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  3. Ring magnets - Neodymium
  4. Power magnet, Ring 25x4x5 mm.

Power magnet, Ring 25x4x5 mm.

Product no.: MAGZ-431-P

Ring magnet with a Ø 4 mm. hole at the center (not countersunk). Buy one or more - large discount rates available to all EU customers.
Strength 9.4 kg.
When you buy more magnets, we send them to you with plastic separators (the white rings on the photo) for easier separation of the magnets. But be careful - these strong magnets will break when coliding at high speed.
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Price per unit:

6,24 7,80 EUR

Total: 6,24 7,80 EUR

In stock

Speedy delivery
We ship orders every day
30 days return policy

Details

Strength:
9,4 kg.
Shape:
Ring
Diameter:
25 mm.
Height:
5 mm.
Size:
25-04-05
Material:
Neodymium
Magnetisation:
N45
Glass board:
Yes
Outdoor use:
No
Color:
Silver

Technical drawing

Description

Neodymium ring magnet | Permanent magnets

A strong neodymium super magnet with a hollow core in the center. The surface is very large, and the hole is only 4mm (0.16 in./0.4 cm.) in diameter.

Diameter: 2.5 cm.
Height: 0.5 cm.
Hole size: 0.42 cm. 
Strength: approx. 9.4 kg.

Keep in mind, to achieve optimal levels of magnetism we recommend using the large surface, known as axial magnetism. This means that the magnet is magnetic on all sides, but you get the most strength from using the large surface instead of using the sides of the magnet.

These ring magnets are sold individually. On the right of this page, we offer large quantity purchasing options. Each bulk package offers a discount.

SPECIFICATIONS
Strength: approx. 9,400 g.
Material: NdFeB
Magnetism: N45
Max. temperature: 80°C
Surface: nickel coated (Ni-Cu-Ni)

NB! These magnets are normal ring magnets - not with countersunk hole.

Safety information

NB! Read this safety message about power magnets, before you buy and take the magnets into use.

Information