Seal arrangement for a high speed spindle with through the spindle cooling
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United States of America Patent
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Feb 17, 2015
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N/A
app pub date -
Nov 11, 2011
filing date -
Nov 11, 2011
priority date (Note) -
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Abstract
An arrangement for sealing a pressurized coolant system for a drawbar cylinder rod and a spindle drawbar in a machine tool utilizes a stationary mounting plate for supporting a piston plate and a drawbar cylinder rod. A pulley is mounted on the spindle for driving the spindle and a rotary seal that rotates with the spindle is mounted to the spindle. A non-rotating seal is mounted on the mounting plate. A planar sealing surface is formed by the contact between the non-rotating seal and the rotary seal, whereby a reliable fluid seal is formed between the rotating and the non-rotating structures of the pressurized coolant system.
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