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A compressed-air vane motor comprises a rotor which is mounted on anti-friction bearings and has, distributed over the periphery, location slots in which vanes are guided in a radially displaceable manner and whose outer sealing edges bear by centrifugal force against the inner surface of the cylind

A compressed-air vane motor comprises a rotor which is mounted on anti-friction bearings and has, distributed over the periphery, location slots in which vanes are guided in a radially displaceable manner and whose outer sealing edges bear by centrifugal force against the inner surface of the cylindrical outer shell. To reduce wear and friction, and to achieve a long service life when operating with oil-free compressed air, the outer shell, which is displaced eccentrically relative to the rotor, is rotatably guided in a housing and is driven along by the friction between the vanes and the outer shell, and the cylindrical outer shell is rotatably mounted in the housing by at least one air bearing and to this end is accommodated with little radial clearance in an approximately circular-cylindrical guide bore of the housing. In order to further reduce wear, at least one air pocket is provided and is open toward the outer shell in the housing. The axial length of this air pocket corresponds to the axial length of the encircling outer shell.

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A compressed-air vane motor comprising: (a) a housing having a generally cylindrical guide bore located therein; (b) a rotor rotatably mounted on anti-friction bearings within said housing and having radially extending location slots distributed over the periphery thereof; (c) a cylindrical outer sh

A compressed-air vane motor comprising: (a) a housing having a generally cylindrical guide bore located therein; (b) a rotor rotatably mounted on anti-friction bearings within said housing and having radially extending location slots distributed over the periphery thereof; (c) a cylindrical outer shell eccentrically encircling said rotor and rotatably mounted within said guide bore via an air bearing comprising a slight radial clearance between an outer surface of said outer shell and said guide bore, wherein said guide bore is widened on only one side to form an air pocket between the housing and said outer surface of said cylindrical outer shell, and wherein the axial length of said air pocket corresponds to the axial length of said outer shell; and (d) vanes displaceably mounted in said location slots, wherein said vanes have outer sealing edges which are adapted to bear by centrifugal force against an inner surface of said outer shell and to rotate said outer shell within said guide bore due to frictional forces produced therebetween.