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Gearless Traction / MRL Elevators

Gearless traction elevators are used in high speed and high rise applications. Such elevators use a permanent magnet motor. The use of the MRL elevator will save a significant amount of energy (estimated at 70-80%) as compared to hydraulic elevators. The power feeders for the MRL are also significantly reduced due to the more efficient design and the counter-balancing provided with traction equipment. The MRL elevator utilizes a gearless traction type machine, which results in superior performance and ride quality compared with hydraulic elevators.

MRL’s can also operate at faster speeds thus increasing the perception of quality over a conventional hydraulic elevator. Such lifts can travel in speeds up to 500 ft/min. In this type of elevator, the MRL machine is placed inside the elevator shaft thereby reducing the space required for the elevator machine room.