There are few events in life quite as thrilling as having your bandsaw throw a tire. And by thrilling, I mean terrifying! I flipped on my trusty porter cable 14″ saw and instead of a steady hum it had a terrible screech and roar. The top tire (rubber band that goes around the wheel and contacts the cutting band) split and set the blade loose. After 8 years of service, I guess it was time. The bottom tire was still in good shape, and that is where the motor is, so it still managed to drag the blade around inside the tool.
I feel like I switched it off pretty quickly, but I may have been in shock for a few seconds. The time that it did take me was enough for the wild blade to lurch forward and start cutting into the guard just above the top guide bearings. It cut through the metal guard and left a gash a few inches tall. Metal shavings were all over the tape top. The teeth are a heavy set tungsten carbide for ripping, so they are quite capable in soft metals. I did manage to chip a few teeth in the process.
Those blades are expensive enough that I was worried I would have to trash it. Luckily a few missing teeth out of 100 doesn’t appear to make that big of a deal. I opened everything up, pulled the blade out and ordered new parts. The top tire obviously needed replacing, and the new ones were a shiny blue! The bottom one looked worn and yellowed, so I replaced it too.
Last but not least I found the part number for the blade guard and ordered extras just in case. With the guards and throat plate replaced all was right with the world. The horrible screech was returned to its usual purr.