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Rectangular N52 NdFeB Neodymium Magnets Strong Block for Motor Accessories NIDE Brand Model NDPJ-CW-58
Product Description
N52 Strong Magnetic Materials Rectangular Neodymium Magnets Block NdFeB Rare Earth Magnet
NdFeB Magnet Overview
NdFeB permanent magnets are developing rapidly and widely used due to their excellent performance, abundant raw materials, and reasonable prices. Most block magnets have their north and south pole on the two largest areas. The few exceptions, which are magnetized in longitudinal direction, are specifically marked. These block magnets, like our other super magnets, are made of a special NdFeB alloy, which allows neodymium block magnets to achieve an extreme adhesive force of up to 200 kg. It is mainly used in micro and special motors, permanent magnet instruments, electronics industry, automobile industry, petrochemical industry, nuclear magnetic resonance equipment, audio equipment, magnetic levitation system, magnetic transmission mechanism, and magnetic therapy equipment. The surface usually needs to be electroplated, such as galvanized, nickel, silver, gold, etc., and can also be phosphated or sprayed with epoxy resin to extend service life and improve aesthetics.
NdFeB Magnet Specifications
| Product name | NdFeB Rare Earth Strong Neodymium Magnet |
| Material | Sintered Neodymium-Iron-Boron (NdFeB) |
| Size | Customized |
| Shape | Customized (Block, Disc, Cylinder, Bar, Ring, Arc, Countersunk, Segment, Hook) |
| Plating / Coating | Nickel, Zinc, Ni-Cu-Ni, Epoxy, Rubber, Gold, Silver, etc. |
| Grade | Customized (N33, N35, N38, N40, N42, N45, N48, N50, N52) |
| Size tolerance | Routine ±0.1mm and strict ±0.05mm |
| Density | Customized |
Performance Grades & Working Temperatures
| Grade Series | Grade Metric | Max. Operating Temperatures |
|---|---|---|
| N35-N45 | 80°C | (176°F) |
| N48-N52 | 60°C | (160°F) |
| 35M-50M | 100°C | (212°F) |
| 33H-48H | 120°C | (248°F) |
| 33SH-45SH | 150°C | (302°F) |
| 30UH-40UH | 180°C | (356°F) |
| 28EH-38EH | 200°C | (392°F) |
| 28AH-33AH | 220°C | (428°F) |
NdFeB Magnet Applications
Neodymium (NdFeB) Magnets are widely used across multiple industrial and commercial fields, such as voice coil motor (VCM), step motor, textile synchronous motor, geared motor, disc motors, servo motors, permanent magnet moving coil device, headphones, sensors, microphones, wind turbines, wind generators, printer, switchboard, packing box, loudspeakers, electric meter, speed meter, flowmeter, tachometer, magnetic separation, magnetic hooks, magnetic holder, magnetic chuck, magnetic clamp, magnetic crane, magnetic filter, CD-ROM, oil degreasing equipment, magnetic coupling, and magnetic switches.
NdFeB Magnet Gallery
Information Needed for Magnet Inquiry
It will be better if customer could send us detailed drawings including the following information:
- 1. Magnet drawing
- 2. Magnet material
- 3. Magnet dimension: width, thickness, tolerance
- 4. Magnet grade
- 5. Magnet applications
- 6. Required quantity: normally by weight or piece quantity
- 7. Other technical requirements
If you are not sure which grade is proper, please contact our engineer. We can also customize according to your needs.
Motor Magnet Solutions
We can offer a variety of NdFeB Magnet and Ferrite Magnet options. If you need special magnetic tiles, we can also customize according to your specific needs.
Electric Motor Components
NIDE can supply the full range of electric motor components such as commutator, ball bearing, thermal protector, carbon brush, insulation paper, shaft, magnet, fan, motor cover, etc.
Our products are mainly applied to induction motors, BLDC motor, universal motor, three phase motor, single phase motor, AC motor, DC motor, such as washing machine motor, air conditioner motor, pump motor, cooler motor, alternator motor, fan motor, ceiling fan motor, compressor motor, power tool motor, vacuum cleaner motor, mixer motor, series motor, electrical car motor, wheel hub motor, electric toothbrush motor, hair dryer motor, electric shaver motor, etc.
Frequently Asked Questions
QWhat is the maximum operating temperature for N52 grade NdFeB magnets?
Standard N52 grade neodymium magnets have a maximum operating temperature of approximately 60°C (160°F). For applications requiring higher thermal resistance, high-temperature grades such as M, H, SH, UH, EH, or AH can withstand temperatures ranging from 100°C up to 220°C.
QWhat surface coating options are available for NdFeB magnets?
Because sintered NdFeB is prone to oxidation, we provide various protective surface treatments including standard Nickel (Ni-Cu-Ni), Zinc, Epoxy resin spraying, Gold, Silver, and protective Rubber coatings to optimize corrosion resistance and durability.
QWhat manufacturing tolerances can you achieve on block magnets?
Our standard routine manufacturing tolerance is ±0.1mm. For high-precision motor applications or strict assembly requirements, we can provide tight precision tolerances down to ±0.05mm upon request.
QCan you supply custom dimensions, shapes, and magnetization directions?
Yes. In addition to rectangular block magnets, we offer custom configurations including discs, rings, arcs, cylinders, countersunk holes, and specialized magnetic segments. Magnetization can be oriented through the thickness, length, or multipole depending on technical drawings.
QHow do I choose between NdFeB magnets and Ferrite magnets for my motor project?
NdFeB magnets deliver significantly higher energy products and magnetic strength, making them ideal for compact, high-efficiency motors such as BLDC and servo systems. Ferrite magnets are more economical and oxidation-resistant but require larger volumes to achieve comparable magnetic field performance.
QWhat details are required to obtain a custom price quotation?
To provide an accurate quote, please share technical drawings, specified dimensions, tolerance requirements, magnetic grade, coating type, operating environment, and total expected order quantity.
