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Description
The general arrangement is shown in Fig. For fixed radius cranes must be adjustable, floating cranes are also carried out with steady throat. The adjustment of the projection is almost exclusively a spindle. Depending on the mounting of the spindle nut are three versions distinguished: sitting Using guided by a curved piece nut (see figure) the same set in the lower part of the boom tree, the axis of the spindle collapses in every position with the axis of the boom harness, lateral forces, which effect resulting from the weight are taken up by the slideway.
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