Will the magnetism be weaker after use years?

Yes, magnets do weaken over time.If you store permanent magnets correct, neodymium magnets will likely lose less than 1% of their flux density over 100 years.The magnetism decline is neglect, that's why we call it Permanent Magnet.

Custom Magnets Industrial Permanent NdFeB Diametrically Magnetized Ring Magnet

Name: Custom Magnets Industrial Permanent NdFeB Diametrically Magnetized Ring Magnet
Brand: Ningbo Bestway Magnet Co., Ltd.
SKU: 881418785

Zhejiang, ChinaNingbo Bestway Magnet Co., Ltd.

US$1.60

1,000-9,999 Pieces

US$1.50

10,000-99,999 Pieces

US$1.00

100,000+ Pieces

Sample price:US$5.00/piece.Request sample

Product profile

Customization

Available

Application

Speaker Magnet, Industrial Magnet, Motor Magnet

Shape

Countersink

Model NO.

BMAG

Coating

Nickle, Zinc, Epoxy, Silver, Gold, Parylene

Grade

N35-N55,N30m-N52m,N30h-N48h, N30sh-N45sh,N28uh-N42

Magnetized Direction

Through Thickness

Shipment

by Sea,Air,Express

Tolerance

+/-0.004in.

Type

Permanent

Composition

NdFeB Magnet

Product Name

Magnet Application Permanent NdFeB Diametrically M

Transport Package

Export Carton

Specification

REACH, CE, ROHS

Trademark

BEST WAY

Origin

Ningbo, Zhejiang

HS Code

8505111000

Production Capacity

100000PCS/Month

Key features

Customized Size and Shape: Available in block, disc, cylinder, bar, ring, arc, countersunk, segment, and hook shapes with customized dimensions.

Wide Grade Range: Offers N35-N55, 35M-54M, 35H-52H, 35SH-50SH, 28UH-48UH, 28EH-45EH, and 28AH-42AH grades.

Multiple Coating Options: Surface coatings include Nickel, Zinc, Epoxy, Gold, and Parylene for enhanced durability and corrosion resistance.

Diametric Magnetization: Specialized diametrically magnetized ring magnets suitable for sensors, motors, and specialized industrial applications.

Fast Reply Time: Customers receive replies within 15 minutes during working hours (08:00-18:00 UTC-8).

Free Sample Availability: Free samples provided for in-stock items; customers only need to cover delivery costs.

Versatile Applications: Widely used in motors, sensors, microphones, wind turbines, printers, loudspeakers, and magnetic separation.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceExperienced Team100% Finished Products Inspection

Ningbo Bestway Magnet Co., Ltd.

Zhejiang, China

Business Type: Manufacturer/FactoryExport Year: 2011-03-02Nearest Port: NINGBO, ShanghaiAverage Response Time: ≤3.79hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DDP, CIP, CPT, Others, FCA

AI-Powered supplier vetting

SummaryThe supplier is identified as a combined company and professional technical supplier with 3D design, ODM, OEM, and broad customization capabilities. It has manufacturing contracts with associated subcontractors, in-stock capacity, stated annual magnet productivity of 800 tons, export capability, and 71%–90% export sales. Quality assurance and raw-material traceability are reported. However, no SDK, overseas warehouse, overseas agents or branches, overseas showroom, or offline trade-show participation are reported. The supplier had no new products in the past year. Corrective-action and complaint-handling procedures exist but lack written records, while environmental and fire-drill statuses are unknown. No explicit certification information or named customer cases is provided.

Supplier typeThe supplier is explicitly described as a professional technical supplier and a combined company. It has self-operated import/export rights and has exported since 2011, indicating an established manufacturing and export-oriented supplier profile.

R&D capabilityThe supplier has R&D capability, provides 3D software design, and offers ODM services and several customization modes. Countervailing evidence includes no available SDK and no new products during the past year, so innovation is demonstrated mainly through design and customization rather than recent product development.

Production capacityThe supplier has valid manufacturing-capacity contracts with each associated subcontractor, in-stock capacity, 12 qualified service-capability suppliers, and reported annual magnet productivity of 800 tons. Export capacity and self-operated import/export rights further support operational capability.

Customization capabilityThe supplier explicitly provides customization from samples, designs, full customization, minor customization, and flexible customization, alongside 3D design, ODM, and OEM services. These are direct indicators of broad customization capability.

Product Q&A

Q:How fast can I get a reply?

You will receive our reply within 15 minutes during our work time 08:00-18:00(UTC-8).

Q:What information do I need to supply when I have a inquiry?

In order to get precise quotation on time,pls inform us following details when you send inquiry to us: Dimensions or drawing;Grade of Material;Magnetized direction; Surface coating(if necessary) ;Quantity and delivery terms. If you have don't have above information, you can inform us the application of the magnets, our technician will provide professional advice for you.

Q:Can you offer customized size and shape?

Yes, we could produce customized size,shape magnets according to customers' requirements.

Q:Can I have a free sample before mass production?

Yes. We could offer free samples if the magnets are in stock but you need to pay the delivery cost. It may take minimum 7 days for production if your size is out of stock.For neodymium magnets, we have many different size samples in stock.

Q:Can magnets could be shipped by air or by express ?

We could ship the magnets by air or by express with our magnetic shield package.