Invention Grant
- Patent Title: Bearing arrangement for a deep drilling device
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Application No.: US15513746Application Date: 2015-09-03
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Publication No.: US10197100B2Publication Date: 2019-02-05
- Inventor: Stefan Scharting
- Applicant: Schaeffler Technologies AG & Co. KG
- Applicant Address: DE Herzogenaurach
- Assignee: Schaeffler Technologies AG & Co. KG
- Current Assignee: Schaeffler Technologies AG & Co. KG
- Current Assignee Address: DE Herzogenaurach
- Agency: Volpe and Koenig, P.C.
- Priority: DE102014220792 20141014
- International Application: PCT/DE2015/200451 WO 20150903
- International Announcement: WO2016/058602 WO 20160421
- Main IPC: F16C19/08
- IPC: F16C19/08 ; F16C19/18 ; F16C19/52 ; F16C21/00 ; F16C33/37 ; F16C33/60 ; F16C33/66 ; F16C17/02 ; F16C39/02

Abstract:
A bearing arrangement is disclosed for a drilling head, through which flushing liquid flows, of a deep drilling device, having multiple radially outer and radially inner bearing rings. Radially outer bearing rings are arranged coaxially over radially inner bearing rings, balls roll in raceways of the bearing rings, and the raceways are delimited axially on both sides by shoulders with mutually opposite shoulder surfaces. In order for a bearing arrangement to be of short axial extent and to simplify the construction, the internal diameter (Di) of the shoulder surfaces of the radially outer bearing rings and the external diameter (Da) of the shoulder surfaces of the radially inner bearing rings are dimensioned such that the shoulder surfaces perform the function of parallel radial plain bearings with a radial clearance (S).
Public/Granted literature
- US20170284469A1 BEARING ARRANGEMENT FOR A DEEP DRILLING DEVICE Public/Granted day:2017-10-05
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