Guide Dolly
AssemblyRoller carriage running on the derrick guide beam to react drilling torque and guide vertical travel. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Guide Dolly
4 top-level lines as of r50258| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Guide Beam Track | drilling-top-drive-guide-beam | 1× | 1 | · | part |
| 2 | Guide Roller | drilling-top-drive-dolly-roller | 8× | 8 | · | part |
| 3 | Ball Bearing | ball-bearing | 8× | 8 | · | part |
| 4 | Fastener Set | fastener-set | 2× | 2 | · | part |