Rolling bearings

Abstract

This invention provides a rolling bearing equipped with a cage that offers enhanced shock resistance at low temperatures, enabling a longer service life and making it particularly useful for liquefied gas pumps. [Solution] The rolling bearing comprises at least an inner ring, an outer ring, rolling elements, and a cage, wherein the cage is made of a resin composition, and the resin composition must contain a thermosetting resin as a resin component, and may contain at least a portion of a reinforcing material, a solid lubricant, and various compounding agents as optional components, wherein the content of the reinforcing material is 80% by mass or less of the total amount of the resin composition, and the content of the solid lubricant is 80% by mass or less of the total amount of the resin composition (provided that the sum of the thermosetting resin, the reinforcing material, the solid lubricant, and the various compounding agents is 100% by mass based on the total amount of the resin composition). Furthermore, the rolling bearing is useful for liquefied gas pumps.

Claims

1. A rolling bearing comprising at least an inner ring, an outer ring, rolling elements and a cage, The retainer is made of a resin composition, The aforementioned resin composition contains a thermosetting resin as an essential resin component, As optional components, it may contain at least a portion of reinforcing materials, solid lubricants, and various compounding agents. A rolling bearing characterized in that the content of the reinforcing material is 80% by mass or less of the total amount of the resin composition, and the content of the solid lubricant is 80% by mass or less of the total amount of the resin composition (provided that the sum of the thermosetting resin, the reinforcing material, the solid lubricant, and the various compounding agents is 100% by mass based on the total amount of the resin composition).

2. The resin composition forming the retainer has a difference of 0.5 kJ / m between the Izod impact value at 25°C and the Izod impact value at -150°C. ２ The rolling bearing according to claim 1, which is as follows:

3. The rolling bearing according to claim 1, wherein the thermosetting resin is a phenolic resin.

4. A rolling bearing according to any one of claims 1 to 3, for use in a liquefied gas pump.

Images