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Clock tower gear lubrication

Clock tower gear lubrication
Large clock towers like Big Ben require special thick greases that must last for years between maintenance visits. Unlike high-speed machinery, these massive gears move very slowly but carry enormous weight, demanding lubricants that resist being squeezed out under pressure. Some historic clock towers still use traditional animal-fat based greases that have proven remarkably effective for over a century. The grease must also withstand temperature changes throughout the seasons without hardening or becoming too runny.
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