Centrifugal abrasive grain projecting device

Abstract

A centrifugal abrasive grain projecting device is disclosed. The device includes a cover main body (2) covering an impeller (1), a hollow cylindrical body (6) rotatably mounted on the external surface of a side wall of the cover main body, a control cage (7) passing through the cylindrical body so as to be inserted into the impeller and at one end detachably affixed to the hollow cylindrical body, an introducing tube (9) that is adapted to abut, at a distal end, one end of the control cage via an elastic member (8) and that is detachably held between the control cage and a holding mechanism (10), and a rotational drive mechanism (17) for reversibly rotating the hollow cylindrical body, wherein the device prevents abrasive grains from entering a portion where the hollow cylindrical body fits in the cover main body and from stopping the rotation of the hollow cylindrical body. In the device the control cage is rotatably mounted on the hollow cylindrical body via a rolling bearing (5), and a rolling body (5a) of the rolling bearing is closed on the impeller side by a liner (15) via a filler member (14) and closed on the introducing tube side by a bearing cover (23) via a filler member (22).

Dependencies are inferred from the claim text.