🔍 Key Concepts
• Construction and design of different shaft couplings (flexible disk, grid, gear, and block & jaw)
• How damage is distributed in each type of coupling (sacrificial elements vs. machined bodies)
• Typical maintenance practice: which parts are meant to be replaced vs. repaired/machined
💭 Think About
• For each coupling type, ask yourself: Is it built from many small, replaceable elements or from a few precision‑machined pieces?
• Which coupling is most likely to be considered a disposable unit if badly damaged, rather than something you would machine, re-bush, or re-sleeve?
• Think about alignment and balance: which coupling type becomes unsafe or impractical to restore to proper tolerance once it is badly damaged?
✅ Before You Answer
• Identify which coupling relies on precision gear‑like or interlocking metal parts that must be perfectly aligned
• Decide which coupling has easily replaceable flexible elements (springs, grids, blocks, or disks) versus replacing the entire coupling
• Consider which design, when "completely damaged," would most likely be changed out as an assembly instead of attempting repair