U Shaped Magnets | Neodymium U Magnets — Fullzen Factory Direct

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Fullzen U-shaped Neodymium Magnets cover a complete size range from tiny 5 mm micro types up to large 200 mm models, with pull force graded from 1.5 kg to 220 kg. They are widely applied in industrial fixtures, automation equipment, sensors, medical devices, material handling and other fields.

All products are made of sintered NdFeB, available in grades N35 to N52. Multiple surface coatings are optional including Ni‑Cu‑Ni, epoxy, zinc plating and Parylene. As an original manufacturer, Fullzen delivers consistent quality, competitive pricing and flexible custom services. Standard items ship within 3–5 days, while custom samples are ready in 7–10 days.

Below are four standard series of our U-shaped neodymium magnets, sorted by size and pull force for quick product selection. Not sure which model to pick? Contact our sales engineers directly, and you will receive selection recommendations within 12 hours.

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U-Shaped Magnet Product Lineup

Four standard series of neodymium U-shaped magnets — from heavy-duty industrial strength to precision miniature sizes. Find the right series for your application below.

https://www.fullzenmagnets.com/u-shaped-neodymium-magnets-custom/

Strong U-Shaped Magnets 5–95 kg Pull Force | Industrial Workhorse

Fullzen’s top-selling flagship series includes 8 standard models with evenly distributed pull force ranging from 5kg to 95kg. Available in full grades from N35 to N52, all models come with standard Ni-Cu-Ni triple nickel coating. The U-shaped structure provides concentrated magnetic fields, delivering 2 to 3 times stronger holding force than bar magnets of the same volume. This series is widely preferred for industrial fixtures, automated production lines and magnetic adsorption equipment. All standard models are in sufficient stock with stable supply.

Available in sizes from 25mm to 80mm across 8 standard models, with actual tested pull force ranging from 5kg to 95kg and grade options including N35, N42, N45, N48 and N52; typical applications cover industrial fixtures, automated positioning, welding jigs, inspection fixtures and door magnetic catches.

View full specifications of heavy-duty U-shaped neodymium magnets ！

https://www.fullzenmagnets.com/news/large-u-shaped-neodymium-magnets/

Large U-Shaped Magnets 80–220 kg Pull Force | Heavy-Duty Industrial

The large and extra-large U-shaped neodymium magnet series is engineered for heavy lifting and high industrial holding force requirements. A segmented assembly process is adopted to prevent cracking of large-size blanks, and optimized magnetic circuit design maximizes pull force per unit volume. Custom structures such as steel housing protection, lifting holes and threaded holes are available, with a safety factor of ≥3 times.

Available in sizes from 80mm to 200mm across 6 large models, with actual maximum tested pull force ranging from 80kg to 220kg and grade options including N35, N42, N45 and N48; typical applications cover heavy lifting, steel plate handling, mould fixing, marine industry and large machinery.

View full specs of large U-shaped neodymium magnets！

Horseshoe Neodymium Magnets Classic Horseshoe Profile, Modern NdFeB Strength

Classic horseshoe shape with a modern sintered NdFeB core, delivering 5 to 10 times stronger pull force than traditional Alnico horseshoe magnets. Its curved bottom design looks sleek and enables easy handheld installation. These magnets are widely used for teaching demonstrations, precision instruments, pickup tools and custom gifts. Fullzen is one of the few manufacturers in China capable of mass-producing NdFeB horseshoe magnets.

Available in sizes from 20mm to 100mm across 6 standard models, with pull force ranging from 3kg to 80kg and grade options including N35, N42, N45, N48 and N52; typical applications cover education & research, precision instruments, pickup tools, display props and custom gifts.

View full specifications of horseshoe neodymium magnets！

Small U-Shaped Magnets 1.5–8.5 kg Pull Force | Precision Miniature Series

The micro and small U-shaped neodymium magnet series is designed for consumer electronics, sensors and precision instruments. We can produce parts as tiny as 5mm, with precision tolerance of ±0.03mm and flux consistency within ±3%, ensuring highly consistent trigger points for sensors. High-end surface treatments including Parylene medical-grade coating and gold plating are available.

Available in sizes from 5mm to 25mm across 9 micro models, with pull force ranging from 1.5kg to 8.5kg and grade options including N35, N42, N45, N48, N50 and N52; typical applications cover consumer electronics, Hall sensors, reed switches, medical devices and precision instruments.

View full specifications of small U-shaped neodymium magnets！

Series Specification Comparison

Side-by-side comparison of all four U-shaped magnet series — use this table to quickly identify the right series for your application requirements.

A comparison overview of core parameters across the four series to help you quickly identify the right product line. Click each series page to view the full model specification sheet.

Series	Size Range	Pull Force Range	Grade Options	Tolerance	Key Applications
Strong U-Shaped	25 – 80 mm	5 – 95 kg	N35 – N52	±0.1 mm	Fixtures, automation, door catches
Large U-Shaped	80 – 200 mm	80 – 220 kg	N35 – N48	±0.15 mm	Heavy lifting, steel handling, molds
Horseshoe NdFeB	20 – 100 mm	3 – 80 kg	N35 – N52	±0.1 mm	Education, instruments, pickup tools
Small U-Shaped	5 – 25 mm	1.5 – 8.5 kg	N35 – N52	±0.03–0.05 mm	Electronics, sensors, medical devices
Custom Sizes	3 – 300 mm+	Custom	N35–N52, SH/UH/EH	Custom	Specialized applications

How to Choose the Right U-Shaped Magnet

Not sure which U-shaped magnet series is right for you? Use this quick selection guide based on your key requirements.

Five main factors should be considered when selecting U-shaped magnets. If you are still uncertain after reviewing the guide, send your application scenario and requirements directly to Fullzen’s sales engineers. We will provide professional selection recommendations within 12 hours.

1. Select by pull force requirement

Pull force is the most intuitive indicator for product selection. Choose the small series for light-duty holding under 10kg, the heavy-duty series for industrial applications ranging from 10kg to 80kg, and the large series for heavy lifting above 80kg. Note: The stated pull force is measured under ideal contact conditions. In real applications, air gaps, flatness of contact surfaces and material of the workpiece will affect the actual holding force. It is recommended to reserve a safety margin of 50–70% of the nominal value.

2. Select by mounting space

Confirm the available installation dimensions first, then pick the largest possible model within the space limit (larger volume equals stronger pull force). The pull force of U-shaped magnets mainly depends on magnet volume and pole area; a larger pole area delivers stronger attraction. If mounting space is limited but higher pull force is needed, consider upgrading the magnet grade (for example from N35 to N52) or adopting a steel housing magnetic concentration structure.

3. Select by operating temperature

NdFeB magnets have operating temperature limits. Exceeding the maximum temperature will cause irreversible demagnetization. Standard N grades (N35–N52) work up to 80°C, SH grade up to 150°C, UH grade up to 180°C and EH grade up to 200°C. If your application runs at elevated temperatures, make sure to select products with the corresponding high-temperature grade. Fullzen can provide high-temperature aging test verification.

4. Select by environment and coating requirements

Ni-Cu-Ni triple nickel coating works well for dry indoor environments. Epoxy coating offers better corrosion resistance for humid or outdoor conditions. Parylene coating or gold plating is recommended for medical and food equipment. Zinc plating or tin plating is suitable for scenarios requiring welding or electrical conductivity. NdFeB material is prone to oxidation and rust, so proper coating selection is critical to service life.

5. Select by precision requirement

Sensors and precision instruments demand tight dimensional tolerances and consistent magnetic performance. Our precision small series is recommended (±0.03mm tolerance, ±3% flux consistency). Standard tolerance (±0.1mm) is sufficient for regular industrial fixtures and lifting applications with better cost performance. Contact Fullzen for customization if higher precision is required.

Why U-Shaped Magnets Deliver Maximum Holding Force

The U-shaped configuration concentrates magnetic flux between the two poles — creating a focused, high-density magnetic field that delivers far more effective holding force than equivalent bar or block magnets.

U-shaped magnets are widely used in industrial adsorption, positioning and sensing applications mainly due to their unique magnetic circuit structure. Understanding this principle helps you judge whether U-shaped magnets fit your application and how to optimize dimension design.

Three major magnetic advantages of the U-shaped structure

• Concentrated magnetic field: The north and south poles are on the same end face. The magnetic field at the opening is highly focused, delivering 2 to 3 times the effective pull force of bar magnets with the same volume.

• Directional attraction: The magnetic field is clearly oriented and concentrated, suitable for applications requiring precise positioning and directional adsorption, such as fixtures, sensors and magnetic switches.

• Self-shielding effect: The magnetic field on the back of the U-shape is weak, reducing magnetic interference with surrounding electronic components. It outperforms bar magnets in precision equipment.

Fullzen’s engineering team offers FEM magnetic circuit simulation services. We optimize the opening ratio, pole spacing and dimension proportion of U-shaped magnets according to your application, to achieve maximum pull force within a limited volume. Many customers have optimized their dimension ratios with our recommendations and achieved over 30% higher pull force at the same material cost.

Industrial Applications

Fullzen U-shaped neodymium magnets serve six major industry sectors — where reliable holding force, precise positioning and consistent performance are critical.

With concentrated magnetic fields and strong pull force, U-shaped neodymium magnets have become indispensable basic functional components in modern industry. Below are the six major application sectors with the largest number of Fullzen customers.

Industrial Automation & Fixturing

Positioning jigs for automated production lines, welding fixtures, inspection tools and quick mold change systems. U-shaped magnets enable fast and reliable magnetic holding without mechanical locking, greatly improving the efficiency of line changeover and workpiece clamping. Fullzen heavy-duty series is the top choice for automation equipment manufacturers. Featuring stable pull force and impact resistance, these magnets operate reliably for long periods under continuous working conditions.

Material Handling & Lifting

Magnetic lifters, steel plate handling chucks, mold fixing and sheet metal adsorption. Large U-shaped magnets are widely used in material handling. Fullzen large series delivers a maximum pull force of 220kg. Custom steel housing protection and lifting holes are available with a safety factor ≥3 times. We supply bulk orders for multiple lifting equipment manufacturers.

Electronics & Sensor Technology

Magnetic structures for consumer electronics, Hall sensors, reed switches and proximity switches. Small U-shaped magnets are core components for the electronics and sensor industries. Fullzen precision micro series achieves dimensional tolerance of ±0.03mm and flux consistency of ±3%, guaranteeing highly consistent trigger points for every sensor. We provide mass supply to many well-known sensor manufacturers.

Automotive & Motor Systems

Automotive micro motors, wiper motors, door magnetic catches, headlight dimming motors and automotive sensors. The automotive industry demands high reliability and thermal stability for magnets. Fullzen SH and UH high-temperature grade U-shaped magnets are certified to IATF 16949, enabling stable supply for automotive tier 1 suppliers.

Medical & Healthcare Devices

Magnetic holding for medical instruments, diagnostic equipment, dental tools, rehabilitation devices and beauty devices. Medical applications impose strict requirements on magnet reliability and biocompatibility. Fullzen U-shaped magnets with Parylene coating have passed biocompatibility tests. The ISO 13485 medical quality management system ensures full traceability throughout production.

Education & Scientific Instruments

Physics teaching experiments, magnetic field demonstrations, precision measuring instruments and analytical equipment. Horseshoe and U-shaped magnets are classic products for education and scientific research. Fullzen NdFeB horseshoe magnets deliver several times stronger pull force than traditional Alnico magnets for more striking teaching demonstrations while retaining the classic appearance. Small-batch customization is available for educational institutions and research institutes.

Factory Direct Quality & Custom Options

Fullzen is a direct neodymium magnet manufacturer with 10+ years of experience — delivering consistent quality, competitive pricing and flexible customization for U-shaped magnets.

As an original manufacturer of U-shaped neodymium magnets, Fullzen owns a complete production line from raw blanks to finished goods, retaining direct control over every production stage. This translates to superior quality, shorter lead times, competitive pricing and robust customization capabilities.

Factory Direct Supply Advantages

Annual capacity of 500 tons, monthly output of 2 million U-shaped magnets, capable of handling large-volume orders

Full certifications including ISO 9001, IATF 16949, RoHS and REACH

Full-process quality control. 100% visual and dimensional inspection for finished products; 100% magnetic performance testing for key models

Customization Scope

- Custom sizes: 3mm – 300mm+, arbitrary length-width-height ratios and opening angles

- Custom grades: N35-N52 plus SH/UH/EH high-temperature grades, with optimal grade recommendations per application

- Custom coatings: Ni-Cu-Ni / Epoxy / Zinc plating / Parylene / Gold plating and others

- Custom structures: mounting holes, threaded holes, steel shell encapsulation, integrated assembly

- Sample lead time: 7–10 days; mass production lead time: 20–30 days, flexible MOQ

Explore Fullzen’s factory & manufacturing capacity →

Related U-Shaped Magnet Solutions

Explore more magnet products from Fullzen — beyond U-shaped magnets, we manufacture a full range of neodymium magnet configurations to meet diverse industrial requirements.

Strong U-Shaped Neodymium Magnets — 5–95kg Standard Pull Force, Ideal for Industrial Fixtures

Large U‑Shaped Neodymium Magnets – Oversized heavy‑duty types with pull force exceeding 200 kg, designed for magnetic separation and lifting equipment

Horseshoe Neodymium Magnets – Classic curved‑profile magnets, ideal for laboratory teaching instruments and precision devices

Small U‑Shaped Neodymium Magnets – Compact precision grades down to 5 mm, engineered for sensors and miniature machinery

U-Shaped Magnet Manufacturer | Fullzen Custom U Neodymium Magnets

Frequently Asked Questions

Common questions about U-shaped magnets — covering selection, magnetic strength, materials, customization and ordering.

What is the difference between U-shaped and horseshoe magnets?

U-shaped magnets feature a flat bottom and parallel sides, designed for industrial mounting and flat-surface adsorption, widely used in industrial fixtures and automation equipment. Horseshoe magnets have a curved bottom, the classic shape for teaching and pick-up tools. They share the same working principle: both adopt a U-shaped magnetic circuit with two poles oriented on the same side for concentrated magnetic flux. Fullzen manufactures both types of NdFeB magnets, with a separate product line for horseshoe magnets.

How much stronger is a U-shaped magnet than a bar magnet?

With the same volume and material, the effective pull force of a U-shaped magnet is typically 2–3 times that of a bar magnet. The U-shape concentrates the north and south poles on one side, creating a highly focused magnetic field at the opening. By contrast, bar magnets have poles at opposite ends with relatively dispersed magnetic flux. The exact multiplier depends on the opening ratio and pole spacing of the U magnet: narrower openings and smaller pole gaps deliver greater pull force gains.

How do I choose the right size U-shaped magnet?

Four key factors to select a proper U-shaped magnet:

Required pull force: reserve a safety margin of 50–70% of the rated value, since air gaps and uneven contact surfaces reduce effective pull force in real applications.

Mounting space: choose the largest possible model that fits within your available space.

Operating temperature: pick SH/UH/EH grades for high-temperature environments.

Environmental conditions: use epoxy or Parylene coating for humid or corrosive settings. If you are unsure, contact our Fullzen sales engineers for professional selection recommendations.

What is the strongest U-shaped magnet you offer?

Our most powerful U-shaped magnet is model FZ-UL200150 in the large series (200×150×30 mm, N45 grade), with a maximum tested pull force of approximately 220 kg. If higher pull force is needed, custom oversized magnets or steel shell magnetic concentrating structures are available. The steel shell design can boost pull force by an additional 30–50% at the same magnet volume. Please contact Fullzen’s engineering team for evaluation.

Can U-shaped magnets be used in high-temperature environments?

Yes, but you must select suitable high-temperature grades. Standard N grades (N35–N52) have a maximum working temperature of 80°C; SH grade up to 150°C; UH grade up to 180°C; EH grade up to 200°C. Exceeding the maximum operating temperature causes irreversible demagnetization. In addition, pull force at high temperatures will be lower than at room temperature, so extra margin should be reserved during selection. Fullzen can provide high-temperature aging tests and high-temperature pull force data.

What coating options are available for U-shaped magnets?

Fullzen supplies multiple coating options for U-shaped magnets:
Ni-Cu-Ni triple nickel coating: most popular, nice appearance and moderate corrosion resistance
Black epoxy coating: excellent corrosion resistance, suitable for outdoor and humid environments
Zinc plating: cost-effective for general industrial use
Parylene coating: ultra-thin, uniform, biocompatible, for medical and high-end electronics
Gold plating: great conductivity and premium finish, for high-end electronics and connectors
Custom coatings are available upon request.

What is the minimum order quantity for U-shaped magnets?

We offer low MOQ for standard models: 100 pcs for high-power series, 10 pcs for large series, 100–500 pcs for small-size series, and 200 pcs for horseshoe series. MOQ for custom magnets depends on process complexity, generally ranging from 500 to 5000 pcs. For customers in the R&D phase, Fullzen provides flexible small-batch sampling solutions to validate designs at minimal cost.

Do you offer samples before bulk ordering?

Yes. Fullzen highly recommends sample confirmation before mass production. Samples of standard items are free, while the customer covers shipping freight. Custom samples incur a small tooling/sample fee, which can be deducted from mass order payment. Each sample comes with an inspection report covering dimensions, magnetic performance, coating thickness and other critical parameters. Mass production starts only after sample approval to align expectations on both sides.

How long does delivery take?

In-stock standard models ship within 3–5 days. Non-stock standard items take 15–20 days for production. For custom products: 7–10 days for sampling, and 20–30 days for mass production (counted from drawing confirmation and deposit receipt). Fullzen maintains flexible production scheduling. Rush orders are available, with mass delivery as fast as 10 days.

Are U-shaped magnets safe to handle?

NdFeB U-shaped magnets are extremely strong, please follow these safety notes:

1. Large and high-strength U-shaped magnets carry high pinching risk; wear protective gloves during handling.

2. Magnets may crack and splinter when snapping together; keep a safe distance.

3. Keep away from pacemakers and other medical implants.

4. Keep away from magnet-sensitive items including bank cards, mobile phones and watches.

5. Keep out of reach of children.

Fullzen includes safety handling instructions with all shipments.

Request Your Free Quote Today

From standard specifications to fully customized solutions, Fullzen U-shaped neodymium magnets deliver stable, high-strength magnetic performance for industrial fixturing, automation, and special environmental applications.

Share your U‑shaped neodymium magnet dimensions, magnetization requirements and end‑application details, and Fullzen’s professional engineering team will deliver customized technical solutions and a quotation within 24 hours.