Mas-nmr rotor system with improved space utilization

A magic angle spinning (MAS) nuclear magnetic resonance (NMR) rotor system, comprising:

• a rotor configured to accommodate a measurement substance,
• a stator configured to mount the rotor rotatably about a rotation axis,
• a first pneumatic radial bearing, comprising first nozzle outlet openings in the stator at a radius r1 and a first bearing surface on a circular cylindrically-shaped section of the rotor at a radius R1, a second pneumatic radial bearing, comprising second nozzle outlet openings in the stator at a radius r2 and a second bearing surface on the rotor at a radius R2, and
• a pneumatic axial bearing, comprising at least one nozzle outlet opening in the stator and a third bearing surface on an axial end of the rotor,
• wherein the third bearing surface runs orthogonally to the rotation axis and has an outer radius R3,
• wherein the second radial bearing is formed on an end section of the rotor which, as compared to the circular cylindrically-shaped section, has a smaller radius or a radius that decreases away from the circular cylindrically-shaped section, such that:
• R2<R1 and r2<r1, and
• wherein the third bearing surface is formed on an end of the end section that faces away from the circular cylindrically-shaped section, such that:
• R3≤R2.