Rolling bearing retainer and method for manufacturing such retainer
US-9771980-B2 · Sep 26, 2017 · US
US12320388B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12320388-B2 |
| Application number | US-202218548956-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 27, 2022 |
| Priority date | Mar 2, 2021 |
| Publication date | Jun 3, 2025 |
| Grant date | Jun 3, 2025 |
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A ball bearing for the scroll of a scroll compressor, having an outer race, an inner race and a plurality of balls disposed therebetween, characterized in that the balls are held and guided in a ball bearing cage, wherein the ball bearing cage is formed as an externally guided plastic cage with a reinforcing structure made of metal as a hybrid cage.
Opening claim text (preview).
The invention claimed is: 1. A ball bearing for the scroll of a scroll compressor, comprising an outer race, an inner race, and a plurality of balls disposed therebetween, wherein the balls are held and guided in a ball bearing cage, wherein the ball bearing cage is formed as an externally guided plastic cage with a reinforcing structure made of metal as a hybrid cage, wherein the reinforcing structure is formed as a circumferentially shaped ring with an H-profile, and wherein the H-profile has two parallel lateral flanks, which are connected to each other by a central web, a first one of the lateral flanks is inside the plastic cage and a second one of the lateral flanks is outside the plastic cage. 2. The ball bearing according to claim 1 , wherein the reinforcing structure is an insert in the plastic cage of the ball bearing cage for reinforcing a web area. 3. The ball bearing according to claim 1 , wherein the ball bearing cage is formed from polyamide-imide. 4. The ball bearing according to claim 1 , wherein the ball bearing cage is formed from polyether ether ketone. 5. The ball bearing according to claim 1 , wherein the ball bearing cage is formed from phenolic resin with meshed cotton fabric. 6. A ball bearing for the scroll of a scroll compressor, comprising an outer race, an inner race, and a plurality of balls disposed therebetween, wherein the balls are held and guided in a ball bearing cage, wherein the ball bearing cage is formed as an externally guided plastic cage with a reinforcing structure made of metal as a hybrid cage, wherein the reinforcing structure is formed as a circumferentially shaped ring with an X-profile, and wherein the X-profile is completely surrounded by the plastic cage.
Imides, e.g. polyimide [PI], polyetherimide [PEI] (F16C2208/58 takes precedence) · CPC title
Engines or pumps · CPC title
Phenolic resin · CPC title
Polyamideimide [PAI] (F16C2208/58 takes precedence) · CPC title
Polyarylene ether ketones [PAEK], e.g. PEK, PEEK (F16C2208/58 takes precedence) · CPC title
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