5/8" ball bearing arbor RHT

I bought a saw kit about 5 years ago, after many years of rookie abuse, and many broken/worn off diamond blades. I just cut into a rock harder than jade! and it was smoking, it broke the weld behind the arbor washer where it is welded to the shaft. I have been treating this saw to abuse for years, and didn't think an arbor that small could handle it. well it took many years of abuse from me! and only now while I was not attending the saw it had a rock hard as diamonds itself, it finally couldn't take it any more. moral of this story, do not under estimate it's ability to do it's job!