| 摘要 |
A bearing unit 50 comprises a bearing housing 58 which has bearing 64 which is radially movable in one direction. Movement of the bearing 64 in said radial direction disengages the bearing 64 from behind an axially acting locking rib 68 for quick and easy replacement of the bearing 64. The bearing can be radially biased towards the operative position behind the locking rib 68 by prestressing of loop belts 22, 24 of a continuous conveyor, a steel or rubber-elastic spring cushion (84 fig 8), a leaf spring (86 fig 9), locking screws/rods (88/90 fig 10) or a wire bow spring (figs 11, 12). The radial extension of the locking rib 68 is smaller than the radial clearance between the bearing 64 and the fitting aperture 70 of the housing 58. There may be two such bearings 64 applied to the housing, each being biased in opposite radial directions with locking ribs 68 facing opposite directions. The bearings 64 may be ball, roller or sliding bearings. |
