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SKU: ND070-6

Neodymium Rare Earth Magnets N45 2 in x 1/8 in Disc

$ 10.15
$ 10.15

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2" x 1/8" N45 Neodymium Disc Magnets – Large Rare Earth Magnets

Quick Facts

Attribute Value
Magnet Type Neodymium Rare Earth Disc Magnet
Grade N45
Shape Disc
Diameter 2" (50.8 mm)
Thickness 1/8" (0.125" / 3.18 mm)
Pull Force Approximately 29 lbs*
Material NdFeB (Neodymium-Iron-Boron)
Coating Nickel-Copper-Nickel (Ni-Cu-Ni) Triple Layer
Magnetization Through Thickness (Axially Magnetized)
Br Max 13,800 Gauss
Certification ISO Certified

*Note: Actual pull force may vary depending on the application, contact surface, steel thickness, air gap, and mounting method. Testing in your specific application is recommended.

Quick Answers

Question Answer
How strong is this magnet? Approximately 29 lbs of pull force under ideal conditions.
What is this magnet made of? NdFeB (Neodymium-Iron-Boron) rare earth material.
Is this stronger than N35 magnets? Yes. N45 provides greater magnetic strength than N42, N40, N38, and N35 magnets of the same size.
Can it be used outdoors? Yes, but additional sealing is recommended for long-term outdoor or marine environments.
What is it commonly used for? Sensor arrays, instrument housings, magnetic closures, scientific equipment, display fixtures, and industrial mounting applications.

Product Overview

These 2" x 1/8" N45 Neodymium Disc Magnets combine a large magnetic surface with a slim profile, making them ideal for applications requiring broad magnetic coverage without excessive thickness. The 2-inch diameter provides excellent surface contact, while the 1/8-inch thickness keeps the installation low profile. Under ideal conditions, this magnet delivers approximately 29 pounds of pull force, making it suitable for medium-duty industrial, commercial, and engineering applications.

Manufactured from premium N45 grade NdFeB (Neodymium-Iron-Boron), these magnets provide stronger magnetic performance than N42, N40, N38, and N35 grades while offering an excellent balance between holding strength and cost. They are commonly used in sensor arrays, magnetic closures, control panels, scientific instruments, display systems, product assemblies, and precision alignment applications.

Each magnet is protected by a durable Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer coating, providing excellent resistance to corrosion, scratches, and chipping while maintaining a smooth, polished finish. Manufactured in ISO-certified facilities, these magnets deliver dependable quality and consistent magnetic performance.

What Is a Neodymium Disc Magnet?

A neodymium disc magnet is a permanent NdFeB (Neodymium-Iron-Boron) magnet manufactured from an alloy of neodymium, iron, and boron. Neodymium magnets are the strongest commercially available permanent magnets and are widely used in industrial equipment, automation, electronics, scientific instruments, manufacturing, and consumer products.

This magnet is magnetized through its 1/8-inch thickness (axially magnetized), placing the north and south poles on the two flat circular faces. This magnetic orientation maximizes surface contact and holding power, making disc magnets ideal for flush-mounted applications, magnetic fixtures, sensor systems, and precision assemblies.

How Strong Is This Magnet?

This 2" x 1/8" N45 disc magnet produces approximately 29 pounds of pull force under ideal laboratory conditions using a thick, clean steel surface.

Actual holding force depends on several factors, including:

  • Surface material
  • Steel thickness
  • Contact area
  • Air gap
  • Mounting method
  • Environmental conditions

For maximum holding performance, mount the magnet against a clean, flat steel surface with full contact.

Technical Specifications

Specification Value
Magnet Type Neodymium Rare Earth Disc Magnet
Grade N45
Shape Disc
Diameter 2" (50.8 mm)
Thickness 1/8" (3.18 mm)
Pull Force Approximately 29 lbs*
Material NdFeB (Neodymium-Iron-Boron)
Coating Nickel-Copper-Nickel Triple Layer
Magnetization Through Thickness (Axially Magnetized)
Br Max 13,800 Gauss
Weight Approximately 0.10 lbs
Certification ISO Certified

Magnet Grade Comparison

Grade Relative Strength Typical Applications
N35 Standard General purpose
N38 Moderate Consumer products
N40 High Industrial
N42 Higher Engineering
N45 Very High Industrial equipment and precision assemblies
N52 Maximum High-performance

Disc Magnet Size Comparison

Size Typical Use
Small Crafts & sensors
Medium General holding
Large (2" × 1/8") Sensor arrays, instrument mounting, magnetic closures, industrial panels

Applications by Industry

Industry Common Uses
Manufacturing Fixtures & magnetic assemblies
Robotics Sensor alignment & positioning
Electronics Instrument housings & magnetic mounting
Scientific Laboratory equipment & demonstration kits
Retail Displays & signage
DIY Cabinet closures & custom projects

Common Questions About This Magnet

What is the pull force?

This magnet delivers approximately 29 pounds of pull force under ideal testing conditions.

Is N45 stronger than N35 magnets?

Yes. N45 provides substantially greater magnetic strength and holding power than N35 magnets of the same dimensions.

Can it rust?

The Nickel-Copper-Nickel triple-layer coating offers excellent corrosion resistance. If the coating is damaged, exposure to moisture may eventually cause corrosion.

Can it be used outdoors?

Yes, although additional sealing is recommended for extended outdoor, marine, or high-humidity environments.

What direction is it magnetized?

This magnet is magnetized through its 1/8-inch thickness (axially magnetized), with the magnetic poles located on the two flat circular faces.

Do you offer bulk discounts?

Yes. Contact Super Magnet Store for wholesale pricing and volume discounts on commercial, industrial, OEM, educational, and reseller orders.

Why Buy From Super Magnet Store?

  • Premium NdFeB magnets
  • ISO-certified quality
  • High-performance N45 magnetic grade
  • Durable Nickel-Copper-Nickel triple-layer coating
  • Consistent magnetic performance
  • Precision manufacturing
  • Excellent corrosion resistance
  • Competitive pricing
  • Bulk discounts available
  • Fast shipping
  • Trusted by manufacturers, engineers, educators, researchers, and DIY professionals


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