Automation for Split-Case and Broken-Case Picking

Split-case picking — pulling individual units or partial quantities from a case rather than a full case at a time — is one of the hardest problems in warehouse automation because it multiplies SKU-handling complexity by orders of magnitude compared to full-case or pallet flows. It is also unavoidable for most e-commerce and pharmacy operations.

Full-case automation deals with a bounded set of case dimensions and weights per SKU. Split-case picking deals with the individual unit inside, which may be irregularly shaped, fragile, loose, or packaged in ways that were never designed for automated handling. The same automation system may need to pick a bottle, a blister pack, and a soft pouch from adjacent locations within seconds of each other.

• A-frame and pocket dispensers — mechanical dispensing channels well suited to high-velocity, uniformly shaped SKUs such as small pharmacy items or accessories, ejecting units directly onto an order-specific conveyor lane.
• Put walls with pick-to-light — semi-automated, human-in-the-loop consolidation for medium-velocity SKUs where full mechanization isn't cost-justified.
• Robotic each-picking with vision and adaptive grippers — used for slower-moving or highly variable SKUs where flexibility matters more than raw speed.
• Goods-to-person shuttle systems feeding a manual split station — the shuttle handles case-level retrieval while a human or cobot performs the actual unit-level break.

Split-case flows change how slotting decisions should be made. A SKU that is both high-velocity and physically well-suited to a dispensing channel justifies dedicated automated slotting, while a low-velocity SKU with irregular packaging is often cheaper to pick manually even at a modest volume, since the engineering cost of automating an edge-case SKU rarely pays back. Facilities benefit from segmenting their catalog explicitly into "automatable" and "manual by design" tiers rather than assuming a single automation approach fits the whole assortment.

Split-case operations carry higher per-unit error risk than case-level picking, since a single mis-pick affects a smaller, more error-prone quantity that is harder to catch downstream. Weight-check verification at the pack station and barcode scan confirmation at each split point are standard mitigations, and both should be treated as mandatory rather than optional in split-case-heavy operations such as pharmacy or specialty retail fulfillment.

Very few operations achieve full automation of split-case picking end to end; most run a hybrid model where mechanized dispensing handles the top of the velocity curve and manual or semi-automated picking handles the long tail. Evaluating ROI on the top-velocity slice alone, rather than demanding full-catalog automation, produces a far more realistic and achievable business case.