Cutterhead Support and Main Drive
AssemblyEverything that holds and turns the cutterhead. The cutterhead support carries the main bearing and its seals, drive units around it turn the cutterhead through the bull gear, and the roof shield, side supports and vertical support hold the front of the machine steady in the bore. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Cutterhead Support and Main Drive
6 top-level lines as of r193957| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Cutterhead Support | main-beam-tbm-cutterhead-support | 1× | 1 | · | part |
| 2 | Main Bearing 4 parts | main-beam-tbm-main-bearing | 1× | 1 | 0 | assembly |
| 3 | Bull Gear | main-beam-tbm-bull-gear | 1× | 1 | · | part |
| 4 | Main Drive Unit 4 parts | main-beam-tbm-drive-unit | 10× | 10 | 0 | assembly |
| 5 | Main Bearing Seal System 3 parts | main-beam-tbm-main-seal | 1× | 1 | 0 | assembly |
| 6 | Roof Shield and Side Supports 6 parts | main-beam-tbm-head-shield | 1× | 1 | 0 | assembly |