Renold Chain Troubleshooter

Application	Sprockets fitted at the end of a conveyor
Failure mode	Severe hooking wear of the sprocket teeth has been compounded with a second phase of hooked wear.
Diagnosis	The original chain and sprockets have followed normal wear patterns with hooked wear of the sprocket teeth and pitch elongation of the chain. A new chain has then been fitted to the old wheels which have a worn tooth incompatible with the pitch of the new chain. The result is severe secondary wear of the sprocket teeth and probably very rapid chain pitch extension.
Solution	Always check the condition of the existing sprocket teeth before fitting a new chain to any system. In this case the sprockets must be renewed and the chain checked for damage.