Ferrite Countersunk Pot Magnets SWF4
Description
Reviews
As a leading ferrite pot magnet manufacturer in China, MAG SPRING offers high-performance Ferrite Countersunk Pot Magnets (also known as Ferrite Countersunk Cup Magnets or Ceramic Countersunk Base Magnets). These economical mounting magnets consist of a strong ferrite magnet encased in a steel cup with a countersunk hole, providing reliable holding force for secure screw mounting, lifting, holding, and fixing in construction, engineering, automotive, office, warehouse, and home applications.
Product Overview
Ferrite Countersunk Pot Magnets, also called ferrite base round magnets with countersunk hole, feature a ferrite (ceramic) magnet housed in a steel cup with a countersunk central hole. The steel housing concentrates the magnetic force on the exposed face while the countersunk design allows flush screw mounting for a neat and secure installation. They offer a cost-effective solution for applications requiring reliable magnetic holding with easy screw fixing.
At MAG SPRING, we provide standard models (SWF4 series) with holding forces from 14N to 90N and full customization for special sizes and requirements.
Technical Specifications
| MODEL NO | Dimensions(mm) | Weight(g) | Force(N) | |||
|---|---|---|---|---|---|---|
| D | H | d1 | d2 | |||
| SWF4-16 | 16 | 4.5 | 3.5 | 6.5 | 4 | 14 |
| SWF4-20 | 20 | 6 | 4.2 | 8.6 | 9 | 27 |
| SWF4-25 | 25 | 7 | 5.5 | 10.4 | 16 | 36 |
| SWF4-32 | 32 | 7 | 5.5 | 10.4 | 27 | 72 |
| SWF4-40 | 40 | 8 | 5.5 | 10.4 | 53 | 90 |
Protective Coatings
To improve corrosion resistance and extend service life, our Ferrite Countersunk Pot Magnets support a variety of surface treatments:
- Zn (Zinc): Cost-effective protection for general environments
- Ni (Nickel): Bright finish with good corrosion resistance
- Cr (Chrome): Additional decorative and protective layer
- Painting: Suitable for humid or decorative applications
- Custom Coatings: Available based on customer special requirements
Applications
Ferrite Countersunk Pot Magnets are widely used for:
- Construction and Engineering: Flush mounting of signs, panels, or equipment
- Automotive and Machinery: Secure component mounting with screws
- Metalworking and Mechanical Plants: Tool holders and fixtures
- Office, Home, and Warehouse: Hanging tools, displays, or organizers
- Retail and Displays: Neat and secure signage installation
Advantages
- Cost-effective ferrite magnet with stable holding force (14–90N)
- Countersunk hole design allows flush screw mounting for a clean finish
- Steel cup concentrates magnetic force and protects the magnet
- Customizable sizes and holding force available
- Excellent value for money compared to neodymium alternatives
- Low MOQ and flexible production for prototypes and bulk orders
- RoHS compliant and environmentally friendly
Production and Delivery
- Production Lead Time: 7–35 days (standard 30 days)
- Minimum Order Quantity: 50 pieces (samples available)
- Packaging: Standard export brown carton or wooden case
- Custom Packaging: Available based on customer requirements
- Logistics: Reliable global shipping via Ningbo or Shanghai ports
- Payment Terms: T/T
- Customized Service: Tailored dimensions and specifications supported
Quality and Compliance
Our Ferrite Countersunk Pot Magnets are produced under strict quality control systems to ensure stable performance and high consistency:
- Precision machining and dimension control
- Magnetic holding force testing and verification
- Coating quality inspection for corrosion resistance
- Full compliance with EU RoHS environmental standards
Certifications & Compliance
- ISO9001 Quality Management System Certified
- ISO14001 Environmental Management System Certified
- Products fully comply with EU RoHS Directive
FAQs
Q: What materials are your Ferrite Countersunk Pot Magnets made of?
A: High-quality ferrite (ceramic) magnets encased in a steel cup with countersunk hole.
Q: Can you customize the size and holding force?
A: Yes, we provide custom diameters, hole sizes, and specifications to match your application.
Q: What is the MOQ and lead time?
A: MOQ is 50 pieces; samples are available. Lead time is normally 7 to 35 days.
Q: Are they suitable for outdoor use?
A: Yes, with Zn, Ni, or Painting coatings, they offer good corrosion resistance for indoor and outdoor environments.
About Us
As a leading MAG SPRING was founded in 2003 and located in Ningbo, Zhejiang, China. We are a professional manufacturer of magnetic application products, focusing on the R&D, design and production of NdFeB magnets, magnetic filters and various magnetic components.
The company has professional technical teams and advanced production equipment, operating strictly in accordance with the ISO9001 quality management system. We also focus on environmental protection and hold ISO14001 certification. All our products meet EU RoHS requirements.
Adhering to the enterprise tenet of "Efficiency, Perfection, Harmony and Dedication" and the slogan "Everything We Handle Must Be Excellent", MAG SPRING has rich experience in magnet R&D, production and sales. Our products are widely recognized by customers worldwide. We look forward to cooperating with you with high-quality products, competitive prices and professional services.
