| 摘要 |
<p>A carriage body (10) and a bearing sub assembly for use in a roller wheel assembly, the bearing having a central opening (20) defining a rotation axis of a roller wheel (33) supporting shaft (27), the bearing having an outer peripheral mounting surface (50), the carriage body being in one piece and being characterized by a bearing support cavity having an access region (28) opening in a first face of the carriage body. The bearing support cavity defines a support surface means, in use, engaging with a portion of the outer peripheral mounting surface of the bearing. The bearing is positioned in the bearing support cavity by movement through the access region in a direction (52) transverse to the rotation axis.</p> |
