The mechanism that drives the escalator handrail at a speed synchronised with the step belt to ensure passenger safety and comfort.
Full Definition
The escalator handrail drive system consists of rollers, friction wheels, and a drive belt that propel the rubber handrail around the balustrade at the same linear speed as the steps. Synchronisation is critical: if the handrail moves faster or slower than the steps, passengers may lose balance. The handrail drive is typically powered from the main step-chain drive via a gearbox or direct belt coupling. EN 115 specifies maximum permissible speed deviation and requires handrail tension monitoring.
