Metal deforming – By use of roller or roller-like tool-element – With carrier for roller-couple or tool-couple
Patent
1985-03-12
1986-12-23
Husar, Francis S.
Metal deforming
By use of roller or roller-like tool-element
With carrier for roller-couple or tool-couple
72201, 72236, 277 56, 384480, B21B 2710, B21B 3107
Patent
active
046304584
ABSTRACT:
A bearing isolator assembly particularly for use in a roll mill for isolating the environment from the support shaft bearing. A first isolator ring is non-rotatably mounted on the shaft and is concentric with and rotatable relative to a pair of fixed isolator rings which concentrically surround the shaft and are fixed to a support housing. These isolator rings defines therebetween a narrow clearance space which defines a tortuous path which initially includes a U-shaped labyrinth, one end of which communicates with the environment, and the other end of which communicates with an enlarged annular collection chamber which has a drain port associated therewith. This collection chamber is behind a dam associated with the rotatable isolator ring, and the downstream side of the dam is positioned closely adjacent a radial wall on the fixed isolator ring to define a narrow passage therebetween. This narrow passage, and the rotation of the dam, exerts sufficient centrifugal force to prevent the fluid from flowing radially inwardly so that the fluid is returned to the collection chamber.
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"Selection of Backup Roll Bearings for Nonferrous Strip Mills", D. Hobson, Journal of the American Society of Lubrication Engineers, Apr. 1983, vol. 40, 5, pp. 277-284.
"Elimination of Bearing Housing Contamination in General-Purpose API Centrifugal Pumps", Barnard and Sowrey, Journal of ASLE, vol. 40, 5, 285-289.
Product Engineering Design Manual, edited by Douglas C. Greenwood, McGraw Hill, 1959, pp. 306-313.
Durametallic Corporation
Husar Francis S.
Katz Steve
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