Counterbalance Assembly
AssemblyThe torsion counterbalance: a wound spring on a shaft carried by bearing plates, with winding cones, cable drums, and lift cables that offset the door weight. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Counterbalance Assembly
8 top-level lines as of r151295| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Coil Spring | coil-spring | 2× | 2 | · | part |
| 2 | Torsion Tube | sectional-garage-door-torsion-tube | 1× | 1 | · | part |
| 3 | Winding Cone | sectional-garage-door-winding-cone | 2× | 2 | · | part |
| 4 | Bearing Plate | sectional-garage-door-bearing-plate | 3× | 3 | · | part |
| 5 | Ball Bearing | ball-bearing | 3× | 3 | · | part |
| 6 | Cable Drum | sectional-garage-door-cable-drum | 2× | 2 | · | part |
| 7 | Lift Cable | sectional-garage-door-lift-cable | 2× | 2 | · | part |
| 8 | Fastener Set | fastener-set | 1× | 1 | · | part |