Rolling bearing for refrigerant compressor
AssigneeAktiebolaget Skf
InventorsHans Wallin, Rudolf Hauleitner, Guillermo Enrique Morales Espejel
Life of this patent
Estimating the term…
Abstract
A rolling bearing having an inner raceway and an outer raceway and a plurality of rolling elements arranged therebetween. The rolling bearing is media-lubricated or oil-free lubricated. The lubricant forms an elasto-hydrodynamic lubricant film between the rolling elements and the raceways. At first use of the rolling bearing, at least one surface of the rolling bearing is coated with a protective fluid, preferably an oil-based preservative fluid. Also, a refrigerant compressor having such a rolling bearing.
Claims20
A rolling bearing comprising:
- an inner raceway,
- an outer raceway, and
- a plurality of rolling elements arranged therebetween, wherein the rolling bearing is media-lubricated or oil-free lubricated, wherein
- the lubricant forms an elasto-hydrodynamic lubricant film between the rolling elements and the raceways, wherein
- at first use of the rolling bearing, at least one surface of the rolling bearing is coated with a protective fluid, and
- wherein the protective fluid is a polar substrate with polar heads and non-polar tails, and wherein the polar heads are adapted to bond to the bearing surface and the non-polar tails prevent elements to come into contact with the bearing surface.
A rolling bearing comprising:
- an inner raceway,
- an outer raceway, and
- a plurality of rolling elements arranged therebetween, wherein the rolling bearing is media-lubricated or oil-free lubricated,
- wherein the lubricant forms an elasto-hydrodynamic lubricant film between the rolling elements and the raceways,
- wherein at first use of the rolling bearing, at least one surface of the rolling bearing is coated with a protective fluid, and
- wherein at least one raceway is made from a hardened corrosion-resistant steel, having a corrosion resistance with a pitting potential of at least 25 mV higher than the stainless steel reference (AISI 440C) according to ASTM G61-86.
A media lubricated machine comprising at least one rolling bearing:
- an inner raceway,
- an outer raceway, and
- a plurality of rolling elements arranged therebetween, wherein the rolling bearing is media-lubricated or oil-free lubricated, wherein
- the lubricant forms an elasto-hydrodynamic lubricant film between the rolling elements and the raceways, and wherein
- at first use of the rolling bearing, at least one surface of the rolling bearing is coated with a protective fluid and
- wherein the protective fluid is a polar substrate with polar heads and non-polar tails, and wherein the polar heads are adapted to bond to the bearing surface and the non-polar tails prevent elements to come into contact with the bearing surface.
Dependencies are inferred from the claim text.