How do various types of loads affect the gear torque rating?
A – Gear torque ratings are based upon a uniform steady torque load. Dynamic or shock loads impose stresses which can exceed gearing strength or cause early fatigue failure. To a certain extent, this can be compensated by reducing the gear torque rating (see Service Factor Table). However, dynamic braking with inertial loads or locking of the output shaft can force the gearing to absorb destructive amounts of kinetic energy stored in the momentum of the load or the rotor with immediate or rapid failure.
