What material is typically used to fit inside naval strut bearings?

What material is typically used to fit inside naval strut bearings?

• A. Wood or Synthetic Material
• B. Steel
• C. Bronze
• D. Plastic

Answer: (A)

The part inside a naval strut bearing is lined with a softer material to form the actual bearing surface. Wood has long been used because it provides a forgiving, self-lubricating-like surface that cushions the shaft and can be impregnated with oil to hold lubrication. Modern practice often uses synthetic materials (polymers or composite liners) for improved wear resistance, lower friction, and easier replacement, while still being softer than the metal shaft to protect it. This softer lining protects the shaft from scoring and distributes loads more evenly, which is why the inside of strut bearings is typically wood or a synthetic material rather than a solid metal like steel or bronze.

The part inside a naval strut bearing is lined with a softer material to form the actual bearing surface. Wood has long been used because it provides a forgiving, self-lubricating-like surface that cushions the shaft and can be impregnated with oil to hold lubrication. Modern practice often uses synthetic materials (polymers or composite liners) for improved wear resistance, lower friction, and easier replacement, while still being softer than the metal shaft to protect it. This softer lining protects the shaft from scoring and distributes loads more evenly, which is why the inside of strut bearings is typically wood or a synthetic material rather than a solid metal like steel or bronze.