Which material is typically selected for bearing liners_______________?
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Answer: D. babbit metal
Explanation
Babbitt metal features a low melting point and excellent anti friction properties. It embeds small foreign particles, protecting rotating shafts from heavy wear. These characteristics make it the ideal material for industrial bearing liners. Babbitt alloys are typically composed of tin, lead, antimony, and copper. Bearing liners require soft matrix materials with hard embedded microstructures. Isaac Babbitt invented this specialized white metal alloy in 1839.
Large steam turbine bearings utilize Babbitt metal liners for smooth operation. Reciprocating compressor crankshafts rely on Babbitt bearings to reduce friction. Industrial machinery maintenance includes rebabbitting worn bearing surfaces. Option A gun metal is a copper alloy that is too hard for soft bearing liners. Option B bronze is used for heavy duty bushings rather than soft liners. Option C bell metal is extremely brittle and used for musical instruments.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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