Depending on the specific mechanical context or industry, several alternative words and technical terms can replace pulley. Common synonyms and related hardware terms include sheave, block, wheel, drum, roller, winch drum, and tackle. In marine and sailing terminology, a pulley enclosed within a housing is universally referred to as a block (as in block and tackle). In industrial manufacturing and automotive systems, terms like drive wheel, belt roller, or sheave are standard. You can verify these synonyms through mechanical engineering glossaries and maritime hardware catalogs.
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