Worm Gearbox
AssemblyHigh-ratio worm reduction that is inherently self-locking: the load cannot back-drive the motor, so the chair holds on the stairs even unpowered. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Worm Gearbox
5 top-level lines as of r163524| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Worm Shaft | stair-lift-worm-shaft | 1× | 1 | · | part |
| 2 | Worm Wheel | stair-lift-worm-wheel | 1× | 1 | · | part |
| 3 | Gearbox Housing | gearbox-housing | 1× | 1 | · | part |
| 4 | Ball Bearing | ball-bearing | 2× | 2 | · | part |
| 5 | Oil Seal | oil-seal | 2× | 2 | · | part |