A toothed or V-belt drive component in the elevator door operator that transmits torque from the door motor to the door hanger assembly.
Full Definition
The door belt connects the door operator motor output shaft or gearbox to the door drive mechanism (rack, hanger drive, or cam). Toothed (timing) belts are most common in modern operators as they provide precise position control without slip. V-belts are used in some older or heavy-duty door operators. Belt condition — cracking, elongation, tooth wear, or misalignment — directly affects door position accuracy and must be checked at each periodic maintenance visit. A broken belt results in complete loss of automatic door operation.
