Ranging Arm
AssemblyPivoting gearcase that carries the cutting drum, transmits 400–1,000 kW to it through a gear train, and ranges it vertically to follow the seam. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Ranging Arm
7 top-level lines as of r100566| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Cutter Motor | longwall-shearer-cutter-motor | 1× | 1 | · | part |
| 2 | Arm Gearcase | longwall-shearer-arm-gearcase | 1× | 1 | · | part |
| 3 | Ranging Cylinder | longwall-shearer-ranging-cylinder | 1× | 1 | · | part |
| 4 | Drum Output Shaft | longwall-shearer-drum-shaft | 1× | 1 | · | part |
| 5 | Helical Gear Pair | gear-pair | 4× | 4 | · | part |
| 6 | Ball Bearing | ball-bearing | 6× | 6 | · | part |
| 7 | Oil Seal | oil-seal | 4× | 4 | · | part |