PLANET GEARBOX WITH CYLINDRICAL ROLLER BEARING WITH UNDER RACE LUBE SCHEME

Title:

PLANET GEARBOX WITH CYLINDRICAL ROLLER BEARING WITH UNDER RACE LUBE SCHEME

Document Type and Number:

Japanese Patent JP2017078510

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide a planet gearbox with a cylindrical roller bearing with an under race lube scheme.SOLUTION: A planet gear rotatable on a planet bearing with cylindrical rollers is mounted on a carrier of an epicyclic gearing arrangement. Either the cylindrical outer surface of a support pin or an opposing cylindrical inner surface of an inner ring of the planet bearing includes a network of interconnected grooves. The support pin includes oil feed holes intersecting the grooves. Passages through the inner ring of the planet bearing also connect to the grooves. A gas turbine engine includes a fan and an LP shaft, which couples a compressor to a turbine. The epicyclic gearing arrangement has a single input from the LP shaft coupled to a sun gear, a single output coupled to the shaft of the fan, and a planet bearing with a network of interconnected grooves.SELECTED DRAWING: Figure 1

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Inventors:

HASTING WILLIAM HOWARD
FISHER KENNETH LEE
DONALD ALBERT BRADLEY
JOSEPH ROBERT DICKMAN

Application Number:

JP2016196840A

Publication Date:

April 27, 2017

Filing Date:

October 05, 2016

Export Citation:

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Assignee:

GENERAL ELECTRIC CO GE

International Classes:

F16H57/04; F02C3/107; F02C7/36; F02K3/06; F16H1/28

Domestic Patent References:

JP2015514194A	2015-05-18
JP2011220495A	2011-11-04
JPS5392069A	1978-08-12

Foreign References:

WO2014162636A1

2014-10-09

Attorney, Agent or Firm:

Arakawa Satoshi
Hirokazu Ogura
Toshihisa Kurokawa
Takuto Tanaka

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