N52 Strong ring neodymium magnets
Neodymium ring magnet ais also known as tube magnet, a round disc magnet with a straight hole along the centre, the hole in centre ensures great versatility. Most ring magnet is with north and south poles on the flat circular surfaces (this is called as axial magnetisation). The few exception that is diametrically magnetised is specifically marked. Also, Multi pole ring magnet, even radially magnetized ring magnet, is more and more referred in this industry now.
Product Name: D20xd10x3mm strong ring neodymium magnets with NiCuNi Coating
Material: Sintered Neodymium-Iron-Boron ( NdFeB )
Grade: N52/ Customized (N33 N35 N38 N40 N42 N45 N48 N50 N52 ......)
Size: Customized magnet size
Shape: Ring/ Customized (block,disc,cylinder, bar, ring,countersunk, Segment,hook,cup,trapezoid, irregular shapes ,etc)
Coating: Nickel/ Customised (Zn, Ni-Cu-Ni, Ni, Gold, Silver, Copper, Epoxy, Chrome, etc)
Magnetization direction: Thickness Magnetized, Axially Magnetized, Diametrally Magnetized, Multi-poles magnetized, Radial Magnetized. (Customzied specific requirements magnetized)
Max working temperature for different grades
Grade | Remanence | Coercivity Force | Intrinsic Coercive Force | Max. Energy Product | Working Temp. | ||||
Br | Hcb | Hcj | (BH)max | ||||||
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 ° C |
N38 | 1220-1250 | 12.2-12.5 | ≥ 899 | ≥ 11.3 | ≥ 955 | ≥ 12 | 287-310 | 36-39 | 80 ° C |
N40 | 1250-1280 | 12.5-12.8 | ≥ 907 | ≥ 11.4 | ≥ 955 | ≥ 12 | 302-326 | 38-41 | 80 ° C |
N42 | 1280-1320 | 12.8-13.2 | ≥ 915 | ≥ 11.5 | ≥ 955 | ≥ 12 | 318-342 | 40-43 | 80 ° C |
N45 | 1320-1380 | 13.2-13.8 | ≥ 923 | ≥ 11.6 | ≥ 955 | ≥ 12 | 342-366 | 43-46 | 80 ° C |
N48 | 1380-1420 | 13.8-14.2 | ≥ 923 | ≥ 11.6 | ≥ 876 | ≥ 12 | 366-390 | 46-49 | 80 ° C |
N50 | 1400-1450 | 14.0-14.5 | ≥ 796 | ≥ 10.0 | ≥ 876 | ≥ 11 | 382-406 | 48-51 | 60 ° C |
N52 | 1430-1480 | 14.3-14.8 | ≥ 796 | ≥ 10.0 | ≥ 876 | ≥ 11 | 398-422 | 50-53 | 60 ° C |
Advantages:
1. High Performance :
Having good resistant to demagnetization.
2.High Consistancy :
The Cpk of Remanence (Br) and Intrinsic Coercive Force (Hcj) are much higher than 1.67. The consistency of the surface magnetic field and magnetic flux can be controlled at +/-1%.
3.High Working Temperature :
The neodymium magnet of BEARHEART can satisfy the working temperature requirements with excellent temperature resistance. The AH series with 40 kOe super-high coercive force can replace Smco magnets in most applications.
4.High Anti-Corrosion:
The perfect coating of BEARHEART Magnets can meet many anti-corrosion requirements. The salt spray test and humidity heat test of the high anti-corrosion coating Nickel+Copper+Epoxy is typically more than 1000 hours.
Applications
Strong Ring magnet is being designed into a new generation of motors, generators, hydraulic cylinders, pumps & sensors, rotor shafts and more. What's more, it remain very popular in high end loud speakers and high intensity separators.
