The purpose of a return kit on a side-roll tarp system is to apply counter-tension as the tarp is rolling, allowing the tarp to wrap tightly and evenly around the tube. The “drive side” of the tarp system is the end of the trailer where rotational force is applied — either by a manual crank (from the rear) or by a motor (typically mounted at the front).
On manually driven side-roll tarp systems, gravity and the operator’s pulling force naturally create tension as the tarp is rolled, helping the tarp wrap snugly around the roll tube. On electric side-roll systems, the motor arm usually incorporates spiral torsion springs at its pivot point so that, as the motor rotates the roll tube toward the “open” position, the spring continuously pushes the motor arm toward the “closed” direction. This opposing force creates consistent wrap tension, allowing the tarp to roll tightly and evenly onto the tube.
Without a return kit, the tarp wraps more loosely on the non-drive side, which can cause the roll to drift out of alignment. Slack on the non-drive side can allow the tarp edge to fall into the container, which can lead to abrasion against the trailer or end cap, resulting in premature wear, fraying, or tearing.
There are a variety of trailer configurations, applications, and budgets, so there are multiple return-kit options available. If you have questions about which side-roll tarp return kit is best for your setup, give us a call and we’ll help you select the right solution.
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