Neodymium Pot Magnets Manufacturer | Wholesale Cup & Mounting Magnets
- Fast samples and responsive engineers for technical support.
- Factory-direct pricing, stable supply, and fast production scheduling.
- OEM customization: size, thread, coating, packaging, laser marking.
- Strict QC: pull force testing, coating inspection, dimensional checks.
- Multiple mounting styles: countersunk, threaded, hook, eyelet, rectangular.
- Export-ready packaging with anti-magnetic protection for safe shipping.
Pot Magnet Specifications & Pull Force
Our neodymium pot magnets (cup/mounting magnets) are widely used for holding, clamping, and positioning ferrous parts on machines, workbenches, fixtures, and production lines. We manufacture pot magnet assemblies with NdFeB grades from N35 up to N56 (M/H/SH options available for higher-temperature needs), and support OEM customization for size, coating, and mounting structures.
Pull force note: all rated pull force values are measured under ideal conditions on a thick, clean, flat low-carbon steel plate with direct contact. In real applications, paint, rust, thin steel, air gaps, curved surfaces, vibration, and side/shear loads can reduce holding force significantly. Please share your surface condition and load direction so we can recommend the right model and safety factor.
Thread options: 1/4″-20, #8-32, #10-32, 5/16″-18, 1/2″-13, M6×1.0 and more. Custom thread sizes and mounting formats (countersunk/internal/external thread/hook/eyelet/rectangular) are available on request.
| Model | Diameter (mm) | Height (mm) | Mounting | Grade (Options) | Coating (Options) | Pull Force Test Condition |
|---|---|---|---|---|---|---|
| OS-PM-20 | 20 | 7 | External thread (1/4″-20) | N35–N56 (M/H/SH optional) | Ni / Zn / Epoxy | Clean, flat low-carbon steel, direct contact |
| OS-PM-25 | 25 | 8 | Internal thread (M6×1.0) | N35–N56 (M/H/SH optional) | Ni / Zn / Epoxy | Clean, flat low-carbon steel, direct contact |
| OS-PM-32 | 32 | 8 | External thread | N35–N56 (M/H/SH optional) | Ni / Zn / Epoxy | Clean, flat low-carbon steel, direct contact |
| OS-PM-40 | 40 | 8 | Countersunk hole | N35–N56 (M/H/SH optional) | Ni / Zn / Epoxy / Rubber | Clean, flat low-carbon steel, direct contact |
Neodymium pot magnets (also called pot magnets, cup magnets, or mounting magnets) are steel-cased NdFeB assemblies designed to deliver high holding force in a compact size. As a factory-direct manufacturer, Osenc supplies wholesale neodymium pot magnets in multiple mounting styles—countersunk, threaded (internal/external), hook, and eyelet—for workholding, fixtures, signs, and industrial equipment.
A pot magnet focuses the magnetic field on one working face by using a low-carbon steel cup. This structure increases practical pull force, protects the magnet, and makes installation safer and easier compared with a bare neodymium magnet.
At Osenc, we design high quality pot/cup magnet assemblies that use powerful rare earth neodymium pot magnets as the core. Our engineering team embeds powerful NdFeB magnets into a durable steel cup or channel to deliver high-strength pot magnets that are stable, safe and easy to mount.
Wholesale supply of Pot neodymium magnets
We offer wholesale supply of pot magnets in a wide range of sizes, pull forces and mounting styles to meet different industrial applications.
From compact cup magnets for light fixtures to heavy-duty assemblies for jigs and workholding, you can choose countersunk, internal/external thread, hook, or eyelet designs based on your installation needs.
For OEM projects, we also support custom diameters, cup thickness, coatings (Ni/Zn/epoxy), and magnet grades (N35–N56). We can recommend suitable models by load, surface conditions, and safety factor.
Quick OEM & Wholesale Info
- No MOQ. 1 pc is possible.
- Quality/Compliance: Medical-grade products are available; packaging can be done in a cleanroom environment.
- Standard production lead time is about 25 days.
- Shipping: Primarily via international express delivery, with a transit time of approximately 7 days
- Up to N56 neodymium magnet performance.
- Payment: PayPal or T/T (bank transfer).
OEM Capabilities, Quality & Packaging
- OEM/Private Label: Experienced in supplying international electronic component distributors for OEM projects.
- Size capability: From Ø0.2 mm up to Ø300 mm production.
- Customization (magnets): Grade/performance, coating, dimensions, and magnetization direction or multi-pole patterns.
- Compliance & quality: Medical-grade options available; cleanroom packaging supported when required.
Shipping & Delivery Options
- Express courier: Typical transit time ~7 days for time-sensitive projects.
- Sea freight: Possible for large-volume orders; customs inspection may add delays (up to ~1 month in some cases).
Pros & Cons
- Steel cup focuses flux, giving much higher pull in limited space.
- Field exits mainly from one face, reducing stray attraction and improving safety.
- Steel shell boosts efficiency and protects magnet from impact and repeated use.
- Multiple mounting options integrate quickly into jigs, tools, signs, and equipment.
- Paint, rust, gaps, thin steel, or uneven surfaces reduce real holding force.
- Any air gap or spacer causes pull force to drop sharply.
- Max temperature depends on magnet grade; choose material/coating for heat.
Osenc Dedicated to custom pot magnet production. Get the reliable pot neodymium magnets you need to complete your project with our help.
Types of Pot Magnets We Manufacture
1. Countersunk Pot Magnets (with mounting hole) 🔩
Best for
- Removable signs, panels, and display boards
- Fixtures, jigs, and positioning tools
- Whiteboards, brackets, and removable mounting points
- Installations needing a flush screw head and clean finish
Common specs
- Diameter: typically 10–80 mm (custom sizes available)
- Mounting: countersunk hole for common screws (M3–M10)
- Coatings: NiCuNi, Zinc, Epoxy (rubber coating optional)
- Performance: pull force varies by size and contact conditions
What affects pull force
- Full-face contact on steel is critical for rated pull
- Side loads/shear reduce effective holding significantly
- Surface condition matters: gaps, coatings, thin steel reduce force
- Safety: use 2–3× safety factor for real-world loads
OEM/Wholesale notes
We support custom countersunk geometry (angle/diameter/depth), cup thickness optimization, and magnet grades from N35–N56 (temperature grades available). Bulk packing, labeling, and anti-magnetic export packaging are available for wholesale orders.
2. Threaded Pot Magnets (internal / external thread) 🧰
Best for
- Equipment frames, machine covers, and automation fixtures
- Adjustable mounts and fast assembly/disassembly designs
- Jigs, clamps, sensor mounts, and modular tooling systems
- Applications requiring repeatable installation and replacement
Common specs
- Thread types: internal thread or external stud
- Thread sizes: M4/M5/M6/M8/M10 (inch threads on request)
- Coatings: NiCuNi, Zinc; Epoxy/rubber options for harsh use
- Profiles: low-profile cups and higher-depth designs available
What affects pull force
- Full-face contact on steel is critical for rated pull
- Side loads/shear reduce effective holding significantly
- Surface condition matters: gaps, coatings, thin steel reduce force
- Safety: use a 2–3× safety factor for real-world loads
OEM/Wholesale notes
We can customize thread depth, stud length, and thread standards to match your drawings. For OEM projects, our engineers can recommend suitable models based on load, surface conditions, and safety factors, with stable batch consistency for long-term supply.
3. Pot Magnet with Hook
Best for
- Hanging tools, cables, lights, signs, and accessories
- Warehouses, workshops, retail displays, and temporary setups
- No-drill mounting on steel beams, racks, and cabinets
- Applications needing quick relocation and reuse
Common specs
- Hook styles: fixed or swivel hooks (by model)
- Coatings: NiCuNi, Zinc, Epoxy; rubber coating protects surfaces
- Sizes: compact to heavy-duty options based on required load
- Connection: hook typically assembled via a threaded interface
What affects pull force
- Swinging loads and sideways pulling reduce stability
- Surface quality: paint/rust/gaps reduce real holding strength
- Thin or curved steel reduces performance noticeably
- Best practice: keep load direction as vertical as possible
OEM/Wholesale notes
We support custom hook shapes, rotation requirements, and connection threads. Wholesale kit packaging (magnet + hook sets), carton labeling, and export-safe packing are available for distributors and OEM partners.
4. Pot Magnet with Eyelet 🧿
Best for
- Suspension points, cable management, and tethering systems
- Signage systems and closed-loop connections
- Installations needing secure ring attachment
- Applications requiring controlled load connection
Common specs
- Eyelet/eyebolt designs with multiple thread sizes
- Ring diameter and thickness options based on load needs
- Coatings: NiCuNi, Zinc; Epoxy for stronger corrosion protection
- Compact cups available for tight installation spaces
What affects pull force
- Any tilt or misalignment reduces effective holding
- Shear load and vibration lower stability vs straight pull
- Surface condition and steel thickness are critical
- Always design with safety factor and real-use conditions
OEM/Wholesale notes
We can customize eyelet dimensions, ring thickness, and thread specifications for your application. For bulk orders, we provide batch pull-force verification and packaging designed to protect products and reduce magnetic interference during shipping.
5. Rectangular Pot Magnet with Countersunk 🧲
Best for
- Linear mounting on frames and narrow fixtures
- Door/cover holding and alignment applications
- Space-limited designs needing a strong working face
- Multi-point fastening with stable orientation
Common specs
- Rectangular cup design for better alignment and stability
- Custom hole spacing and countersunk geometry available
- Coatings: NiCuNi, Zinc, Epoxy (rubber optional)
- Sizes: customized length/width/height to match installations
What affects pull force
- Flat mating surface is essential for full-face contact
- Uneven surfaces cause rocking and major force loss
- Thin steel reduces pull force more than thick steel
- Gaps/coatings/curvature reduce real holding strength
OEM/Wholesale notes
We support custom dimensions, hole patterns, steel cup designs, and magnet grades (N35–N56, temperature grades optional) based on your drawings. Sampling and pull-force validation can be arranged before mass production.
Characteristics of Pot Magnet
Most of our pot magnet assemblies are built with a NdFeB (neodymium) core to deliver the highest holding force in a compact size, making them ideal for industrial workholding, fixtures, and mounting applications. For special requirements, we can also offer ferrite options for cost-sensitive projects and SmCo/AlNiCo options for higher-temperature environments, while keeping the same steel-cup design and mounting formats.
Applications of Pot Magnets
Magnetic Clamping and Workholding
Pot magnets are widely used in machining fixtures, welding jigs, assembly stations and positioning tools. The high holding force and convenient mounting make them ideal for fast set-up and flexible clamping on steel tables or frames.
Magnetic Hooks and Hanging Systems
Hook or eyebolt pot magnets are commonly used for hanging cables, lights, tools, signs and displays in warehouses, workshops, supermarkets and exhibitions. They can be mounted and removed rapidly without drilling holes.
Magnetic Sign and Display Mounting
Countersunk pot magnets combined with screws or bolts provide a neat solution for mounting removable signs, panels, whiteboards and advertising boards onto steel structures, shelves or vehicles.
Automation and Industrial Equipment
In automated production lines, pot magnets are used for part holding, positioning, sensors, doors and covers. The compact design and directional field help to stabilize components without adding complicated mechanical clamps.
Temporary Fixing and DIY Projects
For construction, furniture assembly, home improvement and DIY, pot magnets offer a convenient way to temporarily fix metal parts, tools and accessories, and can be reused many times.
Pot Magnet Buying Guide.
Pot magnets belong to the “top tier” of practical holding solutions because they convert the magnet’s energy into very efficient, usable pull force. However, before purchasing, you should evaluate the following factors:
1. Operating Environment & Temperature
Confirm the ambient temperature, humidity and whether the magnet will contact water, oil or chemicals. Choose suitable internal magnet materials (NdFeB / ferrite / AlNiCo) and coatings (nickel, zinc, epoxy, rubber, etc.) to ensure long-term performance and corrosion resistance.
2. Required Pull Force and Safety Factor
Define the minimum holding force you actually need and then add a safety factor, typically 2–3 times the working load. Remember: all catalog pull forces are measured under ideal conditions; real conditions usually give lower values.
3. Magnet Size and Shape
The diameter and height of the pot magnet directly affect its holding force and installation space. Select the size that matches your structure, and pay attention to whether you need low-profile, extra-strong or extended-height designs.
4. Mounting Style
Choose between countersunk hole, through hole, threaded stud, internal thread, hook, eye bolt, etc., according to your installation method. Good design of the mounting structure improves both safety and convenience in actual use.
5. Cost and Lifecycle
Pot magnets using high-grade neodymium cores provide stronger holding force but are more expensive than ferrite versions. In many projects, a slightly larger ferrite pot magnet can provide sufficient force at lower cost; in compact or high-force applications, neodymium pot magnets are usually more economical over the entire lifecycle.
Where to get Pot Magnets?
If you search in local retail stores, you may only find a few simple pot magnets with limited sizes and pull forces. The reasons are clear:
Most retail users only need a small selection of standard sizes.
High-performance neodymium pot magnets require specialized manufacturing and quality control.
Industrial users often need custom sizes, coatings and mounting styles that normal retail channels cannot provide.
For professional applications, the best way is to purchase pot magnets directly from a reliable source manufacturer. Buying from the source helps you to:
Get accurate and complete technical specifications
Customize size, pull force, coating and mounting style
Reduce cost through batch production and optimized design
When choosing a pot magnet manufacturer, pay attention to several key points:
Reputation and Experience
Choose a supplier with many years of experience in magnetic assemblies and pot magnet production. Proven application cases and long-term industrial customers mean more stable quality and performance.
Customization Capability
Pot magnets are often designed around specific fixtures, equipment and working conditions. The ability to customize dimensions, materials, coatings and accessories is crucial for achieving the best holding performance.
Engineering Support
Professional engineering support can help you select the right pot magnet model, calculate pull force under real conditions, and optimize your overall design to avoid over- or under-specifying magnets.
Delivery Time and Stability
Stable lead times and reliable production capacity ensure that your projects are not delayed. A good supplier can coordinate sample development, pilot runs and mass production according to your schedule.
We understand that finding a trustworthy pot magnet supplier is not always easy. That’s why we focus on long-term cooperation, offering reliable pot magnet assemblies and responsive technical support.
Whether you need standard cups or custom designs, Osenc supplies pot magnets in desired thread sizes of 1/4″-20, #8-32, #10-32, 5/16″-18, 1/2″-13 & M6 x 1.00 and many more. As a Global Supplier of Neo Pot Magnets, we support OEM projects with high-strength pot magnets, competitive pricing and fast delivery.
Contact us now to Choose from our selection of pot magnets, or send your drawing to get a custom solution.
FAQ
A pot magnet (also called a cup magnet or mounting magnet) is a permanent magnet housed inside a steel cup. The steel “pot” concentrates magnetic flux toward one working face, which typically delivers higher practical pull force than a bare magnet of the same size.
You can think of a pot magnet as a ready-to-use holding device made from three parts: a magnet core + a steel shell + a mounting structure. The core is usually NdFeB (neodymium) for maximum holding strength, while the steel cup improves magnetic efficiency and protects the magnet from impact.
Common mounting options include countersunk holes, through holes, internal/external threads, hooks, and eyelets, making pot magnets easy to integrate into fixtures, jigs, signs, tools, and industrial equipment.
Note: naming is not fully standardized worldwide. Depending on region and industry, the same product may be called cup magnets, mounting magnets, countersunk pot magnets, or threaded pot magnets.
Pot magnets are neodymium magnets inside a steel cup, which focuses the magnetic field on one working face, protects the brittle magnet from chipping, and makes mounting easier (countersunk/threaded options). Bare neodymium magnets are just the magnet itself—strong but more fragile, less controlled in the field, and usually harder to mount securely.
Choose countersunk pot magnets when you want a flush, low-profile mount directly onto a flat surface (screws sit level, clean look). Choose threaded pot magnets when you need more flexibility—bolting into brackets, adding hooks/arms, or making adjustable fixtures. For frequent install/removal, threaded is usually easier.
Common pot magnet coatings include Nickel (Ni), Zinc (Zn), Epoxy, and Rubber—each solves a different “real-world” problem. Ni (often Ni-Cu-Ni) is the most common: smooth, hard, good everyday corrosion resistance. Zn is a cost-effective choice for dry indoor use. Epoxy adds a thicker barrier for humidity/splash environments but can scratch if abused. Rubber is a protective sleeve that prevents slipping and surface scratches, and it reduces impact, but it also reduces pull force a bit. If you’re unsure: indoor/dry = Ni or Zn; humid/outdoor = Epoxy; delicate surfaces or anti-slip = Rubber.
For custom single magnets, the key specifications usually come down to four essentials: magnetic performance (material and grade to meet required pull force and operating temperature), coating/finish (e.g., Ni, Zn, epoxy, rubber, chosen based on humidity, corrosion risk, and chemicals), dimensions and tolerances (shape, size, and precision to ensure proper fit and consistent performance), and magnetization (direction and pattern—axial, radial, or multipole—plus quantity or pairing requirements), because these factors directly determine real-world holding strength, durability, and how the magnet behaves in your application.
Let‘s Realize Your Grand Plan Together
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