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post #1 of 8 (permalink) Old 10-25-2009, 10:32 AM Thread Starter
 
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Hi Folks,

I've been looking at several portable 10 inch table saws. Some motors are listed at 3600 rpms others at 4000 rpms and another at 5000 rpms. Should I be concerned with this spec? They are all 15 amp 10 inch table saws. Brands like Ridgid, Bosch, Dewalt and Sears.

Thanks in advance.

Burt
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post #2 of 8 (permalink) Old 10-25-2009, 11:27 AM
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The Bosch 4100DG-09 is one of the best portables, but is a little pricy for a portable. The Ryobi BTS21 is the best bang for the dollar. I look at power more than the RPM. Time is money, you want a saw that isn't going to bog when ripping a 2x. If you are planing on taking this saw on job sites, you don't want a high end saw. Better to be out $250 than $800. 3600 seems a little slow, but I have never used one that slow so I can't really say.

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post #3 of 8 (permalink) Old 10-25-2009, 11:54 AM
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Welcome to the RouterForums Burt.




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post #4 of 8 (permalink) Old 10-25-2009, 12:18 PM
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The RPM may be related to the motors torque rating, which rarely if ever gets a mention in the specs.

My 10" Delta cab saw is 3400 something rpm where my portable Mak is 4600 something rpm.

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post #5 of 8 (permalink) Old 10-25-2009, 01:59 PM
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The slower the speed, the rougher the cut will look.

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post #6 of 8 (permalink) Old 10-25-2009, 02:48 PM
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Greetings and welcome to the router forum.

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post #7 of 8 (permalink) Old 10-27-2009, 08:14 AM
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Hi Burt. Welcome to the group. RPM ratings are sometimes given for the motor and a separate spec for the blade. The blade speed for many table saws is ~4200RPM. You may be able to download user's manuals for the saws in question from the manufacturers' websites to verify this.
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post #8 of 8 (permalink) Old 10-27-2009, 08:20 AM
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The motor rpm can be anything. Different sized pulleys are used to get the blade speed.

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