Heavy-Duty Magnetic Drums.Walker Magnetics is offering a line of heavy-duty magnetic drums An early high-speed, direct access storage device that used a magnetic-coated cylinder with tracks around its circumference. Each track had its own read/write head. Magnetic drums were used in the 1950s and 1960s. up to 120-in.-wide that have been designed for use in steel and gray iron foundries. Manufactured in axial axial /ax·i·al/ (ak´se-al) of or pertaining to the axis of a structure or part. ax·i·al adj. 1. Relating to or characterized by an axis; axile. 2. and radial pole designs, they are available in diameters from 30-72 in. The drums, which feature 0.375-0.625-in.-thick manganese manganese (măng`gənēs, măn`–) [Lat.,=magnet], metallic chemical element; symbol Mn; at. no. 25; at. wt. 54.938; m.p. about 1,244°C;; b.p. about 1,962°C;; sp. gr. 7.2 to 7. shells, are equipped with spherical roller bearings and sealed to allow maintenance while the drum is rotating. Nonmagnetic drum heads provide long wear characteristics. |
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