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The shortest SDS-plus masonry drill bits are about 110 mm overall length, and the longest 1500 mm. SDS-max is more common for larger rotary hammers and chipping guns, and common sizes start at 1 ⁄ 2 inch (13 mm) diameter up to 1 + 3 ⁄ 4 inches (44 mm) diameter. Standard lengths are 12 to 21 inches (300 to 530 mm).
A diamond core drill bit is intended to cut an annular hole in the workpiece. Large bits of similar shape are used for geological work, where a deep hole is drilled in sediment or ice and the drill bit, which now contains an intact core of the material drilled with a diameter of several centimeters, is retrieved to allow study of the strata.
The MAGPAK 9446 tape drive subsystem and associated 9401 tape cartridge [7] was developed by SDS for the SDS 900 series and announced in May 1964 [8] Each tape drive unit consists of two independently controlled magnetic tape drives mounted on a standard 10½-inch by 19-inch panel. [9] Data are recorded at 7.5 inches per second and 1,400 bits ...
An annular cutter (also called a core drill, core cutter, broach cutter, trepanning drill, hole saw, or cup-type cutter) is a form of core drill used to create holes in metal. An annular cutter, named after the annulus shape , cuts only a groove at the periphery of the hole and leaves a solid core or slug at the center.
The 940 was simply a commercialized version of the Genie design and remained backwardly compatible with their earlier models, with the exception of the 12-bit SDS 92. Like most systems of the era, the machine was built with a bank of core memory as the primary storage, allowing between 16 and 64 kilowords. Words were 24 bits plus a parity bit. [3]
Slotted Drive Shaft, a special shank on a hammer drill bit; see Rotary hammer § Special chuck; Software-defined storage, a marketing term for data storage; Special Direct System, a drill bit fixing system; Spoken dialog systems, technology allowing machines to converse with humans based on human voice and language
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