Size of motor for 6" jointer

Alex Colic

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Jun 24, 2004, 10:28:26 PM6/24/04

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Hi,

I have a 6" jointer that needs a motor. The manual does not talk about the
horsepower required for the jointer but it does say that it needs to run at
about 4000 rpm. It states that I can take a motor that runs at 1725 and put
a 7" pulley on it to get the 4000 rpm.

I have a 1/4 horsepower motor running @ 1725 rpm lying around. Is it too
underpowered for this jointer?

Thanks

Alex

Tom

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Jun 24, 2004, 11:01:18 PM6/24/04

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Alex wrote:>Hi,

1/4 horse would be underpowered, especially if you aim to use the jointer's
full width capacity. Find a 1.5 or better with 110/220 V. Tom
Work at your leisure!

Greg O

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Jun 24, 2004, 11:22:26 PM6/24/04

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Jet and Delta use a 1 HP motor on their jointers.
Greg

bri...@thanks.com

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Jun 25, 2004, 12:42:06 AM6/25/04

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On Thu, 24 Jun 2004 22:28:26 -0400, "Alex Colic" <aco...@sympatico.ca>
wrote:

how old is your 1/4HP? if it's old enough to be repulsion/induction it
may well be enough. if it's more modern it will likely be too small.

I think if I had it and a 7" pulley just lying around I'd try it. if I
had to buy the pulley I'd probably just go buy a bigger motor.

Andy Dingley

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Jun 25, 2004, 6:48:24 AM6/25/04

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"Alex Colic" <aco...@sympatico.ca> wrote in message news:<45MCc.39604$MU4.1...@news20.bellglobal.com>...

> I have a 1/4 horsepower motor running @ 1725 rpm lying around. Is it too
> underpowered for this jointer?

1hp would be more like it, IMHO.

If I'm buying new motors (terrible practice, I know !) I find that
2hp are about the cheapest price break.

Wilson

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Jun 25, 2004, 9:10:49 AM6/25/04

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This is why we have Harbor Freight! You really need high power for face
planing, not much for edging.
Wilson

"Alex Colic" <aco...@sympatico.ca> wrote in message
news:45MCc.39604$MU4.1...@news20.bellglobal.com...

Tripper

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Jun 25, 2004, 10:31:56 AM6/25/04

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I have a 50's era 6" jointer with a 3/4hp powerkraft motor from the
same period. It works for full width but I have it set for a pretty
light cut which might make the difference, just under 1/32" if I
remember correctly. Balanced pulleys and a link belt really smoothed
it out and might transfer power better because I can push the stock
through a little faster now.

MT

bri...@thanks.com wrote in message news:<7d9nd09ppam7j8j66...@4ax.com>...

mike

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Jun 27, 2004, 6:14:06 PM6/27/04

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"Alex Colic" <aco...@sympatico.ca> wrote in message news:<45MCc.39604$MU4.1...@news20.bellglobal.com>...

Sounds like you have an old American Machine and Tool jointer. They
came with two pulleys, 7" for a1725 rpm motor and a 2" I think for
3450 rpm motor. Motor did not come with jointer. 1/2 hp will run this
jointer easily. Very good machine if it's a AMT. Most of their power
tools were of okay quality, jointer is much better than average
quality. When you need blades 5/8"x1/8"x6" standard cutters are
needed. Everyone sells this size.My jointer is over 30 years old and
still performs like a champ with a 1/2hp motor.
mike

danny

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Sep 6, 2021, 12:31:16 PM9/6/21

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I have a 6" jointer that is in need of a motor. I found a deal on a 2hp 3450 rpm motor. My jointer is old and very heavy cast iron. I cant find a brand or numbers. I'm wondering if this motor I'm looking at would be over powering it? I have 2 3/4" pulley for the motor and I'm not sure what size is on cutter head.

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