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Re: thread340-310562 Look up Eclipse magnetics... They produce Alnico systems that are designed to what you describe. They have made these for years and it is a very simple product design. RHmagster Never Stop Learning, ;-)

JAFD... Hi, I too had this problem and it looks as though you are getting good advice from this thread. Main thing to do, and this is prob. a repeat of what has been said already, get demo's from companies. Apply your companies products to the demo's. Research cost of seat. Pic one that is...

Hello All, The dims you propose would be a size suitable for production. the wall thk. is of most concern when pressing this part. Too thk/Too thin presents problems during sintering. This due to shrinkage cracking and warping. Cost - for high volumes these can prove to be less costly. This...

Hello again, I have found, using Neo, rings of this nature have always performed as expected. Also found them to out perform segmented arcs in that you do not have the loss with solid radial rings as you do with the segments. Segments allow for alternate return paths other than that of the...

Hello, Please correct me if I'm wrong, or maybe I should verify first before answering but I'm not at my desk (ok, I'll have to wing it). If you have the volume of the solenoid and the generated field level at center, can you calculate the total energy required to obtain the field in that...

Hello DA... It does sound as if the radial orientation, radially oriented magnets, would do you better than the first design described. The most common material used to produce these rings (as for my own experience goes) is Neodymium. Dimension of the rings play a major role in whether they...

Hello markvaughn, I hope this will help, MAgnetic levitation, a long sought after dream when it comes to stability. There are some experimenters out there that have found - when building a levitation device - suspending one magnet above a magnetic base - by spinnig the magnetic base you...

Hi BrassMonkey4, Loctite 330 is a good material. It comes in a kit form with the 330 adhesive and the 7387 activator. Always follow instructions but basically its: Apply adhesive to ones side of the magnet and activator to the mating side of the steel plate. Place items together and wamo, your...

What is better for a motor application, when PM's are used, radial alignment of the arc or diametral, as for acheiving the best torque and speed for a given material property ? The arcs are located on the stator. Thanks

Hello lha, I too was brought up on CADD without proper training and I, although I wouldn't call it struggeling, found it more difficult in not having the proper training than if I had. I was fortunate though in that I did have some tutorage from a trained user, briefly. After about 10 yrs I...

OK, yes the technology is old. Thanks RHmagster

Hello, I'm new to the site but have have reviewed threads within and see it is very helpful and well established source of information and advice. I'm looking for a distributor of CuNiFe for existing projects. Also, since I'm not currently able to locate source, would also like to know...

Hello Robger, There are materials that can help in increasing the output but usually this only required if you are already saturating the material used. Low carbon steel saturates at around 18 kOe. If you are saturating your current material you may try Magnetic Iron which saturates at a...

Hello Nellysdad, MM brings forth a good point, material alignment maybe the culprit here. I have experienced similar and found with testing that the alignment of the material was skewed. You can check for this with a 3 point Helmholtz coil measurement if design of cicuit allows. Of course...

Nellysdad, In general terms, it is acceptable to say NdFeB requires 32 k Oersted to fully saturate (some as low as 18k Oersted ) and as mentioned, can erase any amount of small magentiztion caused by manufacturing processes. However, the magnetic chucks used in this type of processing can...