As we discussed recently*, Horizontal Carousel storage systems are one of the best ways to improve the efficiency of your warehouse operation. What we have yet to discuss are the two main alternatives, which are Vertical Carousel and Vertical Lift Modules (VLM). Although there are some similarities, it is important you are aware of the differences between the three, so you can identify which one suits your requirements more closely.

It has to be said, that choosing one particular system does not restrict you from working with a combination within your warehouse. Each one has their particular pros and cons that work with well with specific types of product. That also applies to manual systems, so once you begin work with an automated system, it does not have to mean you have to transition completely. Read through our overview of Vertical Carousels and VLM’s below to see which one feels like the most natural fit for your business.

Vertical Lift Module

What is clearly noticeable about the system is how it allows for greater storage within the same footprint, which is an advantage for any storage unit. A VLM also offers great adaptability, which is particularly useful for companies that work with a wide range of products across the course of the year. Depending on the model you choose, shelf heights can extend up to 28 inches, and if placed onto the shelf through electronic eyes, the VLM will automatically adjust to the appropriate height of the item. The shelves can, of course, be adjusted manually but the automatic alteration will help to save the worker valuable time.

The flexibility of the system also allows the height of the module to be adjusted to suit the dimensions of the warehouse. Price wise they can be slightly more expensive than a Vertical Carousel, so this is a worthwhile consideration to weigh up alongside the others.

Vertical Carousel

The most obvious thing about this system compared to the Horizontal version is of course the directional movement of the trays. The main benefit of this carousel is that it maximises unused vertical floor space, which is ideal for compact warehouses. A Vertical Carousel also allows you to bring together more than one unit at a time, which helps to increase throughput and picking speed. Although there is less storage compared to a Horizontal unit, the smaller footprint means you can introduce more the machines into the workspace. An added bonus is that the temperature and humidity within the unit can also be controlled quite easily.

A Vertical carousel is slower than a horizontal unit and the construction of the unit does also mean items have to be distributed evenly to prevent loads becoming unbalanced. Due to the limited bin space, this system may not be ideal if the product in question has a high turnover rate and needs regular replenishment.

It must be remembered that while this systems can produce some amazing results and a true uplift in operational performance, like any other machinery, they will rely on your input and maintenance to ensure they continue to run smoothly. Both the VLM and Vertical Carousel’s need to be serviced periodically to ensure they meet the certification levels required by legislation, as they come under the same category as forklifts and cranes.

If you are looking at these options for the first time, it’s not always easy to decide on the module that fits in with your requirements. Hopefully our information will help eliminate any initial confusion and provide you with some direction. We have vast experience of designing and installing carousels, VLM’s and many other storage systems, helping companies to expand and grow their business.


* Horizontal Carousel article