Belt Drive Openers
Belt drive openers are chain drive openers in disguise. As one of the three main types of drive guides for garage door trolley systems, the basic difference among the belt and chain drive is that the belt is quiet. This is due to the fact that there is a rubber belt running along the rail instead of a naked chain which eliminates the noise level to zero since there is no rubbing among steel parts as in the case of the chain drive option. The belt drive choice is steel covered with rubber and simply means the movement of the guide is soft, it doesn't cause vibrations, and its contact with other parts is not noisy. In other words, the greatest advantage of belt drive openers is their silence.
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Belt drive garage door openers work like the chain ones. The motor transfers its power to the belt drive, which travels along the rail and in turn transfers this power to the trolley. The trolley takes its turn to transfer power to the door arm, which actually moves the door. For the avoidance of misunderstandings, it is not the opener and its drive guide system which actually opens the door. The door moves thanks to all garage door parts but mainly due to the cable/spring system. The opener helps and contributes with its electric power while the belt drive system guides the movement of the door to its full closing and opening position.