Yeah, I've run into that exact issue a few times on different jobs. In my experience, a lot depends on the build quality and how they're specced for the job. Those cheaper ones tend to overheat pretty quick if you push them near constant operation, especially under heavy loads where heat builds up in the motor and screws. But the tougher industrial-grade ones, with better cooling and sturdier components like metal gears or roller screws, seem to manage way longer without much drama. I remember swapping in a model that handled around 2000 lbs push/pull without breaking a sweat, even on extended runs. If you're curious about solid options built for that kind of punishment,
high load actuators https://www.progressiveautomations.com/en-eu/pages/industrial-linear-actuators has some decent heavy-duty stuff worth peeking at—purely from what I've seen on sites like that, they focus on durability for machinery without all the fluff. Just my two cents, though; always test in your setup first.
