Circular saw, slightly oversized blade....

[UliKunkel]

Hello,

First real post here, so forgive if this topic has already come up (I did a search but didnt find anything)...

I have an 184mm circular saw (Skil) which is older (1865U1). Anyway I bought a 190mm blade for it by accident (and on sale so I can't return it). I mounted the blade and it turns fine without any issue, but I haven't had the courage to use it least it explode on me. Is there any issue with using this blade in my saw?

I don't have the manual, and on the saw there is no "maximum diameter" listed.

Thanks in advance!

 

[Diver Fred]

Provided the new blade isn't touching the blade cover at any point and also the blade has sufficient space to clear the saw dust away you ought to be OK. Just don't force the saw when cutting - particularly at maximum cutting depth.

 

[TheUnicorn]

My gut says that such a small difference would make no difference, especially as the guard still closes down without issue, my nagging concern would be that the outside is spinning just that little bit faster than it would be 3mm further in and that the machine isn't calibrated for that. I'm fairly confident that the added size and added speed of the edge would be within the tolerence of the machine though

 

[Bingy man]

Would cutting at 45 deg make any difference?

 

[Sideways]

If it spins freely, have at it.
A small percentage difference in diameter is entirely trivial. UK mains voltage varies by over 10% place to place and time to time, and so does the speed of (just about) every tool with a brush motor in the country except the few that have a tacho and constant speed under load electronics. I really don't see 3mm on the diameter as important so long as there's room for it.

 

[ChaiLatte]

I don't have the manual, and on the saw there is no "maximum diameter" listed.

The saw would likely have its rpm listed on its data plate. The blade would likely have a maximum rpm written on it.

If you think about it 190/184 is 3% extra. If a device is built in a way that it cannot cope with 3% variation without serious consequences, it is not built properly.