gearless traction

gearless traction

[¦gir·ləs ′trak·shən]
(mechanical engineering)
Direct drive, without reduction gears.
References in periodicals archive ?
a global leader in the elevator and escalator industry, has won an order to provide 19 gearless traction elevators at Fifth + Columbia, a 44-story office building to be constructed in Seattle's central business district.
Over the years, it has launched a variety of products equipped with advanced energy-saving features and technology for enhanced riding experiences, such as gearless traction machines using permanent-magnetic motors and variable-speed elevator systems.
Then came electricity and gearless traction, giving rise to the next wave of high-rise, typified by the Woolworth and the Singer buildings.
Permanent magnetic gearless traction machine reduces power consumption by 20% compared to worm-geared traction machine with inverter control
Gearless traction elevator with frequency control and energy recovery.
The project, which includes six gearless traction elevators, two hydraulic elevators and four Gen2(R) machine-roomless units, is scheduled to be completed by the end of December 2008.
In response to a growing demand for elevators with reduced environmental impact, the NEXIEZ series features a permanent magnetic (PM) gearless traction machine that hoists the ropes using PM motors.