Bending can occur (on vs. in) the middle frame during operation due to the high temperature of the furnace and [the?] axial strains. An excessive bending can cause the pallet car to be engaged with the underlying structure, (and increase vs. thereby increasing) the force required to rotate the conveyor.
The occur usually comes with "in", but here should I use "on" or "in"? I think, I saw "on" in a related document.
I also don't know to use "and increase" or "thereby increasing" in the second part. I think "and increase" doesn't coney that it is the result of the first sentence. if yes, then what is the structure for "thereby ...ing"? did I use it correctly?
And finally, I wrote "the force required to rotate the conveyor". I maybe could write it as "the required force for rotating the conveyor". are they different? which of these is better?
I yet don't know if "bending" is countable or uncountable or both and if I used the cases correctly!