mæɡnˈɛɾɪk kˈʌplɪŋz ɑːɹ ˈɔfən sˈɪŋkɹənəs, mˈiːnɪŋ ðɪ ˈaʊtpʊt ʃˈæft spˈiːd ˈiːkwəlz ˈɪnpʊt ʃˈæft spˈiːd ɐ wˈʌn:wˈʌn ɹˈeɪʃɪˌoʊ.
Magnetic couplings are often synchronous, meaning the output shaft speed equals input shaft speed (a 1:1 ratio).