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Unitload Automated Storage & Retrieval System (Unitload AS/RS)

High-density pallet storage, high-speed operation, and versatility make Daifuku’s Unitload AS/RS the best-selling automated storage and retrieval system in the world. With its flexible design up to 40 m, the Unitload automated warehouse "Compact System" is customized to fit our customers' specific installation environment and operating conditions. View Unit-load AS/RS configuration in 3D.


1. Fast & dependable

Daifuku offers a variety of stacker cranes for Automated Warehouse to fit your specific load profile and weight, building dimensions, and operating environment. All AS/RS systems feature high-quality drives for fast, smooth, and reliable performance.

2. Advanced control system

Daifuku’s local intelligent network control system offers a comprehensive solution: from front-end controls to full-scale inventory management computer systems. Our software provides full control of stacker cranes and their peripheral load-handling systems. The software monitors the system in real time to assist with trouble and control auxiliary equipment such as quantity indicator displays for order picking.

3. Simple operation & maintenance

End-of-aisle controllers allow operators to easily manage loads without entering AS/RS aisles. The power supply and other major components are readily accessible for quick and easy maintenance.

4. Improved operation efficiency

The high-speed stacker crane automatically stores and retrieves loads quickly and efficiently. Not only does this dramatically reduce cycle time, but it also reduces the number of forklifts and forklift traffic. Daifuku's stacker cranes reduce energy costs by using low electricity and regenerating power.


single deep AS/RS, single deep pallet racking

Single-deep AS/RS

Standard configuration of AS/RS. One stacker crane with access to two rack rows (one on each side).

Double-deep AS/RS

One stacker crane with access to four rack rows (two on each side).
Great for high-density storage of low/med throughput.

aisle change AS/RS system with traverser

Multi aisle change AS/RS

A single stacker crane uses a traverser to change aisles and access multiple rack rows. Additional cranes can be installed later to accommodate throughput growth.

dual crane system

Dual crane AS/RS

Two stacker cranes operate simultaneously in the same aisle to maximize throughput capacity and resiliency.

Dual control technology video
odd-shaped load handling AS/RS

Pallet-less handling AS/RS

Direct handling solutions for rolls and other odd-shaped items offers increased storage density.

Long object handling AS/RS

Long object handling AS/RS

High density storage of long pipes, bars, and plates up to 6.2m long.
> long object AS/RS reference

stacker crane for cold storage

Cold resistant AS/RS

A cold resistant stacker crane is suitable for frozen food handling at -5~-30℃ environment.

heat resistant AS/RS

Heat resistant AS/RS

A heat resistant stacker crane for +40~55℃ environment is suitable for aging and fermentation at food production site.

AS/RS for semi-cleanroom

Semi-cleanroom AS/RS

Semi-clean application is available to meet ISO Class 6~7 requirement by food, pharmaceutical and precision equipment manufacturers.

FMS for Machining Center, Flexible Manufacturing System for Machining Center

Flexible Manufacturing System AS/RS (FMS)

A specially designed high-accurate stacker crane provides 24-hour automatic supply/collection of jigs to/from machining center.


Shuttle Cart

Electrically powered cart transports pallets to the convenient location for loading/unloading.

end-of-aisle conveyor

End-of-aisle conveyors

Conveyors automatically transport pallets to and from load/unload stations. Can also transfer pallets to/from STVs.

rail-guided vehicle, RGV, sorting transfer vehicle

Sorting Transfer Vehicle (STV)

Rail-guided vehicle system STV connects AS/RS aisles to in/out conveyors.

pick-to-light for rack side

Rack-side Pick-to-Light

Pick-to-Light indicators installed on AS/RS rack side allows case picking.

AS/RS with gravity conveyor

Rack-side gravity conveyors

Gravity buffer conveyors installed on AS/RS rack side allow case picking and forklift access.

remote monitoring, remote recovery

Remote monitoring

A camera on stacker crane allows a maintenance worker to check load status in remote, making recovery operations faster and safer.

maintenance cabin

Maintenance cabin

Maintenance cabin on the stacker crane mast is convenient for maintenance and recovery work especially in high-rise warehouse.

seismic tremor control

Earthquake countermeasures

Additional stopper, special racking and other countermeasures can be applied to minimize earthquake damage. (Learn more)

Case Study

ICA Sverige

One of Northern Europe’s largest distribution centers ships 200 thousand cases per day.

Lintec Corporation

AS/RS directly stores roll items at paper and film manufacturing plant.

Contact Daifuku