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1. WO2006101989 - METHOD OF PROTECTING ROLLING ELEMENT BEARINGS AGAINST OIL-OUT CONDITIONS AND BEARING MADE THEREBY

Publication Number WO/2006/101989
Publication Date 28.09.2006
International Application No. PCT/US2006/009538
International Filing Date 16.03.2006
Chapter 2 Demand Filed 11.12.2006
IPC
F16C 33/66 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; MECHANICAL MEANS FOR TRANSMITTING MOVEMENT IN A FLEXIBLE SHEATHING; ELEMENTS OF CRANKSHAFT MECHANISMS; PIVOTS; PIVOTAL CONNECTIONS; ROTARY ENGINEERING ELEMENTS OTHER THAN GEARING, COUPLING, CLUTCH OR BRAKE ELEMENTS; BEARINGS
33Parts of bearings; Special methods for making bearings or parts thereof
30Parts of ball or roller bearings
66Special parts or details in view of lubrication
F16C 33/36 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; MECHANICAL MEANS FOR TRANSMITTING MOVEMENT IN A FLEXIBLE SHEATHING; ELEMENTS OF CRANKSHAFT MECHANISMS; PIVOTS; PIVOTAL CONNECTIONS; ROTARY ENGINEERING ELEMENTS OTHER THAN GEARING, COUPLING, CLUTCH OR BRAKE ELEMENTS; BEARINGS
33Parts of bearings; Special methods for making bearings or parts thereof
30Parts of ball or roller bearings
34Rollers; Needles
36with bearing-surfaces other than cylindrical, e.g. tapered; with grooves in the bearing surfaces
CPC
F16C 19/364
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
19Bearings with rolling contact, for exclusively rotary movement
22with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
34for both radial and axial load
36with a single row of rollers
364with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
F16C 19/52
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
19Bearings with rolling contact, for exclusively rotary movement
52with devices affected by abnormal or undesired conditions
F16C 33/36
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
33Parts of bearings; Special methods for making bearings or parts thereof
30Parts of ball or roller bearings
34Rollers; Needles
36with bearing-surfaces other than cylindrical, e.g. tapered; with grooves in the bearing surfaces
F16C 33/6696
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
33Parts of bearings; Special methods for making bearings or parts thereof
30Parts of ball or roller bearings
66Special parts or details in view of lubrication
6696with solids as lubricant, e.g. dry coatings, powder
Y10S 384/913
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
384Bearings
90Cooling or heating
913Metallic compounds
Applicants
  • THE TIMKEN COMPANY [US]/[US] (AllExceptUS)
  • DOLL, Gary, L. [US]/[US] (UsOnly)
  • EVANS, Ryan, D. [US]/[US] (UsOnly)
  • JOHNSON, Stephen, P. [US]/[US] (UsOnly)
Inventors
  • DOLL, Gary, L.
  • EVANS, Ryan, D.
  • JOHNSON, Stephen, P.
Agents
  • SOIFER, Jonathan, P.
Priority Data
60/663,22918.03.2005US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD OF PROTECTING ROLLING ELEMENT BEARINGS AGAINST OIL-OUT CONDITIONS AND BEARING MADE THEREBY
(FR) PROCEDE DE PROTECTION DE PALIERS DE ROULEMENTS A ROULEAUX CONTRE DES ETATS DE FUITE D'HUILE ET PALIER AINSI PRODUIT
Abstract
(EN)
A method of enhancing the operating life of roller bearings assemblies (B) subject to oil-out conditions is disclosed. The method comprises applying a tribological metal carbide reinforced amorphous hydrocarbon coating layer (16) over either the sliding surfaces (SS) or the rolling surfaces (RS) of the bearing assembly rolling elements (RE), but is preferably applied at least to the sliding surfaces of the rolling element. The coating has a thickness determined according to the equation: Formula (I), where d=coating thickness P=is the ratio of force applied to the rollers/contact area; n=the number of rollers; (t-t0)=the desired operating time after oil-out condition starts; and K' is the Archard constant.
(FR)
L'invention concerne un procédé permettant d'améliorer la durée de vie d'ensembles roulements à rouleaux (B) sujets à des états sans huile. Ce procédé consiste à appliquer une couche de revêtement (16) d'hydrocarbure amorphe renforcée par du carbure métallique tribologique sur les surfaces de glissement (SS) ou bien les surfaces de roulement (RS) des rouleaux (RE) du roulement à rouleaux mais, de préférence, au moins sur les surfaces de glissement du rouleau. Le revêtement a une épaisseur déterminée conforme à l'équation: formule (I) où d = épaisseur de revêtement, P= rapport de la force appliquée sur les rouleaux/zone de contact; n= nombre de rouleaux; t-t>0= temps de fonctionnement souhaité à partir de l'apparition d'un état sans huile; et K' est la constante Archard.
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