Maximizing Warehouse Efficiency with Vertical Lift Modules (VLMs)
As supply chains evolve and warehouse space becomes increasingly valuable, making the most of available warehouse space while improving picking performance is essential. One solution that’s gaining traction? Vertical Lift Modules (VLMs) — a smart automation system that optimizes both floor space and productivity.
What Are VLMs — and Why Do They Matter?
A Vertical Lift Module is an automated vertical storage system that stores items in trays and retrieves them via an internal lift. It brings the item directly to the operator, reducing walking time and improving overall picking efficiency.
Key Benefits of VLMs:
- Space Optimization: VLMs use vertical space rather than horizontal shelving, freeing up valuable floor area and enabling higher density storage.
- Enhanced Picking Accuracy: Items can be pinpointed using a combination of visual aids like laser pointers or display screens, guiding the operator to the exact product location.
- Faster Picking Speeds : Operators have considerably reduced walking distances using VLMs compared to traditional aisle picking. By reducing these walking distances, VLMs speed up picking operations. Multiple VLMs per operator can further reduce wait times during peak activity.
- Improved Security & Inventory Control : Access to the VLM can be restricted and tracked — making it a reliable solution for sensitive or high-value inventory.
When Are VLMs A Good Fit?
VLMs are best suited for operations where:
- SKU dimensions are relatively small and uniform
- High picking volumes that justify the automation investment
- Warehouse space is constrained
- Labor availability is limited
A Few Considerations Before You Automate
While VLMs offer numerous advantages, they aren’t a perfect match for every logistics operation and are not a one-size-fits-all solution. Here are a few potential challenges to keep in mind:
- Not ideal for oversized or irregularly shaped items
- Trays are height-sensitive: A single tall item on a tray affects the total storage capacity, so correct SKU placement is key
- Downtime risk: Storing 100% of a product in just one VLM could pose an issue if the system becomes temporarily unavailable
Making the Right Call: Data-Driven Feasibility
VLMs should be seen as part of a broader warehouse automation strategy. At Katoen Natie, we approach each case with a data-driven feasibility study, ensuring our customers get the right mix of technologies and storage solutions for their needs.
Interested in exploring automated storage solutions?
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