Hydraulic Cylinder Rod is Stuck and Bend Due to the Hitting of Heavy Stone, Check How its repaired

I explain how to check the straightness of a hydraulic cylinder rod and calculate allowable runout. This is an essential task when repairing any hydraulic cylinder, because if a bent rod gets put back in, the life of the rod seal(s) is compromised and the cost of the repair largely wasted. I also explain that bent rods can, in many cases, be successfully straightened and reused. Provided they can be straightened to within the allowable tolerance. One of our members who works for a cylinder repair company, sent me his counter position on this: In our experience, straightened rods are never really straight. They almost always have an S curve in them after straightening has been attempted because they do not rebend in the same place they originally bent. Using these bent straightened rods greatly compromises the column strength of the cylinder, and is unsafe for a heavily loaded cylinder. It also wears unevenly on the gland and rod bearing, and frequently doesn t