page_title: Elevator
section_title: Machine room-less (MRL) elevators
hierarchical_section_title: Elevator / Design / Machine room-less (MRL) elevators
caption_attribution_description: English: This is the Kone Ecodisc, an MRL elevator drive system
context_page_description: An elevator or lift is a type of vertical transportation machine that moves people or freight between floors, levels, or decks of a building, vessel, or other structure. Elevators are typically powered by electric motors that drive traction cables and counterweight systems such as a hoist, although some pump hydraulic fluid to raise a cylindrical piston like a jack.
  In agriculture and manufacturing, an elevator is any type of conveyor device used to lift materials in a continuous stream into bins or silos. Several types exist, such as the chain and bucket elevator, grain auger screw conveyor using the principle of Archimedes' screw, or the chain and paddles or forks of hay elevators. Languages other than English may have loanwords based on either elevator or lift. Because of wheelchair access laws, elevators are often a legal requirement in new multistory buildings, especially where wheelchair ramps would not be possible.
  There are also some elevators which can go sideways in addition to the usual up-and-down motion.
context_section_description: Machine room-less elevators are designed so that most of the components fit within the shaft containing the elevator car; and a small cabinet houses the elevator controller. Other than the machinery being in the hoistway, the equipment is similar to a normal traction or hole-less hydraulic elevator. The world's first machine room-less elevator, the Kone MonoSpace was introduced in 1996, by Kone. The benefits are:
  creates more usable space
  use less energy (70–80% less than standard hydraulic elevators)
  uses no oil (assuming it is a traction elevator)
  all components are above ground similar to roped hydraulic type elevators (this takes away the environmental concern that was created by the hydraulic cylinder on direct hydraulic type elevators being stored underground)
  slightly lower cost than other elevators; significantly so for the hydraulic MRL elevator
  can operate at faster speeds than hydraulics but not normal traction units.
caption: Kone EcoDisc. The entire drive system is in the hoistway
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