Radially Magnetized Bonded Ring Permanent Magnets with Multi-poles on OD or ID 20170818
Bonded NdFeB Magnets Manufacturer China Rare Earth Magnet Limited:
Please kindly be noted making new molding and fixture is necessary for production of the radially magnetized magnets.
The total production cycle of samples including making molding and fixture is about *** days.
If you confirm to order, please advise the delivery address, I will calculate shipping cost and total amount for you.
BNP-8 Permanent Magnet
NdFeB ring magnets, Sizes as per drawing, Coating: Black Epoxy, Magnetized, 8 poles across diameter
Molding Cost: USD***; Fixture: USD***, Unit Price: USD***/pc
When we arrange production, we need to know the magnetization is across outer diameter or inner diameter.
If magnetize the magnets across outer diameter, the magnetic force focus on outer circumferential surface
Instead to magnetize across inner diameter, the magnetic force is concentrated in the inner circular surface.
The price is the same, but the use effect is different.
Please reference the sketch of magnetization across inner diameter and across outer diameter below
The direction of arrow is magnetization direction, please check.
Magnetized through Inside Diameter or Outside Diameter:
We don’t understand the difference between the “inside diameter” vs “outside diameter” magnetization. If the ring is radially magnetized, the magnetic moment should go from the center to the outside like your drawings show. Basically, the magnetization is axially symmetric. Could you please explain in more detail the difference?
Multi-pole Permanent Magnets Manufacturer China Rare Earth Magnet Limited:
In brief, the choice of magnetization direction basically depends on the magnetic application of your products.
Along which magnetization direction, the performance is the highest.
Which side or surface of the magnets do you mainly want to use please?
The outer circular surface or the inner circular surface or the flat surface
To magnetize through outer diameter to inner diameter, the magnetic performance on outer circular surface is the highest.
To magnetize from inner diameter to outer, the magnetism on inner circular surface is the highest.
Multi-poles Outer Diameter Magnetization:
Okay. I think I understand. You are asking where to place the magnetization fixture...
For magnetic fields strength, outside is better. However, I want to be sure that the outside of the ring has a nice sinusoidal transition between poles.
8 Poles NdFeB Magnets Manufacturer China Rare Earth Magnet Limited:
We noted it. The magnetization orientation you desired is 8 poles through outer diameter.
For your request of sine wave, our engineering said the outer diameter is large and the pole width is too big, sine wave is not likely to meet. Anyway, our engineering will try to make the bonded permanent magnets in this direction.
Please kindly be noted making new molding and fixture is necessary for production of the radially magnetized magnets.
The total production cycle of samples including making molding and fixture is about *** days.
If you confirm to order, please advise the delivery address, I will calculate shipping cost and total amount for you.
BNP-8 Permanent Magnet
NdFeB ring magnets, Sizes as per drawing, Coating: Black Epoxy, Magnetized, 8 poles across diameter
Molding Cost: USD***; Fixture: USD***, Unit Price: USD***/pc
When we arrange production, we need to know the magnetization is across outer diameter or inner diameter.
If magnetize the magnets across outer diameter, the magnetic force focus on outer circumferential surface
Instead to magnetize across inner diameter, the magnetic force is concentrated in the inner circular surface.
The price is the same, but the use effect is different.
Please reference the sketch of magnetization across inner diameter and across outer diameter below
The direction of arrow is magnetization direction, please check.
Magnetized through Inside Diameter or Outside Diameter:
We don’t understand the difference between the “inside diameter” vs “outside diameter” magnetization. If the ring is radially magnetized, the magnetic moment should go from the center to the outside like your drawings show. Basically, the magnetization is axially symmetric. Could you please explain in more detail the difference?
Multi-pole Permanent Magnets Manufacturer China Rare Earth Magnet Limited:
In brief, the choice of magnetization direction basically depends on the magnetic application of your products.
Along which magnetization direction, the performance is the highest.
Which side or surface of the magnets do you mainly want to use please?
The outer circular surface or the inner circular surface or the flat surface
To magnetize through outer diameter to inner diameter, the magnetic performance on outer circular surface is the highest.
To magnetize from inner diameter to outer, the magnetism on inner circular surface is the highest.
Multi-poles Outer Diameter Magnetization:
Okay. I think I understand. You are asking where to place the magnetization fixture...
For magnetic fields strength, outside is better. However, I want to be sure that the outside of the ring has a nice sinusoidal transition between poles.
8 Poles NdFeB Magnets Manufacturer China Rare Earth Magnet Limited:
We noted it. The magnetization orientation you desired is 8 poles through outer diameter.
For your request of sine wave, our engineering said the outer diameter is large and the pole width is too big, sine wave is not likely to meet. Anyway, our engineering will try to make the bonded permanent magnets in this direction.
