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US 2004/0200670 A1Published application
Rotary feed-through
AssigneeOtt-Jakob Spanntechnik GmbH
InventorsLudwig Jakob, Josef Greif, Wolfgang Bechteler
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AssigneeOtt-Jakob Spanntechnik GmbH
InventorsLudwig Jakob, Josef Greif, Wolfgang Bechteler
Estimating the term…
A rotary feed-through, which contains a hollow shaft, which is supported in a first housing part so that it can rotate, with a first sealing surface and a sealing bushing, which is arranged rotationally fixed within a second housing part and which is coaxial with the hollow shaft, with a second sealing surface for contact to the first sealing surface. In order to also enable lower leakage losses, in addition to less wear, with the supply of cooling lubricants and compressed air, the second housing part contains a first lateral supply channel, which can be attached to a coolant supply line or a compressed air supply line, for the supply of cooling lubricant or compressed air via at least one radial opening of the sealing bushing and a second supply channel, which is charged during the supply of cooling lubricant, for the supply of cooling lubricant to a pressure piston, which closes the rear end of the sealing bushing, to increase the contact pressure of the sealing surfaces.
Rotary feed-through for the selective supply of cooling lubricant or air to a rotating machine part, which contains a hollow shaft, which is supported so that it can rotate in a first housing part, with a first sealing surface, and a sealing bushing, which is arranged rotationally fixed within a second housing part and which is coaxial with the hollow shaft, with a second sealing surface for contact to the first sealing surface, characterized in that the second housing part contains a first lateral supply channel, which can be attached to a coolant supply line or a compressed air supply line, for the supply of cooling lubricant or compressed air via at least one radial opening of the sealing bushing and a second supply channel, which is charged during the supply of cooling lubricant, for the supply of cooling lubricant to a pressure piston closing the rear end of the sealing bushing to increase the contact pressure of the sealing surfaces.
Dependencies are inferred from the claim text.