table saw blade wrong arbor size?

[Vaskerville]

How common is this?

I've never had a real table saw before. My Festool TS55 has handled pretty much all the cutting work for years now...

I just bought a new Bosch GTS10J (whatever it's called). Then I picked up a 60 tooth Diablo blade for nicer cuts. The problem is that the hole for the arbor is too small. I'm just curious how common this kind of problem is - and if I was stupid buying that blade or if I should have some kind of arbor conversion kit for the saw itself?

Note, I'm currently living in Haiti (I'm a US citizen though) and I sadly can't just run to Woodcraft and pick up whatever I need.

I can have the hole on the blade bored out - "by some guy near the prison" - that's how things work around here. I needed this blade yesterday though (which is why I bought it when I was on vacation 10 days ago). Oof...

 

[AlexThePalex]

There are a couple of common arbor sizes for saw blades. It is always important to make sure a blade has the correct arbor size before you buy it.

If it is too big you can get rings to fill it up to the right size. If the arbor's too small, it can be bored bigger, but that needs to be done with proper equipment to make sure the blade runs true. Not recommendable.

You are not stupid for buying this blade, just a mistake that won't happen again, I assume.

 

[Peter_C]

This is the table for Diablo blades.
http://www.diablotools.com//products?c=Saw_Blade&diameter=10%22_to_10-1%2F4%22&arbor=5%2F8%22

It is a 10 inch blade with a 5/8 inch arbor. I actually couldn't find a smaller arbor size from them, like a 1/2 inch.

For my slightly heavier Bosch 4100 table saw I went with a Freud Industrial blade today to try out. 

Edit: Desperate measures lead to desperate times. Let the guy bore it out and see what happens. Arbor run out is more important and shouldn't be affected. In other words warp, wobble, aka runout is a problem. A very slight up down movement of the blade might even be able to be adjusted out by moving the blade around. With the saw unplugged, turn the blade by hand with a piece of wood near it for reference.

 

[cblanton42]

Vaskerville,
    I have a set of Freud dado blades and one of the outside blades arbor hole is just a smidge smaller than the other one.  I can't get it to go onto my Bosch saw arbor unless I really rock it back and forth a lot, and I mean A LOT, and it's very difficult to remove.  The other one slides nicely and feels tight but normal, so my point is arbor holes can be slightly off even though they are the "correct" size and that may be your problem here.  I agree with Peter in your situation, try to get the arbor hole re-drilled and be careful!
Good luck,
CB     

 

[Cheese]

Your saw needs a blade with a 30 mm diameter arbor hole. If you look at the chart that Peter provided, Diablo doesn't even offer a blade with a 30 mm arbor hole, which means the blade you purchased probably has a 5/8" (15.88 mm) or 20 mm (.787") arbor hole.

However, the blade also has a hardened steel body and without proper carbide tooling, "the guy near the prison" will never be able to cleanly open up the arbor hole to 30 mm (1.18").

Why not just use the blade that came with the saw for now, return the Diablo blade and ask the store where you purchased the Diablo if they have any 30 mm arbor hole blades available.

In this age of internet, email and overnight delivery one or all of those options must be available in Haiti?  [smile]

 

[cblanton42]

Just to be clear on my advice, it was only if the hole is "slightly" off or too small like mine apparently was.  Like Cheese is saying I wouldn't even try to take it to a totally different bigger size,  just exchange it when you can if that is an option.

Good luck,
CB

 

[chris s]

It appears as if your saw is the metric/European version. Which takes the 30mm bore blade. You now have the same problem everyone with a Kapex has , you have to use metric blades.
  If you get the diablio blade bored let me know how you made out. I have been considering doing this for sometime now.
                                                                  Chris

 

[Birdhunter]

I would think that the slightest off center boring would result in extreme vibration. Vibration in a table saw can cause bad cuts and potentially jostle the cutoff into the blade. The advice to return the blade for one designed for your saw is very sound.

 

[Vaskerville]

Thanks for all the notes, guys.

Well, we found the guy near the prison and it's already bored. I'll try it out tommorrow and keep you posted.

I wish simple mailing things around was, simple, but this is Haiti and that would be un-Haitian.

Don't get me wrong, I feel lucky to live in countries like this. Before this I lived in Mauritania and before that Belgium...lol...

 

[Vaskerville]

Well, they did a good job boring out the blade. I'm happy and relieved everything went ok.

Thanks for all of the advice - lesson learned. Next time I'll know what to keep my eyes on.

Cheers!