A four-way shuttle system stores pallets in deep, dense lanes while omnidirectional shuttle cars travel both along and across the aisles, transferring between levels via vertical lifts. The result is AS/RS-level automation with far greater layout flexibility than crane-based systems — and storage density that conventional forklift racking cannot reach.

The rack structure is the foundation of the whole system. Rail straightness, lane tolerances and beam deflection directly determine whether shuttles run smoothly at full speed or fault out every shift. JISE engineers the racking to FEM 10.2.19 (the shuttle-racking design code) together with the shuttle supplier's interface data, so the steel and the robots are designed as one system — not patched together on site.

JISE four-way shuttle projects include a 32 m high-bay installation in Thailand (24,000+ pallet positions), a 25 m system in Mexico, and multi-thousand-position systems for e-commerce and manufacturing clients. Systems are engineered for ambient, chilled and deep-freeze environments.

Typical applications