MEPS – Air gap density Hci

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Technical description


Here you can compute the working point of a magnet for a given temperature taking into account the following parameters:

  • Magnet material properties (remanent flux density Br and coercive force Hc) at a given temperature,
  • Geometric dimensions of the machine (radial thickness of magnet and air gap).

The working point of a magnet is characterized by its magnetic field Hg and a corresponding flux density Bg.
This working point is determined as the intersection of the load line of the machine and the demagnetization curve of the magnet at a given temperature.

Specific conditions of use

This tool should be used for Ferrite for Rare Earth magnets (NdFeB and SmCo). AlNiCo is not considered.

Note: The rated temperature is not an input data. The rated temperature is the temperature for which Br and Hc are given. Please use data from the magnet suppliers. The rated temperature is often 23°C.

MEPS page access

MEPS page access is protected. The protection is handled automatically through self-expiring links for uninterrupted use in a given period. You will receive your personal access by email after you return from a successful purchase at PayPal. So, please follow the steps below:

  • choose the period you would like to use the MEPS,
  • click on the respective PayPal button in order to purchase the time-limited access,
  • purchase by PayPal account or by credit card on the PayPal platform,
  • follow then the instructions sent by email.
Price (incl. VAT) for a period Payment button
0.5 € for 7 days

1.5 € for 1 month

3 € for 3 months

10 € for 1 year

General conditions of use

  • It is assumed that you are an expert user.
  • Usage is at your own risk. Even though our experts work daily with these mini-tools, we decline any responsibility on the results accuracy or applicability.
  • No support or refund is included in the usage fee. You use the MEPS “online” in an “as is” condition.
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