Originally Posted by jleonard
That would have been a last resort for me.
Most rollers are thin wall in the working zone as it is. I would not want to compromise that integrity. Plus not everyone (including me) has a 5/8 or 3/4 inch drill and drilling SS is not always easy especially while hanging over the bow.
I think a bushing is the correct repair. When the roller stops rolling, time for a re-grease or bushing replacement.
You and I think alike, the bushing adds tremendous strength to the roller while also adding stability and was a simpler fix than a new bolt and bigger holes. Adding the bushing took <5 minutes.
A bigger bolt would have worked, but there would be a lot of slop between the plastic bushing and the bigger bolt. With the stresses the anchor roller sees, I think slop would be a recipe for premature failure.
Regarding slop, the 1/2" NPT pipe has a .840" OD and pressed-in perfectly leaving what I would bet is a hermetic seal on between the outside of the pipe and the inside of the roller. The ID of the pipe left just enough room for a thin layer of grease between the pipe and the bolt shaft. When assembled, it works as smoothly and slop-free as any fine machine. No off-the-shelf bolt would ever fit that well in the point-eight-thirtysomething plastic bushing ID.