TRACTION MACHINES

traction

Geared traction machines are driven by AC or DC electric motors. Geared machines use worm gears to control mechanical movement of elevator cars by "rolling" steel hoist ropes over a drive sheave which is attached to a gearbox driven by a high-speed motor. These machines are generally the best option for basement or overhead traction use for speeds up to 500 feet per minute (3 m/s)

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traction
traction
traction
traction
traction
traction
traction
traction