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> 25 2X1X1/2 neodymium magnets wind turbine epoxy+ni/hole
25 2X1X1/2 neodymium magnets wind turbine epoxy+ni/hole
25 Pieces - 2" x 1" x 0.5" Thick Neodymium NdFeB Block Magnet, Grade N42, 20% stronger than N35
Extremely durable Epoxy + Nickel + Copper + Nickel Quadruple Layer Coated with tapered center hole
Tapered counter sunk center hole on both sides of magnet to recess a screw head
0.14" Diameter counter sunk center hole fits with #6 metal screws
Epoxy-Nickel-Copper-Nickel quadruple layer coated for maximum protection and durability
For wind generator magnets, coating and performance are the most important things to consider, we recommend Epoxy+Nickel+Copper+Nickel 4-layer coating for long term durability under all weather conditions, we don't recommend Epoxy single layer coating, please read details below. To have better performance for your wind generator, the higher grade the magnets, the better; N42 grade offers much better performance thanN35. we recommend at least N42 or higher grade for high performance.
Coating Makes a big difference !
Hugh Piggott talks about wind turbine failure caused by magnet corrosion due to bad coating in his book:
"........ the magnets themselves that can lead to a major failure in under 5 years............. Once the protective plating on the magnet is punctured, the magnet corrodes and swells gradually."
Epoxy+Nickel+Copper+Nickel 4-layer coating vs. Nickel+Copper+Nickel 3-layer coating
Nickel+Copper+Nickel coating provides protection against moisture and oxygen but is prone to corrosion in salt and acidic conditions.
The combination of Epoxy and Nickel+Copper+Nickel coating is the best solution against both corrosion in salt, acidic conditions and moisture, oxygen.
We recommend Epoxy+Nickel+Copper+Nickel coated 2x1x1/2 magnet due to the superior Corrosion Resistance and excellent adhesion to metal surface of Epoxy+Nickel+Copper+Nickel coating than Nickel+Copper+Nickel coating.
In summary, Epoxy + Nickel + Copper + Nickel 4-layer coating is the most durable and most effective magnet coating. Nickel + Copper + Nickel 3-layer coating is less durable than Epoxy + Nickel + Copper + Nickel 4-layer coating. And Epoxy single layer coating is the LEAST durable coating for neodymium magnets.
Epoxy-Nickel-Copper-Nickel quadruple layer offers maximum protection and durability
Grade Makes a big difference ! The higher the grade, the stronger the magnet
N35 is the lowest NdFeB neodymium magnet grade on the market, we don't carry N35 grade due to its lower performance making our N42 grade the better value.
N38 and N40 are lower grades compared to N42.
Magnetized through the Thickness 0.5", poles are on the two 2x1" surfaces
Approximate pulling force: over 72 lbs
ISO certified Strong rare earth neodymium iron boron magnets with the best corrosion-resistant coating of Epoxy + Nickel + Copper + Nickel.
