🔍 Key Concepts
• Wear liner function – protects the main body of the equipment from abrasion by cargo/rock/flow
• Location of maximum wear – usually where material is sliding or impacting against a surface, often the inside of a cone or bowl
• Distinguish liners from structural parts – liners are usually bolted or seated against a heavier support structure and appear as a separate, replaceable layer
💭 Think About
• Look at each labeled part (G, N, P, R) and ask: which one is a thin, replaceable surface mounted on a thicker support rather than a solid structural member?
• Trace the likely flow or movement of material through this machine; where would rocks or cargo constantly rub against the metal?
• Check which label points to the inner surface of the working cone or bowl, not to fasteners, seals, or supporting rings.
✅ Before You Answer
• Verify which label is on the surface directly exposed to the moving material inside the cone/bowl.
• Confirm that the suspected wear liner appears as a separate piece sitting on or bolted to a heavier backing, indicating it can be replaced.
• Eliminate any labels that clearly indicate bolts, rings, or structural housing rather than a sacrificial wear surface.