Pneumatic angle adjustment for magic angle spinning spherical rotors

•A new stator for spinning spherical MAS rotors is designed and 3D-printed for use in an NMR probe.•The new stator enables fine and stable control of the spinning angle of a sphere rotor with no mechanical adjustment required.•The angle adjustment sensitivity is measured by observing the off-magic angle lineshape of a deuterated solid and comparing to simulated spectra.