NMR Magnets


Magnet Choice for Every Application


JEOL offers a complete family of superconducting magnets including actively shielded magnets from 400-800 MHz, and ultra high-field magnets from 900-930 MHz. Manufactured to our specifications by Jastec, our magnets feature low cryogen consumption cryostats, extremely small B0 drift characteristics and excellent homogeneity. Both narrow and wide bore systems are available.


Space-saving design with a compact superconducting magnet


Greater flexibility of installation layout of the instrument is possible with the new compact magnets that have a smaller stray magnetic field.

Instrument Stray Magnetic Field (0.5mT line) Ceiling Height* (m) Liquid Helium**
Refill Period (days)
Direction (m)
Direction (m)
400 MHz YH 0.5 1.0 2.84 ≥365
500 MHz 0.6 1.15 2.87 ≥150
600 MHz 0.7 1.4 3.12 ≥200
700 MHz 0.8 1.6 3.12 ≥150
800 MHz 1.5 2.5 3.52 ≥150

* The required ceiling height = Total height + Current lead length or Transfer tube length

** These values are calculated from the filled capacity and the estimated evaporation rate, the actual number of days may vary depending on the actual use environment.

* These values are when the option is used.

The external appearance and specifications are subject to change without prior notice.

Image of 1020 MHz magnet courtesy of: National Institute for Materials Science (NIMS)


Since 1956, JASTEC has been manufacturing magnets for JEOL. Here below are some pictures of the site in Kobe, Japan.

JASTEC Factory FloorJASTEC Factory Floor

JASTEC Factory Floor CloseupJASTEC Factory Floor Closeup

Winding the magnetic coilWinding the magnetic coil

Winding the magnetic coil - delicate workWinding the magnetic coil - delicate work

Welding on the nitrogen fill columnWelding on the nitrogen fill column