Traction Elevator

The reduced sheave size, together with a redesigned machine, allows the machine to be mounted within the hoistway itself—eliminating the need for a bulky machine room on the roof. The machine–room-less elevator is the result of technological advancements that often allow a significant reduction in the size of the electric motors used with traction equipment. These newly designed permanent magnet motors (PMM) allow the manufacturers to locate the machines in the hoistway overhead, thus eliminating the need for a machine room over the hoistway.