Ingegneria meccanica: riduttori di velocità
| English |
| gear |
  |
|
| Part of speech |
noun count.
|
| Definition |
machine component consisting of a toothed wheel attached to a rotating shaft. Gears operate in pairs to transmit and modify rotary motion and torque (turning force) without slip, the teeth of one gear engaging the teeth on a mating gear. Most gears are circular. Parallel shafts can be connected by gears with teeth that are straight lengthwise and parallel to the shaft axes (spur gears) or by gears with twisted, screwlike teeth (helical gears). Intersecting shafts are connected by gears with tapered teeth arranged on truncated cones (bevel gears). Nonparallel, nonintersecting shafts are usually connected by a worm and gear.
|
| Definition source |
(1999-2000) "Britannica.com". http://search.britannica.com/
|
| Context |
Integer gear reduction ratios are available from 4:1 to 100:1 with efficiencies of 97% for single-stage and 94% for two-stage gears.
|
| Context source |
(2000) "SEW-Eurodrive- Mechanical Drives" http://www.seweurodrive.com/prod_m.html
|
| Subject field |
Mechanics
|
| Comprehensive concept |
gearmotor, gear case, gear box, gear unit, worm gear, helical gear, gear ratio
|
| de |
Zahnrad
|
| it |
ingranaggio
|
| Reliability code |
3
|
|
