Magnetic Cartridges

An introduction to Magnetic Cartridges

Magnetic Cartridges

Magnetic Cartridges are also known as Magnetic Separator Rods, Magnetic Cylinders and Magnetic Tubes. They are used to remove ferrous contaminants from products passing directly over their surface. They can be used on their own or can be incorporated into custom Separator Grates / Separator Grids.

The standard diameter for the Magnetic Cartridges / Magnetic Separator Rods is 1” (1 inch or 25.4mm). The range of lengths available to buy online is from 4” to 24”. Choose Ferrite Cartridges for attracting large ferrous objects like screws, washers, nuts etc. Choose Neodymium Cartridges for smaller screws, nuts, and metal chips. Choose High Intensity Neodymium Cartridges for swarf and small particles.

Thanks to computer-aided design technology, Bunting Cartridges are engineered to achieve the optimum balance between reach out and holding force. Cartridges can be mounted individually or in multiple-row arrays. The cartridge centre to centre distance between trays should not exceed 2”. The cartridges usually come with pre-tapped ends and are made from durable stainless steel.

The majority of Separator Magnet Rods contain NdFeB Rare Earth magnets but versions containing Ferrite magnets, SmCo Rare Earth magnets and Alnico magnets also exist. The NdFeB versions come as standard strength and high intensity strength as the two main options. They are all encased in a food quality stainless steel (usually SS304 but SS316 is also offered). By having a food quality stainless steel casing, the Separator magnet Rods are corrosion resistant and easy to clean.

The “standard” Separator Rod is SS304 encased, contains NdFeB magnets, offers 10kGauss (1 Tesla) at multiple locations along its length, is 25mm in diameter available in lengths varying from 50mm up to 500mm in 50mm increments, has M8 tapped holes at the ends and is rated to work in temperatures up to +80 deg C. We can offer variations from this standard design as well.

The Standard NdFeB Separator Magnet Rods are rated for a maximum recommended operating temperature of around +80 degrees C. The Separator Rods can be produced for higher rated maximum operating temperatures upon request. The maximum operating temperatures available are +80, +100, +120, +150, +180 and +200 degrees C. When working above +180 degrees C, the SmCo separator magnet version may be a better choice as it more powerful than NdFeB above +180 degrees C and can also be used up to +350 degrees C (for note, SmCo versions are 9000Gauss typically at room temperature). Less commonly used Ferrite versions are also available but are much weaker (Ferrite versions are 1500Gauss typically at room temperature but work up to +150 degrees C).

The field strength from any magnet will drop with rising temperature - this is normal (the decrease in performance is linked to the characteristics of the permanent magnet used). The field output will return again as it cools (if the maximum operating temperature is not exceeded). Exceeding the maximum operating temperature causes a permanent irreversible drop in performance.

The e-Magnets UK and Bunting Magnetics separator rods are ideal for capturing ferrous contamination. They are capable, particularly with the more powerful units, of capturing ferromagnetic and ferrimagnetic materials as well as materials with permeability noticeably greater than 1, such as some of the paramagnetic and antiferromagnetic materials. For maximum capture the debris really need to get into direct contact with the Magnetic Cartridges / Magnetic Separator Rods.

You can make or modify you own separation system with Bunting Magnetic Cartridges. They are all constructed of durable 304 stainless steel tubing and are available with threaded hole, threaded bar, or plain sealed end plugs. Each cartridge is filled with Ceramic, SmCo, Alnico, Neodymium or Neodymium High Intensity magnetic material. Custom lengths are available. Please call for more information.

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Types of Magnetic Cartridges

Our Range

Volume Pricing

Buy Online

Part No. Size Grade Pull (kgs)
C-4006-CR Diam 1x6 Inch Ceramic Magnetic Cartridges N/A
C-4006-CR
Diam 1x6 Inch Ceramic
Magnetic Cartridges
N/A
C-4006-NPB Diam 1x6 Inch Neo Power Balance Magnetic Cartridges N/A
C-4006-NPB
Diam 1x6 Inch Neo Power Balance
Magnetic Cartridges
N/A
C-4006-NHI Diam 1x6 Inch Neo High Intensity Magnetic Cartridges N/A
C-4006-NHI
Diam 1x6 Inch Neo High Intensity
Magnetic Cartridges
N/A
C-4008-CR Diam 1x8 Inch Ceramic Magnetic Cartridges N/A
C-4008-CR
Diam 1x8 Inch Ceramic
Magnetic Cartridges
N/A
C-4008-NPB Diam 1x8 Inch Neo Power Balance Magnetic Cartridges N/A
C-4008-NPB
Diam 1x8 Inch Neo Power Balance
Magnetic Cartridges
N/A
C-4008-NHI Diam 1x8 Inch Neo Hign Intensity Magnetic Cartridges N/A
C-4008-NHI
Diam 1x8 Inch Neo Hign Intensity
Magnetic Cartridges
N/A
C-4012-CR Diam 1x12 Inch Ceramic Magnetic Cartridges N/A
C-4012-CR
Diam 1x12 Inch Ceramic
Magnetic Cartridges
N/A
C-4012-NPB Diam 1x12 Inch Neo Power Balance Magnetic Cartridges N/A
C-4012-NPB
Diam 1x12 Inch Neo Power Balance
Magnetic Cartridges
N/A
C-4012-NHI Diam 1x12 Inch Neo High Intensity Magnetic Cartridges N/A
C-4012-NHI
Diam 1x12 Inch Neo High Intensity
Magnetic Cartridges
N/A
C-4016-CR Diam 1x16 Inch Ceramic Magnetic Cartridges N/A
C-4016-CR
Diam 1x16 Inch Ceramic
Magnetic Cartridges
N/A
C-4016-NPB Diam 1x16 Inch Neo Power Balance Magnetic Cartridges N/A
C-4016-NPB
Diam 1x16 Inch Neo Power Balance
Magnetic Cartridges
N/A
C-4016-NHI Diam 1x16 Inch Neo High Intensity Magnetic Cartridges N/A
C-4016-NHI
Diam 1x16 Inch Neo High Intensity
Magnetic Cartridges
N/A

If your requirement is for larger volumes we can help!

E-Magnets UK offers a wide range of solutions for handling large volumes of magnets for a number of Global clients. We currently:

  • Manage volumes for certain OEM clients of several million magnets per year
  • Can guarantee stock on rolling monthly call offs
  • Operate JIT systems
  • Offer PPAP etc...

Please feel free to call or email to discuss your requirements with a member of our sales team or use the form below if it makes your life a little easier – One of our sales team will respond to your enquiry asap!

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How to buy Magnetic Cartridges

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