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improves work environment · increases productivity and profits · eliminates the need for ... costly hard-to-work-around soundproof enclosures selection guidelines sizes ... interchangeable with ansi chain use standard sprockets available in sizes 40 through ... 80 u.s tsubaki inc roller chain division ... minimum tensile strength higher than ansi standard minimums ... operating temperatures allowable speed 14°f to 140°f 650 ft min shhhh pin ... 0.581 0.758 l 0.709 0.886 1.110 1.417 shhhh now you can reduce workplace noise to a ... whisper low noise chain specifications in inner link s inner width w 0.312 0. ... 0.500 0.625 chain 40sn 50sn 60sn 80sn pitch no p .500 .625 .750 1.000 roller ...