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SKU: NB072

Neodymium Magnets N42 Bar 3 in x 1/2 in x 1/8 in Strong Magnets

$ 6.55
$ 6.55

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N42 Neodymium Bar Magnet 3" x 1/2" x 1/8" Thick Rare Earth NdFeB Magnet

Quick Facts

Attribute Value
Magnet Type Neodymium Rare Earth Bar Magnet
Grade N42
Shape Bar / Block
Length 3" (76.2 mm)
Width 1/2" (12.7 mm)
Thickness 1/8" (3.18 mm)
Pull Force Approx. 20 lbs
Material NdFeB (Neodymium-Iron-Boron)
Coating Nickel-Copper-Nickel (Ni-Cu-Ni)
Magnetization Through Thickness
Br Max 13,200 Gauss
Certification ISO Certified

Quick Answers

Question Answer
How strong is this magnet? Approximately 20 lbs of pull force under ideal conditions.
Is N42 stronger than N35? Yes. N42 provides greater magnetic strength than N40, N38, and N35 grades.
What is this magnet made of? Neodymium Iron Boron (NdFeB) rare earth material.
Which surfaces contain the poles? The north and south poles are located on the 3" × 1/2" faces.
What applications is it best for? Industrial fixtures, magnetic holding, robotics, woodworking jigs, automation equipment, and engineering projects.

Product Overview

Neodymium magnets are the world's strongest commercially available permanent magnets. Super Magnet Store offers premium-quality N42 neodymium bar magnets manufactured to stringent quality standards using advanced production technology. These magnets provide dependable magnetic strength, consistent performance, and long-lasting durability for industrial, commercial, and engineering applications.

This N42 neodymium bar magnet measures 3" x 1/2" x 1/8" and generates approximately 20 lbs of pull force under ideal conditions. Manufactured from neodymium, iron, boron, and other rare earth elements, it delivers stronger magnetic performance than N40, N38, and N35 grades.

The Nickel-Copper-Nickel triple-layer coating provides excellent protection against corrosion and wear, helping extend service life even in demanding work environments. Manufactured under ISO-certified quality standards, this magnet offers reliable magnetic performance for a wide range of industrial applications.

What Is a Neodymium Bar Magnet?

A neodymium bar magnet is a rectangular rare earth permanent magnet manufactured from neodymium, iron, and boron (NdFeB). Its long, narrow profile provides a large magnetic contact area while maintaining a compact size, making it ideal for magnetic fixtures, automation systems, robotics, tooling, sensors, and custom engineering projects.

How Strong Is This Magnet?

This N42 neodymium bar magnet generates approximately 20 lbs of pull force under ideal conditions. Actual holding strength depends on steel thickness, surface finish, air gaps, operating temperature, and mounting configuration. With a Br Max rating of 13,200 Gauss, it provides reliable magnetic performance for industrial and commercial use.

Technical Specifications

Specification Value
Product Name N42 Neodymium Bar Magnet
Material Neodymium Iron Boron (NdFeB)
Grade N42
Shape Bar / Block
Dimensions 3" × 1/2" × 1/8"
Coating Nickel-Copper-Nickel Triple Layer
Magnetization Direction Through Thickness (1/8")
Pole Orientation On the 3" × 1/2" Faces
Pull Force Approx. 20 lbs
Br Max 13,200 Gauss
Certification ISO Certified
Maximum Operating Temperature 176°F (80°C)

Note: Pull force is measured under ideal laboratory conditions using a clean, flat steel surface. Actual performance may vary depending on the application.

Magnet Grade Comparison

Grade Relative Strength Typical Applications
N35 Standard General-purpose magnetic assemblies
N38 Moderate Consumer products
N40 High Industrial equipment
N42 Higher Engineering and manufacturing
N45 Premium High-performance industrial assemblies
N48 Very High Heavy-duty applications
N50 Ultra High Advanced automation
N52 Maximum Maximum-performance industrial systems

Common Applications

  • Industrial fixtures and tooling

  • Magnetic holding systems

  • Robotics and automation

  • Woodworking jigs

  • Sensor mounting

  • Product prototyping

  • Scientific instruments

  • Engineering projects

Frequently Asked Questions

How much weight can this magnet hold?

This magnet provides approximately 20 lbs of pull force under ideal conditions. Actual holding capacity depends on the steel surface, alignment, air gaps, and installation method.

Is N42 stronger than N35?

Yes. N42 offers significantly greater magnetic energy and holding force than N35 magnets of the same size.

What direction is it magnetized?

The magnet is magnetized through the 1/8-inch thickness, with the north and south poles located on the 3" × 1/2" faces.

Can this magnet be used outdoors?

The Nickel-Copper-Nickel coating offers excellent corrosion resistance. For continuous outdoor or marine exposure, we recommend sealing the magnet or installing it in a protective housing.

What is the maximum operating temperature?

This standard N42 magnet is designed for continuous operation up to 176°F (80°C). Higher temperatures may permanently reduce magnetic strength.

Do you offer wholesale pricing?

Yes. Contact Super Magnet Store for competitive wholesale pricing and volume discounts on N42 neodymium bar magnets.

Safety Notice

Neodymium magnets are extremely powerful and can snap together unexpectedly, causing pinch injuries or chipping. Keep away from children, pacemakers, sensitive electronics, and magnetic storage devices. Always review magnet safety guidelines before handling or installation.

Why Buy From Super Magnet Store?

  • Premium NdFeB rare earth magnets

  • High-strength N42 magnetic performance

  • Approximate 20 lb pull force

  • Strong 13,200 Gauss magnetic field

  • Nickel-Copper-Nickel triple-layer coating

  • ISO-certified manufacturing

  • Wholesale pricing available

  • Superior quality and consistent performance guaranteed

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Total price$ 10.31

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