The use of chain can be traced back some 3 000 years. Early chains were made from rope and wood (in the form of a rope ladder which ran on wooden wheels) and were only suitable for slow hand drives. In medieval times, faster drives incorporating blacksmiths ‘dog’ chain with wheels designed to engage alternate links were developed; these were followed by wire chain with U-shaped eye links having a straight base.
KeywordsCentre Distance Chain Drive Outer Plate Marine Diesel Engine Roller Chain
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