Nei settori in cui l’igiene è fondamentale, come l’industria alimentare e delle bevande, gli ambienti umidi sono più la regola che l’eccezione.
I nastri trasportatori sono quotidianamente esposti a umidità, detergenti aggressivi e lavaggi ad alta pressione. La scelta del giusto sistema di azionamento per queste linee di produzione è cruciale. Un riduttore standard semplicemente non è progettato per resistere a queste condizioni estreme. Ma quale riduttore rappresenta allora la scelta migliore?
The Challenge of Moisture and Cleaning
When driving conveyor systems in applications such as meat processing, vegetable washing systems, or bottle washing machines, the drive system is continuously exposed to moisture and intensive cleaning. With standard aluminum or cast-iron drive systems, this quickly leads to corrosion. This shortens the lifespan of the components and increases the risk of rust formation, dirt accumulation, and contamination within the production process.
In addition, standard gearboxes with sharp corners and difficult-to-clean surfaces create ideal locations for dirt accumulation and bacterial growth. In environments where strict EHEDG and FDA guidelines apply, this can lead to contamination, product recalls, and reputational damage. A smooth, rounded, and hygienic design is therefore essential.
Why Stainless Steel Is the Industrial Standard
For wet environments, stainless steel is the only reliable choice. A stainless steel gearbox is resistant to corrosion and can easily withstand aggressive cleaning chemicals. At Dertec, we specialize in stainless steel drive components with a unique Hygienic Design. This means rounded shapes, smooth surfaces, and the complete elimination of dead spaces or seams where water and product residues can remain.
Which Type of Stainless Steel Gearbox Best Fits Your Conveyor System?
The choice of the specific gearbox version depends on the load, the available installation space, and the desired energy efficiency. Historically, worm gearboxes are still widely used for conveyor systems. However, this is a friction-based transmission with relatively low efficiency and, as a result, significant heat generation.
Dertec still offers a wide range of worm gearboxes, but in the context of energy efficiency and new technology, we recommend the following two stainless steel solutions for conveyor systems in the food industry:
- Stainless Steel Hypoid Gearboxes: The hypoid gearbox is a very popular and energy-efficient choice for many standard conveyor systems. They are extremely compact and provide a right-angle transmission, which saves significant installation space along the conveyor line. Thanks to the smooth, rounded stainless steel housing, they are also quick and easy to clean.
- Stainless Steel Bevel Gearboxes: When the conveyor system is subjected to heavier loads or when reducing energy costs is the highest priority, a stainless steel bevel gearbox is the best investment. Bevel gearboxes have a significantly higher mechanical efficiency than worm gearboxes. Especially on continuously operating conveyor lines, this results in lower energy costs and reduced heat generation.
IP69K and Perfect Sealing
In addition to the material (stainless steel) and the design (Hygienic Design), sealing is the critical success factor in wet environments. A gearbox for wet areas must have an IP69K protection rating. This guarantees that the components are fully resistant to intensive cleaning with high-pressure water and high temperatures. Combined with high-quality shaft seals and the use of food-grade lubricants, you are assured of a safe and durable drive system.
Conclusion: The Total Solution Matters
The best gearbox for your conveyor system in a wet environment is a stainless steel gearbox with a hygienic design and an IP69K rating. Depending on your installation requirements and efficiency goals, you can choose between a worm gearbox or a bevel gearbox solution.
To truly optimize operational costs, it is recommended to combine this gearbox with a highly energy-efficient stainless steel motor (IE3, IE4, or even IE5).
Need help with the selection? Finding the right balance between operational efficiency, durability, and strict safety protocols is an ongoing challenge. The engineering team at Dertec is happy to assist you. Contact us for reliable, tailor-made advice.