Flexible screw conveyors are popular for their simplicity, versatility, and cost-effectiveness — but not all systems perform the same. When a conveyor isn’t engineered for your specific material or process, inefficiencies, excessive wear, or even equipment failure can occur. At first glance, an off-the-shelf conveyor might seem like the easy choice, but true performance depends on a design that aligns with your application. The right system minimizes power consumption, prevents material degradation, and ensures long-term reliability — turning a basic piece of equipment into a precision-engineered solution.
Common Flexible Screw Conveyor Mistakes
1. Mismatch Between Material and Design
Flexible screw conveyors can move many different types of materials. But if those materials affect conveying equipment in a way that wasn’t accounted for when the equipment was being built, there can be problems down the road.
For example, some bulk materials create friction, which can have a negative effect on the material itself and also cause the conveyor’s motor to be overburdened. This can create excessive wear and eventually lead to failure if left unchecked. In other cases, certain materials can build up on the screw and cause it to stall, effectively interrupting production.
2. Selecting the Wrong Auger Type
The screw or auger is the only part of a flexible screw conveyor that moves. That doesn’t mean only one type of screw will get the job done in every application. To get the best results possible from a flexible screw conveyor, it’s important to select the auger type that best suits the material you need to convey.
► Flat Wire Augers
Flat wire augers are used for conveying powders or other light materials because the flat conveying surface applies a more positive forward directional force on the product being conveyed and reduces the outward force against the tube wall.
► Beveled or Square Bar Augers
Beveled or square bar augers are specifically designed to convey difficult-to-handle or fragile material with minimal product degradation or damage.
► Round Wire Augers
Round wire augers are made from a coiled round bar and are mainly used for heavy or highly abrasive materials. The biggest asset of this auger design is its strength and flexibility, which minimizes the load imposed on it by material weight, particle shape or material size.
3. Ignoring Operational Requirements
Many applications require their flexible screw conveyors to perform intermittent or continuous operation. In both instances, special considerations must be made to ensure optimal equipment performance.
When conveyors must start and stop in a repetitive fashion under full load, some heavy materials may cause startup issues. To mitigate this problem, modifications can be made to the conveyor that will add to its structural strength and/or reduce the amount of material during startup. Flexible screw conveyors that perform non-stop for extended intervals need to be specifically designed for this type of operation and should be sized to run at an average speed range.
The Hapman Approach: Custom Solutions that Perform
Selecting the proper flexible screw conveyor is about more than moving material from point A to point B — it’s about designing a system that enhances your entire process. From matching auger types to specific materials to optimizing for continuous or batch operation, every detail matters.
At Hapman, we don’t deliver one-size-fits-all solutions. Our engineers design flexible screw conveyors that meet the exact demands of your material, environment, and production goals. The result is dependable performance, less downtime, and a system built to handle the long haul. Ready to improve performance and reliability? Contact our experts to discuss a tailored conveying solution.