Drive Chains Tension

During the first few hours of operation, check that the tension on the chains is correct.

The flex on a chain should be about 2% of the distance between the shafts of the drive sprocket and idler sprocket, flexion being measured on a section of chain opposite the tensioner.

The chain must not flex on the tensioner side.

Example: If the distance between the shafts of the drive sprocket and idler sprocket is 250 mm (10 in.), the chain should not hang by more than 5 mm (0.2 in.).

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 sprockets, the bearings and the shafts.

AG,GG05155,603 -19-04MAR02-1/1