•

SKU: ND078-8

Neodymium Magnets 2.5 in x 1 in Rare Earth Disc N42

$ 92.00
$ 92.00

∼ Top Grade Materials Only ∼ Quality You Can Trust ∼ Trusted By Thousands Of Vendors ∼ Top Grade Materials Only ∼ Quality You Can Trust ∼ Trusted By Thousands Of Vendors ∼ Top Grade Materials Only ∼ Quality You Can Trust ∼ Trusted By Thousands Of Vendors ∼ Top Grade Materials Only ∼ Quality You Can Trust ∼ Trusted By Thousands Of Vendors ∼ Top Grade Materials Only ∼ Quality You Can Trust ∼ Trusted By Thousands Of Vendors ∼ Top Grade Materials Only ∼ Quality You Can Trust ∼ Trusted By Thousands Of Vendors ∼ Top Grade Materials Only ∼ Quality You Can Trust ∼ Trusted By Thousands Of Vendors ∼ Top Grade Materials Only ∼ Quality You Can Trust ∼ Trusted By Thousands Of Vendors ∼ Top Grade Materials Only ∼ Quality You Can Trust ∼ Trusted By Thousands Of Vendors ∼ Top Grade Materials Only ∼ Quality You Can Trust ∼ Trusted By Thousands Of Vendors ∼ Top Grade Materials Only ∼ Quality You Can Trust ∼ Trusted By Thousands Of Vendors ∼ Top Grade Materials Only ∼ Quality You Can Trust ∼ Trusted By Thousands Of Vendors ∼ Top Grade Materials Only ∼ Quality You Can Trust ∼ Trusted By Thousands Of Vendors ∼ Top Grade Materials Only ∼ Quality You Can Trust ∼ Trusted By Thousands Of Vendors ∼ Top Grade Materials Only ∼ Quality You Can Trust ∼ Trusted By Thousands Of Vendors ∼ Top Grade Materials Only ∼ Quality You Can Trust ∼ Trusted By Thousands Of Vendors ∼ Top Grade Materials Only ∼ Quality You Can Trust ∼ Trusted By Thousands Of Vendors ∼ Top Grade Materials Only ∼ Quality You Can Trust ∼ Trusted By Thousands Of Vendors ∼ Top Grade Materials Only ∼ Quality You Can Trust ∼ Trusted By Thousands Of Vendors ∼ Top Grade Materials Only ∼ Quality You Can Trust ∼ Trusted By Thousands Of Vendors

2.5" x 1" N42 Neodymium Disc Magnets – Strong Rare Earth Magnets

Quick Facts

Attribute Value
Magnet Type Neodymium Rare Earth Disc Magnet
Grade N42
Shape Disc
Diameter 2.5" (63.5 mm)
Thickness 1" (25.4 mm)
Pull Force Approximately 245 lbs*
Material NdFeB (Neodymium-Iron-Boron)
Coating Nickel-Copper-Nickel (Ni-Cu-Ni) Triple Layer
Magnetization Through Thickness (Axially Magnetized)
Br Max 13,200 Gauss
Certification ISO Certified

*Note: Actual pull force may vary depending on the application, contact surface, steel thickness, air gap, and mounting method. Due to the extremely high magnetic force, proper handling and safety precautions are strongly recommended.

Quick Answers

Question Answer
How strong is this magnet? Approximately 245 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. N42 delivers significantly greater magnetic strength than 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? Heavy-duty magnetic fixtures, industrial machinery, magnetic separators, robotics, engineering projects, manufacturing equipment, and scientific applications.

Product Overview

These 2.5" x 1" N42 Neodymium Disc Magnets are designed for industrial and commercial applications requiring exceptional holding power and a deep magnetic field. The 2.5-inch diameter provides a large magnetic contact area, while the 1-inch thickness generates an impressive 245 pounds of pull force under ideal conditions. Their substantial size and strength make them ideal for heavy-duty magnetic assemblies, industrial tooling, and demanding engineering projects.

Manufactured from premium N42 grade NdFeB (Neodymium-Iron-Boron), these magnets deliver significantly greater magnetic performance than N40, N38, and N35 grades while offering excellent value for high-strength applications. They are commonly used in manufacturing, robotics, automation systems, magnetic separators, scientific equipment, heavy-duty fixtures, and custom engineering projects where dependable magnetic force is essential.

Each magnet is protected with a durable Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer coating, providing outstanding resistance to corrosion, scratches, and chipping while maintaining a smooth, polished finish. Manufactured in ISO-certified facilities, these magnets deliver consistent quality, superior durability, and reliable long-term 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 manufacturing, robotics, engineering, automation, scientific research, motors, generators, and industrial machinery.

This magnet is magnetized through its 1-inch thickness (axially magnetized), placing the north and south poles on the two flat circular faces. This magnetic orientation produces maximum holding force against ferromagnetic surfaces, making disc magnets ideal for industrial fixtures, heavy-duty magnetic assemblies, and precision positioning systems.

Neodymium magnets are also commonly known as Neo magnets, NdFeB magnets, NIB magnets, or super magnets.

How Strong Is This Magnet?

This 2.5" x 1" N42 disc magnet delivers approximately 245 pounds of pull force under ideal laboratory conditions using a thick, clean steel plate.

Actual holding force depends on several factors, including:

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

Because of its large size and extremely powerful magnetic field, this magnet should be handled carefully to avoid pinching injuries or damage to nearby objects.

Note: Pull force values are estimates based on ideal laboratory conditions. Actual performance should always be verified in your intended application.

Technical Specifications

Specification Value
Magnet Type Neodymium Rare Earth Disc Magnet
Grade N42
Shape Disc
Diameter 2.5" (63.5 mm)
Thickness 1" (25.4 mm)
Pull Force Approximately 245 lbs*
Material NdFeB (Neodymium-Iron-Boron)
Coating Nickel-Copper-Nickel Triple Layer
Magnetization Through Thickness (Axially Magnetized)
Br Max 13,200 Gauss
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
N52 Maximum High-performance

Disc Magnet Size Comparison

Size Typical Use
Small Crafts & sensors
Medium General holding
Extra Large (2.5" × 1") Industrial machinery, magnetic separators, heavy-duty fixtures, and engineering systems

Applications by Industry

Industry Common Uses
Manufacturing Heavy-duty fixtures & jigs
Industrial Magnetic separators & machinery
Robotics Positioning & automation
Engineering Prototypes & specialized equipment
Scientific Laboratory research & testing
Energy Motors, generators & magnetic assemblies

Common Questions About This Magnet

What is the pull force?

This magnet provides approximately 245 pounds of pull force under ideal testing conditions.

Is N42 stronger than N35 magnets?

Yes. N42 delivers significantly greater magnetic strength and holding power than N35 magnets of the same dimensions.

Can it rust?

The Nickel-Copper-Nickel triple-layer coating provides excellent protection against corrosion. If the coating becomes damaged and moisture reaches the magnet, corrosion may eventually occur.

Can it be used outdoors?

Yes. However, additional sealing is recommended for prolonged outdoor exposure, marine environments, or high-humidity conditions.

What direction is it magnetized?

This magnet is magnetized through its 1-inch thickness (axially magnetized), with the north and south 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 rare earth magnets
  • ISO-certified quality
  • High-performance N42 magnetic grade
  • Durable Nickel-Copper-Nickel triple-layer coating
  • Exceptional magnetic strength and holding power
  • Precision manufacturing
  • Excellent corrosion resistance
  • Competitive pricing
  • Bulk discounts available
  • Fast shipping
  • Trusted by manufacturers, engineers, researchers, educators, and DIY professionals worldwide


Frequently Bought Together

Total price$ 181.46

Complementary products

    • Free Shipping To US

      Free For All Orders. Minimum Required.

    • 30 - Day Return Policy

      Order Wthout Worry

    • Fast Delivery Time

      3-5 Days Shipping Time