🔍 Key Concepts

• Wire rope bending over sheaves and the effect of sheave size and throat dimensions • The purpose of lubrication in wire rope life and what types are generally acceptable • Effect of operating speed of winches on wire rope stress and failure

💭 Think About

• Look at each choice and ask: does this increase bending stress, crushing, abrasion, or internal fatigue in the wire rope? • How does the relationship between sheave diameter and rope diameter usually work: is larger generally better or worse for rope life? • Does a tight or undersized groove/throat in a sheave affect how the load is distributed across the rope strands?

✅ Before You Answer

• Verify which option would create excessive localized stress on the rope strands rather than distributing the load evenly • Check whether a larger sheave diameter typically improves or worsens rope life • Confirm that proper lubrication and normal operating speeds are usually protective, not damaging, to wire rope when correctly applied