| 摘要 |
Conveyor fitted with rollers or wheels made of plastic material provided with ball bearings used in line or in large area surfaces. Each roller constituting it is produced by means of a cylindrical tube 1 comprising at each end a ferrule 2 serving as an outer ring of the bearing, the inner ring being either a bored cylindrical bush 3, or an axial pivot 5, whose diameter corresponds to that of the bore of the bush 3, the latter comprising by way of fixing elements two flanges 3c and 3c spaced by a few millimetres from each other in order to generate a circular groove 3e in the width of which is clamped the thickness of the longitudinal member 4 of the support frame by force fitting in an emerging notch 10 produced in the latter; the assembly in line of rollers allows sideways variations in the separation of the longitudinal members to be absorbed. <IMAGE>
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