| 摘要 |
A pulley body (11) is mounted for rotation on a support body (10) by a rolling bearing (12). The support body (10) comprises two sleeves (16, 17) each having an open end and means (20, 24) defining an aperture (21, 25). The two apertures (21, 25) are arranged on an axis eccentric to the sleeves (16, 17) and are adapted to receive a bolt (26) for securing the support body (10) to a structure (27). One aperture (21) is positioned at one end of the support body (10) where the head of the bolt (26) will be. To stiffen the sleeve (17) providing the aperture (21) so that thinner walled and thus lighter sleeves can be used, the sleeve at that end having the aperture (21) has a radially outwardly extending annular flange (19) in the form of an annular head. The flange (29) also provides a larger contact area for the head of the bolt thus reducing the pressure on that end of the sleeve when the bolt is tightened. <IMAGE> |
