Unit Load AS/RS


Used to store/retrieve loads that are palletized or unitized and weigh over 500 lbs.


Stacking heights up to 130 ft. high, with most ranging from 60 to 85 ft. high; 5 to 6 ft. wide aisles; single- or double-deep storage racks.



Miniload AS/RS

Used to store/retrieve small parts and tools that can be stored in a storage bin or drawer

End-of-aisle order picking and replenishment

Stacking heights range from 12 to 20 ft.; bin capacities range from 200 to 750 lbs.


Termed a "microload AS/RS" when used in assembly, kitting, and testing operations to deliver small containers of parts to individual workstations, where workstations are typically located on the sides of a pair of racks.


Man-On-Board AS/RS


Used for in-aisle picking; operator picks from shelves, bins, or drawers within the storage structure


Manual or automatic control


S/R machine is similar to an order picker or turret truck and can sometimes operate as an industrial truck when outside an aisle, except the S/R is guided along a rail when operating in an aisle






Deep-Lane AS/RS

Similar to unit load AS/RS, except loads can be stored to greater depths in the storage rack

A rack-entry vehicle is used to carry loads into the racks from the S/R machine, and is controlled by the S/R machine

Termed as an "automated item retrieval system" used to automatically retrieve individual items/cases, with replenishment taking place manually.