Rolling bearing for high-speed rotating equipment
AssigneeJ. Morita Mfg. Corp.
InventorsAkira Matsui, Yoshinori Morita
Life of this patent
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Abstract
A rolling bearing for a high-speed rotating equipment is constructed of an outer ring, an inner ring, rolling elements and a retainer to rotatably support at least a rotary shaft thereon. The rolling elements are non-metallic inorganic balls. The retainer is composed of a molded porous synthetic resin body having a porous portion of a communicated structure in at least a part thereof. The rolling elements and the retainer are lubricated with a lubricating oil.
Claims13
A rolling bearing for a high speed rotating equipment, said rolling bearing being constructed of an outer ring, an inner ring, rolling elements and a retainer to retainably support at least a rotary shaft thereon, wherein:
- said rolling elements are non-metallic inorganic balls;
- said retainer is composed of a molded porous synthetic resin body having a porous portion of a communicated structure in at least a part thereof;
- said rolling elements and said retainer are lubricated with a nondrying lubricating oil;
- and
- wherein said lubricating oil comprises a nondrying vegetable oil, and said nondrying vegetable oil comprises;
- (i) at least 60 wt. % of at least one mono-unsaturated fatty acid containing one unsaturated bond per molecule;
- and
- (ii) at most 30 wt. % of at least one poly-unsaturated fatty acid containing at least two unsaturated bonds per molecule.
A rolling bearing for a high-speed rotating equipment, said rolling bearing being constructed of an outer ring, an inner ring, rolling elements and a retainer to retainably support at least a rotary shaft thereon, wherein:
- said rolling elements are non-metallic inorganic balls;
- said retainer is composed of a molded porous synthetic resin body having a porous portion of a communicated structure in at least a part thereof;
- said rolling elements and said retainer are lubricated with a nondrying lubricating oil;
- and
- said lubricating oil comprises a paraffin oil or a fluorinated oil.
Dependencies are inferred from the claim text.