Slotting

Slotting is a term used across several disciplines to describe processes that arrange storage locations, schedule tasks, or, in manufacturing, to describe a machining operation that creates a slot.

In warehousing and logistics, slotting refers to the systematic assignment of storage locations for items to minimize travel distance and improve picking efficiency. The process uses item attributes such as turnover rate, size, weight, and handling requirements, along with warehouse layout data, to determine where each product should be stored. Typical steps include item profiling, choosing slotting strategies (for example, placing high-velocity items in easily accessible zones), and periodic reviews to adjust locations as demand changes. Benefits can include shorter pick paths, better space utilization, and improved order accuracy.

In retail and consumer goods, slotting often describes slotting fees or allowances paid by manufacturers to retailers to obtain shelf space or promotional support. These payments influence shelf allocation, product launch timing, and the prominence of a product on store shelves. Slotting arrangements vary by retailer and market and have been the subject of industry discussion and regulatory scrutiny due to concerns about competition and access for smaller brands.

In manufacturing and tooling, slotting is a machining operation that creates a slot or channel in a workpiece. It is typically performed with a vertical milling machine or dedicated slotting equipment, using end mills or slot drills. The produced slots can be straight or shaped and may serve as guides, housings, or mounting channels for assemblies and fittings.