Invention Grant
- Patent Title: Radial roller bearing having hollow rollers
- Patent Title (中): 径向滚子轴承具有中空辊
-
Application No.: US12515777Application Date: 2007-11-16
-
Publication No.: US08210754B2Publication Date: 2012-07-03
- Inventor: Bernd Endres , Christian Hoffinger , Carsten Merklein
- Applicant: Bernd Endres , Christian Hoffinger , Carsten Merklein
- Applicant Address: DE Herzogenaurach
- Assignee: Schaeffler Technologies AG & Co. KG
- Current Assignee: Schaeffler Technologies AG & Co. KG
- Current Assignee Address: DE Herzogenaurach
- Agency: Lucas & Mercanti, LLP
- Agent Klaus P. Stoffel
- Priority: DE102006055027 20061122
- International Application: PCT/DE2007/002081 WO 20071116
- International Announcement: WO2008/061507 WO 20080529
- Main IPC: F16C33/34
- IPC: F16C33/34

Abstract:
A radial roller bearing shafts in wind turbine transmissions, which includes an external bearing ring with an inner runway, an internal bearing ring arranged coaxial thereto which has an outer raceway and roller bodies on runways between bearing rings spaced circumferentially by a bearing cage and distributed uniformly on a circumference replaced by hollow rollers. To prevent slip, the hollow rollers have a greater diameter and lower modulus of elasticity ensuring, in a load-free state, continuous contact by the radial roller bearing with the bearing rings and continuous drive for the bearing cage and roller bodies at kinematic rotation speed. The hollow rollers have increased bending fatigue strength, and their inner envelope surfaces are formed by mechanical processing for further inherent compression stresses of at least −200 MPa, superimposed on the hollow rollers maximum load stress along with the inherent compression stresses resulting from their heat treatment.
Public/Granted literature
- US20100021101A1 RADIAL ROLLER BEARING, IN PARTICULAR FOR STORING SHAFTS IN WIND TURBINE TRANSMISSIONS Public/Granted day:2010-01-28
Information query