(1) low wear. traction machine for elevators, the biggest advantage is that there is no transmission structure, in addition to the rotor shaft (it is also a traction axis) on a set of bearings, never any mechanical wear, no wear and tear, the natural extension of the drag lead the life of the machine. (2) energy-saving. The gearless traction machine because there is no transmission structure, there is no mechanical power loss, relatively speaking, it saves energy and running expenses. Load 1000kg elevator speed of 1.00m / s VVVF elevators, for example: OTIS gear traction machine (the traction ratio 1:1) need to 11kW; Weber gearless machine (traction ratio of 2:1) Just 6.7kW. (3) ease of installation. Drag wheel is fixed directly to the shaft of the motor, compact structure and small size, light weight, ease of lifting and transportation, on-site installation will be easier and more still load 1000kg, elevator speed 1.00m / s VVVF elevators, for example:OTIS gear traction machine 17CT, weight 1300kg; Weber gearless machine the WEB-1.0-1000, weight 300kg. (4) running smoothly. The absence of transmission structure, there is no belt drive lost turn, slip, elevator leveling of high precision, reliable operation; there is no gear noise and vibration, and thus the performance of the lift running smoothly, low noise, which is Elevator green revolution the salient features. (5) fuel efficient. Gearless traction machine Since no transmission structure, it eliminates the need for traditional deceleration box lubricants, only a sufficient amount of grease in the bearing memory. Daily lubrication replacement cumbersome Maintenance does not exist, and also to avoid the pollution lubricant leakage and maintenance difficulty, but also saves the lubricating oil costs. (6) is easy to use. Gearless traction machine for elevators with no liquid lubricants, there is no leak, not only there is no pollution, and can be any gesture installation, such as bottom-up hanging at the roof of the hoistway.
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