Developed in the 1980's, these cranes were introduced as a more economic and ergonomic alternative to manually operated patented track systems. Traditionally limited to capacities of 2 Ton and under and spans of 30 feet or less These systems are typically manually operated (pushpull) for both bridge and trolley motion. Can be freestanding (floor supported with columns and headers) or ceiling-mounted depending on the application and the overhead support structure available. Are a good fit for customers who prefer manual positioning of light capacity lifted loads.