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A 19-inch rack is a standardized frame or enclosure for mounting multiple electronic equipment modules. Each module has a front panel that is 19 inches (482.6 mm ...
A rack rail, or rack strip, is used to mount rackable electronic hardware and 19-inch rack mount accessories within a 19-inch rack. [1] Within a rack a minimum of two rack rails are required to mount equipment. The height of rack rail is determined by the number of rack units required for mounting the equipment.
A rack railway (also rack-and-pinion railway, cog railway, or cogwheel railway) is a steep grade railway with a toothed rack rail, usually between the running rails. The trains are fitted with one or more cog wheels or pinions that mesh with this rack rail.
Rack with sample component sizes including an A/V half-rack unit. A rack unit (abbreviated U or RU) is a unit of measure defined as 1 + 3 ⁄ 4 inches (44.45 mm). [1] [2] It is most frequently used as a measurement of the overall height of 19-inch and 23-inch rack frames, as well as the height of equipment that mounts in these frames, whereby the height of the frame or equipment is expressed ...
A section of rail from a 19" server rack unit, showing how typical rack units 1U through 4U are distributed among the mounting holes. Date: 6 August 2007: Source: Own work, based on the public-domain image Server-Rack-Rail-Dimensions.gif at en.wikipedia: Author: Sakurambo: Permission (Reusing this file)
Strub rack system, originally Abt. Mount Washington Cog Railway, Bretton Woods, New Hampshire. Bio Diesel & live steam cog train operations with Marsh rack system, world's first to be used as a mountain railway (inaugurated in 1868). Quincy and Torch Lake Cog Railway, [9] cog rail tram opened in 1997. Hancock, Michigan.
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