| 摘要 |
Rollers are provided for roller conveyors. The roller comprises a sleeve body receiving roller bearings in the ends thereof, the bearings receiving a spindle. One race of each bearing supports the sleeve body, whilst the other has a bore engaged by the spindle. The engagement between the said bore and spindle is by means of a flexible seal so that the bearing can slide relative to the spindle in an axial direction, but the seal prevents flow of water along the spindle. There may be a single spindle extending through both bearings of each roller, or there may be two stub axles, one for each bearing. The races of the bearings are preferably of plastics material.
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