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Piercing Roll Set

Assembly

The two driven barrel rolls, their chocks and bearings, and the tilt and skew adjustment that set the cross-roll geometry.

Direct parts	5
Class	Assembly

The two driven barrel rolls, their chocks and bearings, and the tilt and skew adjustment that set the cross-roll geometry. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Bill of materials for Piercing Roll Set

5 top-level lines as of r150957

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Barrel Work Roll	seamless-pipe-piercing-mill-work-roll	2×	2	·	part
2	Roll Chock 3 parts	seamless-pipe-piercing-mill-roll-chock	4×	4	0	assembly
3	Roll Tilt Drive 3 parts	seamless-pipe-piercing-mill-roll-tilt	2×	2	0	assembly
4	Roll Skew Drive 3 parts	seamless-pipe-piercing-mill-roll-skew	2×	2	0	assembly
5	Roll-Neck Bearing	seamless-pipe-piercing-mill-roll-bearing	4×	4	·	part