What usually gives away a hydraulic breaker that's built to last?
I've been talking with a few people at work about hydraulic breakers, and one thing that keeps coming up is that two units can look very similar on paper but end up aging very differently in the field. Out of curiosity, I started digging through manufacturer information including alibaba to compare how different models are put together, but it's still hard to tell what actually translates into a longer service life.
For those who've rebuilt or maintained a lot of these, what are the first things you look at when judging whether a breaker is likely to hold up? Are there certain design details, that you've learned to pay attention to over the years?