While the Jackscrew could be at fault, I'm not convinced it is.
I have a fair bit of experience of them in the manufacturing industry. They work in continuous high speed, high load applications for a decade or more without issue.
When they do fail it usually begins by developing endplay. If that symptom is ignored, they fail by sizing up solid (no amount of force will get them to move) because the balls become wedged in the return tube.
They do not strip and there is no warning,.