Bridle Block
AssemblyMulti-sheave block at the mast top that multiplies topping-rope pull. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Bridle Block
4 top-level lines as of r45021| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Bridle Sheave | derrick-crane-bridle-sheave | 3× | 3 | · | part |
| 2 | Sheave Axle Pin | derrick-crane-sheave-pin | 1× | 1 | · | part |
| 3 | Ball Bearing | ball-bearing | 6× | 6 | · | part |
| 4 | Block Shell | derrick-crane-block-shell | 1× | 1 | · | part |