Elevators are classified into three basic types based on their functioning principle.
Hydraulic,
Traction and
Machine-Room-LessElevators
Traction elevators work on the basic traction principle, using ropes or high-tensile wires.
Energy-efficient
Used in mid and high-rise applications.
Traction elevators are of two types, namely gear and gear-less. In gear elevators, the wheel that controls the cables that lift or lower the elevator is connected to a gearbox, which is attached to the motor. On the other hand, gearless traction elevators are set into motion by a wheel that is directly connected to the motor. These gearless traction elevators have high installation costs and medium maintenance costs but are the most energy-efficient.
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