High failure rate? This particular spacecraft is 19 year old. There was a string of reaction wheel failures in the past that were tracked to a single supplier

High failure rate? This particular spacecraft is 19 year old. There was a string of reaction wheel failures in the past that were tracked to a single supplier (forgot exactly what the issue was, but I think it was some contaminant). Regardless, it's a device that has to continuously spin at high speeds, in space. It's actually remarkable that they survive for as long as they do.