to use roller chain on drives with horizontal shafting although vertical shaft drives ... shaft centres may be displaced horizontal at an incline or vertical with each ... having its own specific requirement horizontally displaced shafts and drives with ... with an inclination of over 60° to the horizontal additional maintenance is required to ... that chains are maintained in correct tension at all times if acceptable life is to ...
providing adequate adjustment of chain tension is available for very long centres ... with sprockets alternatively where rollers are well spaced idler sprockets can be ... of adjustable idler or sprung loaded tensioner on the slack strand of the chain ... an inclination of more than 60° to the horizontal see sketch idler or tensioner sprockets ... engage with idler sprockets automatic tensioners cannot be used on reversing drives or ... live roller conveyors usually have the rollers connected by coupled simple drives ... serpentine drive drive to 7 pairs rollers in film process m/c roller chain is ...