Machine Room Less Elevators

Machine-room-less elevators include machinery and equipment into the hoistway or closets, doing away the need for a separate machine room. Designed for buildings between two and 30 stories, this system employs a smaller sheave than conventional geared and gearless elevators. 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. This design has been utilized outside the USA for at least 15 years and is becoming the standard product for low to low-mid rise buildings. Machine-roomless elevators are ideal for a variety of applications.