|Forum topic by Stewbot||posted 06-08-2015 11:38 AM||838 views||0 times favorited||4 replies|
06-08-2015 11:38 AM
2 days ago I received my grizzly go555lx and assembled it that night. Shipment had no visible damage to the box, nor did any of the contents inside. It’s a 14” 1hp with cast iron wheels, mounted on immobile base. I’ve removed the supplied rubber feet and have it sitting on 2×6 skids.
I set the saw up as instructed in the manual, checked for wheel allignment, coplanar, blade tracking, guide bearings etc. and when I turned the saw on I had less than desirable results, however not horrible results either. One issue was with table vibration, and the main and more troubling issue was that the saw vibrated violently about 3/4 of the way through its shut down process.
After speaking with grizzly tech support on Friday Ive spend the whole weekend working on the saw and trying to isolate this problem. At this point I have: checked blade tension, tracking, bearing positions, checked blade for poor welds and over all shape (despite it being a low quality blade, does not appear to be malfunctioned), coplanar, allignment, belt tension, pulley allignment, bolt and nuts for tight, proper motor mount, secure stand etc. I’ve gone over everything to my knowledge and have discovered these findings thus far.
I removed the blade and ran the saw with just the bottom wheel and it seemed to have the same issues as stated, but less magnified. I tested the bottom wheel for balance using the bottom wheel shaft as my mounting point. I have determined that my bottom wheel does appear to be unbalanced (assuming I can use the saw the way I did to accurately check). I marked it its heavy point, tested it multiple times and it always drops to the same spot (Have not checked top wheel). I have run the motor by itself and some vibration seems to occur, but not enough to make me believe the motor is at fault. With that said, I thought I figured out the issue, and began bragging to my girlfriend about how clever I am and figuring it to be an unbalanced bottom wheel. I tried to balance it myself by wrapping electrical tape several time around tops of opposite spokes. Using the same method to check for balance, it appeared I had succeeded however when I set it all back up I still seem to get a really bad wobble during the shut down process.
I have also noticed that there is a little bit of play from side to side between the lower wheel and the shaft, but I believe I alleviated this when I tightened the belt. But still the same results.
As of right now I am having my best results, but the over-all issue is still apparent. I have tightened the belt by moving the motor back a bit, (but still believe I have enough play as followed by manual), aligned the pulleys to the best of my abilities ( only by eye, BUT done so with a carpenters eye) ‘balanced’ the lower wheel, and secured the saw to the stand and the stand itself (all level) as best I can short of bolting it to the ground. My results thus far are that sometimes I can balance a nickel on the table for minutes at a time, and sometimes only a few seconds, but always end up with a pretty substantial amount of vibrations during shut down. It basically feels like the wheels are wobbling really bad and are looking for some other place to go, which then runs through the machine and then stops once a certain speed is hit. I do not have a method of measuring accurately the wheels other than checking for balance.
At this point I will go ahead and speak with grizzly tech regarding my findings, but also wanted to get anyones thoughts on this situation regarding trouble shooting, and also whether or not this issue is even that problematic in regards to bandsaws of this nature (price point, quality etc.). I was hoping to hear from anyone with the same saw and hear whether this sounds like a common issue or not and lastly being that the saw is so new, whether this amount of vibration warrants a possible return, or is minor enough to where I’m better off keeping it and living with it. I’m not trying to be picky or obsessive about this issue, but at the same time $550 is a lot of money to me at this stage in my life, and my shop is going to cost a lot more to set up. If this were a common issue for these saws, then it would not bother me, but it’s hard to live with this issue if I were to know that it is not a common problem with these saws. And lastly, I like the grizzly company, I’m really hoping to figure this out because I want to trust the grizzly brand, because is was in fact going to look into more of their tools for my shop. Anyway, I’m sorry for the long post but really Any help or input would be greatly appreciated….this little bandsaw riddle sure is getting the better of me right now.
-- Hoopty scoop?