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US 9,309,922 B2Granted
Set of rolling bearings and corresponding rotary machine
AssigneeGE Energy Power Conversion Technology Limited
InventorsXavier Delepine, Yves Lacour
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AssigneeGE Energy Power Conversion Technology Limited
InventorsXavier Delepine, Yves Lacour
Estimating the term…
This set of roller bearings, which is a grounding bearing for a rotary machine, comprises a first-angular contact rolling bearing having a first outer race, a first inner race and first rolling elements, a second angular-contact rolling bearing having a second outer race, a second inner race and second rolling elements, a mount in which the first angular-contact rolling bearing and the second angular-contact rolling bearing are mounted. The first outer race and the second outer race are arranged in the mount either directly one beside the other or via the interposition of an intermediate member, the axial stiffness of which is greater than that of the mount and than those of the first and second outer races. Application for example to asynchronous motors.
A roller bearing set consisting of a bearing block for a rotating machine, the roller bearing set comprising:
An electric motor, comprising:
Dependencies are inferred from the claim text.
From the US filing history. Foreign family members aren’t listed.
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Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing: with two rolling bearings with angular contact
Elastic or yielding bearings or bearing supports, for exclusively rotary movement: ball or roller bearings, e.g. with resilient rolling bodies
Active magnetic bearings: with devices affected by abnormal, undesired or non-standard conditions such as shock-load, power outage, start-up or…
Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing: fixing them on the shaft or housing with interposition…
About 6 years 3 months of term left · ends 7 Feb 2033 (estimated)
Embodiments of the present invention relate to a set of roller bearing unit consisting of a bearing block for a rotating machine.
The following types of bearing sets are known to the art. These sets are, for example, mounted within an asynchronous motor, the rotor of which is housed within the main bearings, which are magnetic.
The bearing sets form secondary bearings, also termed gear chassis, which support the shaft in the event the primary bearing malfunctions.
The invention will be better understood upon reading the following description, provided solely as example, referring to the attached drawings, of which:
FIG. 1 is an axial cross-section of a motor according to an embodiment of the invention;
FIG. 2 is a larger-scaled view of detail II of FIG. 1, and
FIG. 1 shows an electric motor according to an embodiment of the present invention, designated by the general reference 2.
The electric motor 2 is an example of an asynchronous motor. The motor 2 is an example of a motor with a nominal speed greater than 6,000 RPM. The nominal speed is more particularly greater than 8,000 RPM.
The electric motor 2 comprises a housing 4 or shell, a shaft 6, a rotor 8, and a stator 10.