Strong Rare Earth Magnets Manufacturers

Ningbo Jinlun Magnet Technology Co., LTD is professional block rare earth magnets manufacturers and strong ring magnets suppliers, our factory offer series of magnetic material worldwide.
Strong magnetic material, chances are this term refers to a certain material that is made up of alloys with very strong magnetizing properties. Some of the more common materials used in making these magnets include iron, tungsten, cobalt, platinum and even tin. Unfortunately, some of these materials can be harmful when they are accidentally introduced into your body. It is actually difficult to find strong magnets in their natural state. While rare earths are found in nature naturally, they are so reactive that they cannot be made into a usable product without a great deal of effort on the part of scientists. As a result, they are commonly synthesized using the alloys mentioned above, which is where the term "strong magnet" comes from.

Shape	Schematic	Size
Shape	Schematic	Axial	Vertical
Block		30<W<100；15<L<80；20<H<60 100≤W≤240；30<L<240；30<H<60 240<W<300；40<L<120；30<H<60
Disk		6≤D<8；20<H<32 8≤D<9.5；20<H<36 9.5≤D<32；20<H<44 32≤D<250；22<H<60	8≤D<17；20<H<32 17≤D<90；22<H<60
Ring		18≤D<32；20<H<35 32≤D<250；20<H<45	20≤D≤60 8≤(D-d）/2<15 25≤H≤40
Arc		35≤W≤50； 15≤T≤40； 30≤H≤45；	35≤W≤50；15≤T≤30； 24≤H≤45 35≤W≤100； 25≤T≤40；30≤H≤80

Rare earth magnets have been around for a very long time, though it is hard to pinpoint when they were first invented. They can be seen in everything from watches to clothing but were primarily developed for use on automobiles. In addition to being used in the automotive industry, many other industries have found great success in using rare earth magnets in their equipment. This includes medical, aerospace and manufacturing industries. There are a number of different types of magnets available, including ferromagnetic and magnetite.
Dimensional deviation (unit: mm)

Size	Allowable deviation of sintered surface		Allowable deviation of working surface
Size	Perpendicular to the pressing direction	Direction of suppression	Flat grinding	Internal and external round grinding	Wire cutting	slice
≤10	±0.25	±0.30	±0.04	±0.05	±0.06	±0.05
10~20	±0.40	±0.45	±0.05	±0.05	±0.08	±0.08
20~50	±0.60	±0.70	±0.06	±0.05	±0.10	±0.10
50~80	±1.00	±1.10	±0.08	±0.05	±0.10	±0.10
80~150	±1.00	±1.10	±1.15		±0.15

Shape deviation (unit: mm)

Variation type	Variation type	Basic size（mm）		Deviation
Parallelism	Working surface room	Basic size（mm）		One half of the tolerance value between the two planes
Verticality	Between sintered surfaces	Random		90°±1°
	Between machined surface and sintered surface			90°±1°
	Working surface room			90°±0.15°
Concentricity	Between sintered surfaces	Outer diameter	≤14	±0.35mm
			14~24	±0.60mm
			24~40	±0.80mm
			40~60	±1.100mm
			60~80	±1.150mm
			80~180	±2.00mm
	Working surface room	Random		±0.08mm