A self-contained lifting device employing compressed air to power a hydraulic system for raising heavy loads, typically rated for a maximum weight of 20 tons (40,000 pounds). It combines the mechanical advantage of hydraulics with the convenience of pneumatic operation, often featuring a compact, bottle-shaped design.
These devices are favored in automotive repair, heavy equipment maintenance, and industrial settings due to their substantial lifting capacity, relative portability, and ease of use. The integration of air power reduces manual effort, expediting lifting operations and minimizing operator fatigue, while its historical roots lie in the broader development of hydraulic and pneumatic technologies for force multiplication.
