Does Drifter's junk cube have a lock-on mechanic? Also what exactly are the ranges of Drifter's junk cube and both of Operator's specials?

I've noticed that the junk cube basically doesn't work when you're not targeting any enemy in the air and instead only slides across the ground. Also, after a couple of runs with both of them, I still haven't figured out the exact ranges of Drifter's junk cube or of Operator's specials.