Flender/Flender Gear Units/Helical gear reducers H3
ch as shafts and belts, to transmit motion between input and output shafts at constant ratio. 2,3 Gears are available

in variety of sizes, shapes, and materials; the choice depends on the application. 4 Applications Gears and gear products have

applications in most types of powered machinery. They are essential for the operation of vehicles and industrial machinery as well

as aircraft and ships. For the purposes of this study, there are four principal applications of gears and gear products

that wilibe : motor vehicle gearing, which includes both on-road and off-road vehicles; industrial gearing for products ranging from steel mills to photocopy machines; aerospace gearing and marine gearing for military and commercial ships and pleasure craft. Motor Vehicle Gearing Motor vehicle, or "vehicle," gearing falls into number of different SIC codes: 6 vehicle gearing for automobiles, trucks, and buses is classified under SIC 3; gears for vehicles used in the construction industry are found under SIC 3; and gearing for agricultural vehicles is included in SIC 3. Vehicle gearing includes gearing used in drive assemblies, such as transmissions, and in engines, as well as other applications, such as rack- and-pinion steering and windshield-wiper ass- emblies. Generally, these gears are mass produced. Industrial Gearing Industrial gears and gearing fall under SIC 3. Industrial gearing is used in machinery and David Macaulay, The Way Things Work (Boston, , . 4. 2 John . Leming, "Basic Gearing," presented at 1th Annual Gear Manufacturing Symposium, Apr. 1-.1,1, . 1. 3 In the nomendature of the Industry, of two gears that run together, the one with the larger number of teeth is called the gear." The pinion is the gear with the smaller number of teeth. See also American Gear Manufacturers Association, Gear Nomenclature (Geometry), Terms, Definitions, Symbols, and Abbreviations (Arlington, VA, , pp. 1-2. Ibid. 5 The Standard In