Rotary screw machine with thrust balanced bearings
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United States of America Patent
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-
May 2, 1995
Grant Date -
N/A
app pub date -
Apr 12, 1994
filing date -
Nov 13, 1991
priority date (Note) -
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Abstract
In a rotary screw machine, a shaft journal (7) of one of the rotors (6) is mounted in main thrust bearings (9, 10) and a balancing thrust bearing (11 ), the latter being located outermost on the shaft journal (7). The main thrust bearings (9, 10) are clamped towards the low pressure end of the machine. The balancing thrust bearing (11) is affected by a thrust balancing device for counter-acting the gas forces on the rotor (6), thereby reducing the force that has to be transferred by the main thrust bearing.
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