Pneumatic spindle unit with hemisphere bearing

The utility model provides a pneumatic spindle unit with hemisphere bearing, holding in the palm the axle subassembly and the right side including box, main shaft, a left side and holding in the palm an axle subassembly, a left side is held in the palm the axle subassembly and the right side and is ask an axle subassembly to include all that hemisphere sets off piece, hemisphere air bearing, axle bed, the main shaft wear to establish a left side hold in the palm the axle subassembly and the right side hold in the palm the hemisphere of a subassembly set off piece, hemisphere air bearing, axle bed, the centre bore in. The axle bed has hemisphere cavity and central through hole, it sets off the piece to be equipped with hemisphere in the hemisphere cavity of axle bed, it is provided with hemisphere air bearing and both cooperations to set off at axle bed and hemisphere between the piece, hemisphere air bearing is for lacking the hemispherical of a spherical crown, have the bowl form of the no collet of hemisphe