Will the dry coupling fit in the existing guard because Dry couplings are generally larger in diameter than gear couplings? Is windage a concern when retrofitting?
When establishing a retrofit criterion, it is important to include a dimensional check of the coupling guard. In addition, when the proposed dry coupling O.D. has a radial clearance of less than 1 inch (25 mm), windage calculations should be performed. The coupling vendors have developed computer programs to calculate the increase in guard temperature. It is also important when retrofitting to vent the guard giving the developed heat a place to exit.