Dense pallet automation · FEM 10.2.19 engineered

Four-Way Shuttle Racking System

Fully automated high-density pallet storage where the racking and the robots are engineered as one system. Delivered up to 32 m high-bay, from pilot blocks of 2,000 positions to mega-sites of 50,000+.

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How a four-way shuttle system works

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

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.

Delivered track record. 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.

One system, five engineered layers.

JISE manufactures the structural heart of the system and integrates with your chosen shuttle and software suppliers — or supplies complete.

Layer	What it does	JISE scope
Rack structure	Frames, lane rails, guides — the precision structure shuttles run inside	Design + manufacture to FEM 10.2.19
Four-way shuttles	Omnidirectional cars moving pallets along and across aisles	Integrated from qualified suppliers, or interface-engineered to your brand
Vertical lifts	Transfer shuttles and pallets between levels	Integrated; shaft structure by JISE
Conveyors & I/O	Inbound/outbound stations, pallet handling at the rack face	Integrated per layout
WMS / WCS	Inventory logic, task scheduling, fleet coordination	Interface support; supplied by integrator partner

Engineering note. Load capacities, span–load curves and seismic parameters for JISE racking are calculated project-by-project by our structural engineers and issued with stamped documentation. FEA (finite element analysis) reports can be provided in the official language of your project location. Contact us with your pallet spec and bay configuration for project-specific data.

Why the rack decides whether the robots work.

A four-way shuttle is a machine that lives inside the rack. Three structural disciplines decide if it runs at rated speed — or faults every shift.

Lane-rail alignment

Rail straightness and continuity directly limit shuttle speed and wheel life. FEM 10.2.19 sets deformation limits under moving loads; we manufacture and verify to them.

Fatigue, not just strength

Thousands of loaded passes per day make lane rails a fatigue component. Design is verified against the project's specified load cycles — a step static racking never needs.

The rack–robot interface

Rail profiles, clearances and tolerances are exchanged with the shuttle supplier's engineering team as documented data — not discovered on site during commissioning.