Gear unit for a hydronic valve using o-ring
grabcad
The Grundfos Challenge is to create a design for a gear unit. To achieve easy assembly, I use an O-ring as a belt transmission in this concept. If you're searching for the STP file, it's located in "1. Assembly." In Parker's catalog, there's a section that suggests using an O-ring as a belt. The folder labeled "6. Calculations" contains both Excel and Word files; the Word document provides a concise summary of what I've done to design this unit (both Portuguese and English languages are used), while the Excel file displays equations indicating that 480-490 is the ideal reduction value range.
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