US 2002/0117015 A1Published application

Rotary bearing with lubricant passage arrangement, and threaded drive with rotary bearing-supported threaded nut

AssigneeRexroth Star GmbH

InventorRoland Greubel

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Abstract

A rotary bearing has a first lubricant passage having one end which opens in an inner peripheral surface of a radially outer bearing part and another end which is connectable with a lubricant supply, at least one second lubricant passage which leads from an outer peripheral surface of a radially inner bearing part to an inner peripheral surface of the radially inner bearing part, and a ring chamber between the outer bearing part and the inner bearing part, in which the first lubricant passage and the second lubricant passage open the ring chamber, and a lubricant distributing element formed as a separate part arranged on the ring chamber, and is in a lubricant supplying connection with at least one lubricant passage, and outflow paths including a first outflow path for supplying lubricant to the engaging surfaces of the bearing parts, and a second outflow path for supplying lubricant through the second lubricant passage to a further lubricating point.

Claims29

Dependent claims

A rotary bearing, comprising a radially inner bearing part and a radially outer bearing part rotatable relative to one another about an axis;

a lubricant passage arrangement for supplying a lubricant both to engaging surfaces of said radially inner bearing part and said radially outer bearing part and also to a further lubricating point, said lubricant passage arrangement including at least one first lubricant passage having one end which opens in an inner peripheral surface of said radially outer bearing part and another end which is connectable with a lubricant supply, at least one second lubricant passage which leads from an outer peripheral surface of said radially inner bearing part to an inner peripheral surface of said radially inner bearing part, and a ring chamber between said inner peripheral surface of said outer bearing part and said outer peripheral surface of said inner bearing part, said at least one first lubricant passage and said at least one second lubricant passage opening in said ring chamber;
a lubricant distributing element formed as a separate part which is arranged in said ring chamber, said lubricant distributing element being in a lubricant supplying connection with said at least one first lubricant passage;
means forming at least one first outflow path associated with said lubricant distributing element for supplying lubricant to the engaging surfaces of said bearing parts, and means for providing at least one second outflow path associated with said lubricant distributing element for supplying lubricant through said at least one second lubricant passage to said at least one further lubricating point.

Dependencies are inferred from the claim text.

Facts

Application: 10/079,013Filed 19 Feb 2002
Priority: DE 101 07 706.819 Feb 2001
Published: 29 Aug 2002
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

F16C 19/184
With two rows at opposite angles: in O-arrangement
F16C 33/60
Raceways; Race rings: divided or split, e.g. comprising two juxtaposed rings
F16C 33/6674
Details of supply of the liquid to the bearing, e.g. passages or nozzles: related to the amount supplied, e.g. gaps to restrict flow of the liquid
F16C 33/6677
Details of supply of the liquid to the bearing, e.g. passages or nozzles: from radial inside, e.g. via a passage through the shaft and/or inner ring