Numerous factors determine the life span of today's motors. In addition to light-running oils and clean-burning gas, mechanical parts like motor chains are responsible for a long life-span of modern motors. Every motor has normal mechanical wear. Keeping that mechanical wear to a minimum extends the life of the motor.
Motor control chains often serve as a link between the crankshaft and the camshaft of a drive. Motor chains that are tightened regularly work flawlessly up to a maximum abrasion elongation of two percent. If the motor chain is not tightened, the return strand starts to sag and the chain takes on an unsteady run that promotes abrasion. Damage to the motor will occur if the chain lacks the correct degree of tension.
Motor chains with a minimum wear can greatly extend motor life-span. The company iwis, a chain manufacturer in Munich, Germany produces high-precision chains and is a supplier to many automotive manufacturers.