O Ring Shaped Magnet

Neodymium Magnets 04/07/2021

ring-shaped magnet

Neodymium-Magnet-Ring-Shape

Neodymium magnets create what is said to be the strongest magnetic field currently available on the market. · Can be machined into a round, square, or ring shape ...

Neodymium Magnet Ring Shape

Volume Discount is available

This is a ring magnet with excellent mechanical strength.

[Features]

· Neodymium magnets create what is said to be the strongest magnetic field currently available on the market.

· Can be machined into a round, square or ring shape according to the application.

· Mechanical strength is excellent, but they are prone to rust and the surface is coated to prevent this.

Must be used at no higher than 80℃.

Rings. Neodymium / Rare Earth Ring Shaped Magnets. Free USA Shipping Orders Over $500.00.

Basic ring magnets without any additional machining can be magnetized with their north and south pole on opposite circular faces or diametrically magnetized so ...

you will find a selection of magnets with a central plain hole for fixing in place with a non-countersunk bolt or screw or for fixing on to a rod.

Basic ring magnets without any additional machining can be magnetized with their north and south pole on opposite circular faces or diametrically magnetized so that the north pole is on one curved side and the south pole is on the opposite curved side.

They are used in many everyday appliances such as vacuum cleaners plus motors, generators, rotor shafts, and more.

You can also use ring magnets with a piece of copper pipe to display fascinating eddy currents.

Follow-Up #11: gold affecting magnets?

Q: This New Yorker article claims that the amount of gold on a slaving ship was sufficient to distract the compass.

" The nine thousand dollars in gold stashed on board to pay for the slaves played havoc with the ship�s compass, taking it off course;

after that, a hurricane caught it just north of Bermuda." Does that seem plausible?

- Robert C Kahlert (age 48) Leander

A: This does indeed sound implausible.

Pure gold is very weakly diamagnetic, too weak to have any noticeable effect on an ordinary compass.

Some iron impurities in the gold could make it weakly paramagnetic, but I doubt that could be strong enough to throw a compass off.

Mike W.

Follow-Up #12: magnetic panning for gold

Q: thank you so much for answering my question regarding whether or not gold is magnetic.

the reason I asked the question is my son read that there is gold floating in seawater and in streams (and I explained that people used to pan for gold).

He wanted to know why you just don’t put a magnet in seawater, or a stream, and let it collect the gold? as a dad, I really didn't have a good answer for him....do you?

- Shawn johnson

Winchester, ma, USA

A: Shawn- I guess the answer is just that the gold magnetizes so little even in a strong field that you can’t pick it up.

You may not have much pure gold lying around, but you probably have some copper wire, which has similar magnetic and electrical properties.

Your son can try picking it up with a magnet.

No answer beats a nice experiment.

Mike W.p.s.

It turns out gold and copper are very weakly diamagnetic, which means they'll be slightly repelled by the magnet unless they have magnetic impurities in them.

Follow-Up #13: Using magnets to pick up gold

Q: There was a question on if gold is magnetic and the answer was yes slightly.

I was wondering if it is possible (and how efficient) to "pick up" gold flakes (as small as 1 micron) with a magnet?

- Andrew (age 21)

Bellevue Community College, WA

A: If you have a magnet that is strong enough, you can pick up even weakly paramagnetic materials.

Actually, what’s important is not the strength of the magnet but how non-uniform the field is.

So making the magnet with a sharp tip might help pick up small paramagnetic objects.

However, it turns out gold is weakly diamagnetic, so that magnetic tip would actually repel it a tiny bit.

There is a version of this that may be more successful, though.

If the magnetic field is both non-uniform and alternates in time, then the magnetic field will generate eddy currents in the electrically conductive gold flakes.

These eddy currents will oppose the change in a magnetic field, and the net effect will be to repel electrically conducting flakes from the alternating magnetic field.

There may be other kinds of electrically conducting flakes in your sample, but gold is one of the better electrical conductors, and this level of separation may already be a big step forwards.

o ring magnet

Strong-Neodymium-O-Ring-Magnet

Customized O Ring Magnet. The Grade & Size & Shape of our magnets can be customized according to your requirements. One-Stop Service: Designing, Tooling set ...

Strong Neodymium O Ring Magnet

70-45mm x 10mm;

or according to customers' request

Tolerance Standard +/-0.05mm, Min.+/-0.03mm;

a. Before grinding and cutting, we inspection the black product tolerance;

b. Before and after coating, we will inspect the tolerance by AQL standard;

c. Before delivery, will inspection the tolerance by AQL standard.

Coating Zn ( Ni, Zn, NiCuNi, gold, silver, copper epoxy can be customized )

Grade N35-N52( M, H, SH, UH, EH series ) to choose from Material

1. How to customized your magnets?

( Size, shape, grade, coating, etc can be customized according to your requirements. )

2. How Strong is Neodymium Magnet?

-- Different NdFeB Magnet Parameters:

3. Surface Treatment

There have many plating options like Nickel coating, Zinc, Gold, Black Epoxy, White Epoxy, and so on.

Zn and Nickle coating is the most popular coating.

After plating, has good rust, corrosion resistance.

Different coatings for your choose

Coating

Have a high anti-corrosion ability > 24 hr

Applicable to a more harsh environment > 48 hr

Application of O Ring Magnet：

Acoustic field: the speaker, receiver, microphone, alarm, stage audio, car audio, and so on.

Electronics: permanent magnetic actuator vacuum circuit breakers, magnetic relays, meter, meter, sound meter, a reed switch, sensors.

Electrical field: VCM, CD / DVD-ROM, generators, motors, servo motors, micro-motors, motors, vibration motors.

Machinery and equipment: magnetic separation, magnetic crane, magnetic machinery.

Healthcare: MRI scanners, medical equipment, magnetic health products, and so on.

Other industries: magnetized Wax, pipe descaling, magnetic fixture, automatic mahjong machine, magnetic locks, doors and windows magnetic, magnetic luggage, leather magnetic toys, magnetic tools, gifts, and packaging.

Some Daily Life Application Show:

Magnets Package：

1. Disc Magnet is special good for delivery, and they have to make special packing before transportation.

2. Antimagnetic Packaging / Neutral Packing / Custom-make Welcome

Warning :

1. Keep away from pacemakers.

2. Powerful magnets may hurt your fingers.

3. Do not touch for children, parental supervision required.

4. All magnets maybe chip and shatter, but if it is used correctly, it can last a lifetime.

5. If the magnet is damaged, please dispose of it completely.

Shards are still magnetized.

6. If the magnet is swallowed, it will be very dangerous.

o ring magnet

This magnet clip can be put anywhere on clothes, define new volumes, become a jewel, sunglass holder, etc.

Length: 6,5cm

Width: 3cm

It is handmade with naturally tanned calfskin from Italy and Norway in our Creative Lab in Paris.

What does that mean? Calfskin is already proof of high quality.

Since no chemicals are involved in the process, it is non-allergenic.

The hardware is a heart of brass, plated whether with gold 24K, or silver palladium.

The Neodymium magnet is super strong and comes from Spain.

A living material, leather changes, softens and gains a patina with time.

Leather is sensitive to natural elements: water, oil, heat, light, and environments that are too humid or too dry.

Protect it from prolonged exposure to intense light and heat (direct sunlight, on a radiator, etc.), which may alter the color.

If the leather meets water, wipe it immediately with a soft, lint-free cloth.

This will prevent the formation of stains and blisters.

Keep it away from bad influences, offer it frequent holidays, and give it all the love it deserves.

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