spider

[img_assist|nid=12011|title=|desc=|link=none|align=right|width=128|height=164]The bridge across the top of a gyratory crusher in the central boss of which is housed the bearing carrying the upper end of the shaft on which the head is mounted.

[img_assist|nid=15085|title=spider|desc=|link=none|align=left|width=266|height=200]