  9.8) ≥  2388 (  ≥  30) 207-231 (26-29) 200  º C
30EH 1080-1130 (10.8-11.3) ≥  812 (  ≥  10.2) ≥  2388 (  ≥  30) 223-247 (28-31) 200  º C
33EH 1130-1170 (11.3-11.7) ≥  836 (  ≥  10.5) ≥  2388 (  ≥  30) 247-271 (31-34) 200  º C
35EH 1170-1220 (11.7-12.2) ≥  876 (  ≥  11.0) ≥  2388 (  ≥  30) 263-287 (33-36) 200  º C
38EH 1220-1250 (12.2-12.5) ≥  899 (  ≥  11.3) ≥  2388 (  ≥  30) 287-310 (36-39) 200  º C
28AH 1040-1090 (10.4-10.9) ≥  787 (  ≥  9.9) ≥  2624 (  ≥  33) 207-231 (26-29) 230  º C
30AH 1080-1130 (10.8-11.3) ≥  819 (  ≥  10.3) ≥  2624 (  ≥  33) 223-247 (28-31) 230  º C
33AH 1130-1170 (11.3-11.7) ≥  843 (  ≥  10.6) ≥  2624 (  ≥  33) 247-271 (31-34) 230  º C
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