What is the difference between unit load and mini load?

The terms "unit load" and "mini load" are often used in the context of automated storage and retrieval systems (ASRS) to describe different types of storage and handling systems. Here's an explanation of the difference between unit load and mini load:

Unit Load:
Unit load refers to a system that handles and stores larger, bulkier loads or items. It typically involves storing items on pallets, containers, or other larger transport units. Unit load systems are designed to handle and transport these larger loads efficiently. They often utilize equipment such as forklifts, pallet jacks, or automated guided vehicles (AGVs) to handle and move the unit loads within a facility. Unit load systems are commonly found in warehouses, distribution centers, and manufacturing facilities where there is a need to store and transport larger quantities of goods or materials.

Mini Load:
Mini load, on the other hand, refers to a system that deals with smaller and more individualized items or loads. It is designed for storing and handling smaller units like totes, bins, cartons, or cases. Mini load systems often employ automated storage and retrieval machines (AS/RS) to handle the storage and retrieval of these smaller loads. These machines, sometimes known as mini-load cranes or stacker cranes, are capable of navigating narrow aisles and picking individual units from their designated storage locations. Mini load systems are commonly used in operations where there is a need for high-density storage and efficient order picking of smaller items, such as e-commerce fulfillment centers or parts storage facilities.

In summary, unit load systems handle larger, bulkier loads stored on pallets or containers, while mini load systems are designed to handle smaller items stored in totes, bins, or cartons using automated storage and retrieval machines. The choice between unit load and mini load systems depends on the specific requirements and characteristics of the materials being stored and handled in a given facility.