| 摘要 |
In a roller pair for a roller testing stand with two, commonly driven, rollers the distance of one of them which with respect to the other being adjustable, such as known in itself in a so-callead "universal roller testing stand", the invention proposes, to simplify the driving structure, that of this adjustable roller the axis can be displaced along a circular arc, of which the center essentially coincides with the axis of a driving gear or -wheel, in such a way that during the adjustment the distance to this axis remains constant.
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