Old Craftsman table saw motor died

	Old Craftsman table saw motor died

Home| Search | About

Lost Password?

Home Repair - - If it ain't broken, don't fix it. Otherwise look here.

Bookmark this page: YahooMyWeb

Yahoo!

Google

Windows Live

del.icio.us digg

digg

Netscape

Subject

Author

Date

Old Craftsman table saw motor died

Johnr24689

11-20-2006

Re: Old Craftsman table saw motor died

Ralph Mowery

11-20-2006

Re: Old Craftsman table saw motor died

baumgrenze

11-21-2006

Re: Old Craftsman table saw motor died

hallerb@aol.com

11-21-2006

Re: Old Craftsman table saw motor died

John Hines

11-21-2006

Re: Old Craftsman table saw motor died

John24689

11-27-2006

If you were Registered and logged in, you could reply and use other advanced thread options

Posted by on November 20, 2006, 11:05 pm

I have an old Craftsman table saw made in the 1940's and I tried to get
the old motor rebuilt. The man said it was too far gone. It is a 1/3
HP motor. I don't know how many RPM it is. The motor has a bracket
and it is connected to a pivot which allows the motor to hang off the
end of the wooden base the saw is bolted to. I feel as if I need to go
to a 1/2 HP motor, but I do not know what kind of motor to select. I
know I need a motor which has a bracket it I mount it back like the old
motor. Another problem is I do not know how many RPM's a table saw
motor should have. Any help would be appreciated as to the proper
motor and the RPM's. Thanks in advance.

Posted by Ralph Mowery on November 20, 2006, 11:17 pm

Did you look here ?
http://www3.sears.com/

>I have an old Craftsman table saw made in the 1940's and I tried to get

> the old motor rebuilt. The man said it was too far gone. It is a 1/3

> HP motor. I don't know how many RPM it is. The motor has a bracket

> and it is connected to a pivot which allows the motor to hang off the

> end of the wooden base the saw is bolted to. I feel as if I need to go

> to a 1/2 HP motor, but I do not know what kind of motor to select. I

> know I need a motor which has a bracket it I mount it back like the old

> motor. Another problem is I do not know how many RPM's a table saw

> motor should have. Any help would be appreciated as to the proper

> motor and the RPM's. Thanks in advance.

Posted by baumgrenze on November 21, 2006, 1:32 am

John:

Take a look at the diameter of the pulley on the motor and the pulley
on the saw arbor.

Commonly fractional horsepower electric motors are either a 1725 rpm or
a 3450 rpm motors.

The maximum arbor speed in rpm is a function of the blade diameter. The
larger the blade diameter, the faster (in feet/minute) the cutting rim
of the blade is running.

Here's a typical table. You can probably find more.

http://www.amanatool.com/instructions/DADOSETINST_ENG.pdf

MAXIMUM R.P.M. TABLE
Dado Set Maximum
Diameter R.P.M.
6" 9,500
8" 7,000
10" 5,700
12" 4,800

If the arbor pulley is 2x the diameter of the motor pulley, the arbor
will turn at 2x the rpm of the motor. Perhaps you can use logic to back
calculate the motor speed?

You say you know that it is a 1/3 HP motor. Is that all the information
you have on the nameplate?

Did you ask the motor rebuilder if he had any idea of the motor rpm? I
would think that someone skilled in the trade could deduce it from the
construction.

Good luck finding a replacement.

baumgrenze

Johnr24689@yahoo.com wrote:

> I have an old Craftsman table saw made in the 1940's and I tried to get