Steel transmission roller chain is made to close
tolerances with excellent joint articulation,
permitting a smooth efficient flow of power.
Any friction between the chain rollers and
sprocket teeth is virtually eliminated because
the rollers rotate on the outside of the bushes,
independent of bearing pin articulation inside
the bush. As a result, very little energy is wasted
and tests have shown chain to have an efficiency
of between 98.4% and 98.9%