Daifuku Unit Load AS/RS | Automated Storage & Retrieval System

Optimize vertical storage potential with unit load crane technology

Daifuku's Unit Load Automated Storage and Retrieval System (AS/RS) maximizes the storage of pallets and other large loads by optimizing vertical storage in a small footprint. Reaching heights up to 131 feet (40 meters), this crane-based system is capable of handling a variety of large items, including pallets, box pallets, rolls, barrels, long objects like pipes, bars, beams, and large, irregularly shaped items like automotive chassis frames.

This flexible unit load AS/RS can store hazardous material and also operate in various hazardous or challenging environments including freezers (down to -22°F or -30°C), cleanrooms, high-temperatures, oily or dusty operations, as well as low-noise applications. Choosing the right AS/RS to fit your product and operating conditions can be difficult. Our engineers have the expertise and experience to find the best technology to fit your specific requirements. Contact us today to start discussing your goals.


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How It Works

Daifuku’s Unit Load AS/RS is operated by a crane mast that travels up and down the aisle while a pallet handling device travels vertically on the mast to reach into the rack to deposit or pick up a pallet. Pallets are generally brought into the AS/RS via conveyors. The load handling device grabs the pallet from the pickup station, where the conveyor deposited the pallet.

Once the pallet is secured, the AS/RS crane travels to the correct lane location while the mast raises or lowers to the proper row height. Once at the proper lane location and row height the load handling device extends and drops the pallet off in the rack for storage.

The pallet is stored in the AS/RS until it is ready to be retrieved. Once the retrieve command is sent to the AS/RS, the process is reversed. The AS/RS goes to the proper lane and row location to retrieve the product and then take it to a drop off location. After the pallet is dropped off either conveyors or forklift operators transport them to the next process.

In addition to a standard single deep unit load, double deep rack and dual cranes configurations are also offered.


Features & Benefits

  • Quiet operation
  • Variable speed control
  • Modular design for easy installation and expansion
  • Small footprint frees up floor space
  • Increase inventory accuracy and control
  • High throughputs increase your productivity
  • Reduce out of date and damaged pallets
  • Easy operation and maintenance
  • Minimize employee safety risks involved with forklift operations


  • Store large quantities of raw material and/or finished goods
  • Temporary storage of large WIP (work in progress) items
  • Embedded point-of use for assembly or kitting operations
  • Replace static rack or narrow aisle rack loaded by forklifts
  • Eliminate the workforce labor availability element of storing and retrieving product


  • Load weight capacity: 1,100-6,600 lbs. (500-3,000 kg)
  • S/R machine (crane) height: 10-131 feet (3-40 meters)

The above specs may vary depending upon individual system configurations and custom modifications may be available to better meet your exact application. The availability of overhead space in your specific facility will determine the height of the racking which may be used. Aisle length and the number of aisles available for use in your facility are based on your available floor space and building layout. Load size and throughput requirements do affect the speed of the ASRS system and are also considered when determining ASRS configuration.

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