A static characteristic test device for radial magnetic bearings mainly comprises a loading and measuring mechanism, a tested radial
magnetic bearing, rotor limiting and measuring mechanisms and a
stator fixing mechanism. The static characteristic test device is characterized in that the loading and measuring mechanism comprises a locking nut, a loading
screw cap, a loading screw rod, a sleeve end cap, a deep grove
ball bearing, a sleeve, a small nut, a shifting rod, a thrust plate, an ergometer, a U-shaped rotor pushing rod, a loading clamp and a loading base; the tested radial
magnetic bearing comprises a rotor and a
stator; each rotor limiting and measuring mechanism comprises displacement sensor probes, a rotor radial shifting rod,
acetal resin sheets, an upper pressure block, a U-shaped base and a U-shaped base supporting seat; the
stator fixing mechanism comprises an upper V-shaped block, a pressure rod, an adjusting nut,
lower half V-shaped blocks, a guide rail seat, locking nuts, pressure strips, nuts, screw rods and a base. The static characteristic test device for the radial magnetic bearings has the advantages of wide measurement range, convenience in adjustment, simplicity in operation, precision of measurement results and the like.