Overhanging Loads: solutions for cantilever applications

The improper handling of overhanging loads in industrial applications can result in reduced system performance, excessive wear on components, and even failure.

That is why in this article we will discuss the key challenges associated with cantilever loads, the best practices to manage them, and the role of telescopic guides in addressing these challenges.

Definition of overhanging and cantilever loads

In mechanical systems, an overhanging load refers to any load that extends beyond the support structure, creating a bending moment. A cantilever load is a specific type of where one end is fixed, and the other end extends freely.

The farther the load extends beyond its support point, the greater the bending forces applied to the supporting structure. These forces, if unmanaged, can cause deflection, instability, and wear on components.

Managing overhanging loads

The main challenge with overhanging loads is managing the resulting bending moments. If not properly addressed, these forces can cause deformation, reduce precision, and increase wear on bearings and guide rails.  To make sure that the loads are managed safely there are some general overhanging load rules to keep in mind:

• Distribute the Load Evenly: It is important to avoid concentrated loads on the overhanging section.
• Limit the Length of the Overhang: The cantilever length when reduced lowers the bending moment.
• Use Reinforcements: braces or additional supports should be incorporated where possible.

 Choose the right telescopic rails: It is important to choose the correct linear bearing for your overhanging load. The linear systems selected must be capable of handling both the vertical load and the resulting moments from the overhang. For engineers, understanding the overhanging load rules ensures that system components operate within their limits, enhancing system longevity and reducing maintenance costs.

Managing overhanging loads with telescopic guides

Telescopic guides allow for linear motion in systems with overhangs, providing the necessary support and stability. Rollon’s telescopic rails, for instance, are built to handle both dynamic and static loads while minimizing deflection. Their high load capacity prevents deformation and reduces wear, ensuring durability in systems with frequent cantilever forces.

Additionally, telescopic rails are offered in different materials such as aluminium, steel and stainless steel AISI 316L with hardened raceways, and different accessories in order to satisfy the most of the application requirements.

Telescopic rails are used, for example, to manage overhanging loads in automated storage systems used in warehouses. In warehouse automated storage systems, trays or drawers extend from racking units, creating cantilever loads that can cause sagging or misalignment if unsupported. This instability risks damaging the system and reducing operational efficiency.

By using telescopic slides, however, these systems manage overhanging loads more effectively. The guides provide smooth, controlled movement even when the stroke overcome the lenght of the rail, preventing deflection and maintaining alignment. This improves both safety and efficiency, ensuring reliable access to stored items without risk of jamming or failure.

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