Fallon
Super Member
Impact guns put out 200-500ft lbs of force. The aforementioned 200lbs of dude on a 3-5' breaker bar 600-1000ft lbs of force. A couple hundred lbs of force times a 20' long trailer is way more than that. Personally I dont want my trailer to get that good of a grip on my balls to unscrew them.Or you could put them on properly, with an impact wrench, and they'll never loosen up.
Ever.
Your choice.
As far as an amount of motion, weight & surface area, my hitch balls are about the same as the pins on my loader. Most manufacturers recomend greasing them every 8 hours. I've seen a few worn trailer hitch latches over the years, I dont want to have the potential for mine to become a statistic. Or even just deal with the squeeking.
I'd use silicon or teflon, but mine are mostly hitched & a bit dirty already. A bit of grease wont make them that much more disgusting.