shaft reduction

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• Reduction drive — A reduction drive is a mechanical device to shift rotational speed. A planetary reduction drive is a small scale version using ball bearings in an epicyclic arrangement instead of toothed gears.Reduction drives are used in engines of all kinds,… …   Wikipedia

• reduction gear — noun a system of gearwheels in which the driven shaft rotates more slowly than the driving shaft …   English new terms dictionary

• Drive shaft — This article is about the mechanical device. For the fictional music group from the American television series Lost , see Charlie Pace. Not to be confused with Axle. Drive shaft with universal joints at each end and a spline in the centre A drive …   Wikipedia

• Lithic reduction — The Levallois technique of flint knapping Lithic reduction involves the use of a hard hammer precursor, such as a hammerstone, a soft hammer fabricator (made of wood, bone or antler), or a wood or antler punch to detach lithic flakes from a lump… …   Wikipedia

• quill shaft — i. A long, thin, hardened steel shaft with splines on each end that connects the engine to the generator. ii. A form of torsional vibration damper used between the engine crankshaft and the propeller reduction gear. iii. A slim driveshaft or… …   Aviation dictionary

• single-shaft turboprop engine — A turboprop engine in which the propeller reduction gears are driven by the same shaft that drives the compressor for the gas generator. See geared engine …   Aviation dictionary

• iron processing — Introduction       use of a smelting process to turn the ore into a form from which products can be fashioned. Included in this article also is a discussion of the mining of iron and of its preparation for smelting.       Iron (Fe) is a… …   Universalium

• metallurgy — metallurgic, metallurgical, adj. metallurgically, adv. metallurgist /met l err jist/ or, esp. Brit., /meuh tal euhr jist/, n. /met l err jee/ or, esp. Brit., /meuh tal euhr jee/, n. 1. the technique or science of working or heating metals so as… …   Universalium

• tunnels and underground excavations — ▪ engineering Introduction        Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …   Universalium

• Overdrive (mechanics) — For other uses, see Overdrive. An overdrive is sometimes a separate unit that fits into the back of a gearbox, as with this Fairey unit. A plate warns to only engage the unit in third and fourth gears …   Wikipedia

• Transmission (mechanics) — Gearbox redirects here. For the video game developer, see Gearbox Software. 5 speed gearbox + reverse, the 1600 Volkswagen Golf (2009). A machine consists of a power source and a power transmission system, which provides controlled application of …   Wikipedia