Checking Chain Tension
During the first few hours of operation, check that the tension on the chains is correct.
The flexion on a chain should be about 2% of the distance between the shafts of the drive sprocket and idler wheel, flexion being measured on section of chain opposite the tensioner. The chain must not hang on side with the tensioner.
Example: If the distance between the shafts of the drive sprocket and idler wheel is 250 mm (10 in.), the chain should not hang by more than 5 mm (0.2 in.).
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Loose chains cause premature and excessive wear on the roller elements of the chain links, the sprocket teeth and possibly the drive components of the machine.
Chains that are too tight cause excessive pressure on the chain, the bearings and the shafts.
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