TC

"Tom Cavanagh"

11/05/2005 10:06 AM

More info on slowing belt/disc sander

This is a direct drive setup no drive belts involved. Rewiring it for 120
is a possibility but then it pulls 26amps and and it still turns at 3650
rpm.

Tom


This topic has 7 replies

t

in reply to "Tom Cavanagh" on 11/05/2005 10:06 AM

11/05/2005 12:01 PM

Tom Cavanagh wrote:
> This is a direct drive setup no drive belts involved. Rewiring it
for 120
> is a possibility but then it pulls 26amps and and it still turns at
3650
> rpm.
>
> Tom

If there's room around the machine, you can replace the motor with a
shaft and bearings, move the motor to a convenient place and drive the
new shaft with a belt and pulleys.

Replacing the motor with a 1750 rpm one would cost more but take less
effort. Since you're slowing the sander by half, you can get away with
reducing the motor power by half or more. (Your sanding material
removal rate will also drop, but I'm assuming you're not a production
shop.) This would save a few bucks on the motor and wiring.

Good luck,

Tim

WL

"Wilson Lamb"

in reply to "Tom Cavanagh" on 11/05/2005 10:06 AM

11/05/2005 8:49 PM

There's probably room on the motor shaft to mount a large pulley. Then use
another motor, with small pulley, to drive everything. In other words, use
the motor for a jackshaft. If you need to go fast again, just take off the
new belt.
Wilson
<[email protected]> wrote in message
news:[email protected]...
> Tom Cavanagh wrote:
>> This is a direct drive setup no drive belts involved. Rewiring it
> for 120
>> is a possibility but then it pulls 26amps and and it still turns at
> 3650
>> rpm.
>>
>> Tom
>
> If there's room around the machine, you can replace the motor with a
> shaft and bearings, move the motor to a convenient place and drive the
> new shaft with a belt and pulleys.
>
> Replacing the motor with a 1750 rpm one would cost more but take less
> effort. Since you're slowing the sander by half, you can get away with
> reducing the motor power by half or more. (Your sanding material
> removal rate will also drop, but I'm assuming you're not a production
> shop.) This would save a few bucks on the motor and wiring.
>
> Good luck,
>
> Tim
>

TC

"Tom Cavanagh"

in reply to "Tom Cavanagh" on 11/05/2005 10:06 AM

12/05/2005 11:17 AM

Thanks for all the thoughts but this is a dedicated machine and is built
that way. No way to add belts or pulleys. Just have to use a light hand I
guess.

Tom
"Wilson Lamb" <[email protected]> wrote in message
news:[email protected]...
> There's probably room on the motor shaft to mount a large pulley. Then
> use another motor, with small pulley, to drive everything. In other
> words, use the motor for a jackshaft. If you need to go fast again, just
> take off the new belt.
> Wilson
> <[email protected]> wrote in message
> news:[email protected]...
>> Tom Cavanagh wrote:
>>> This is a direct drive setup no drive belts involved. Rewiring it
>> for 120
>>> is a possibility but then it pulls 26amps and and it still turns at
>> 3650
>>> rpm.
>>>
>>> Tom
>>
>> If there's room around the machine, you can replace the motor with a
>> shaft and bearings, move the motor to a convenient place and drive the
>> new shaft with a belt and pulleys.
>>
>> Replacing the motor with a 1750 rpm one would cost more but take less
>> effort. Since you're slowing the sander by half, you can get away with
>> reducing the motor power by half or more. (Your sanding material
>> removal rate will also drop, but I'm assuming you're not a production
>> shop.) This would save a few bucks on the motor and wiring.
>>
>> Good luck,
>>
>> Tim
>>
>
>

Cc

"CW"

in reply to "Tom Cavanagh" on 11/05/2005 10:06 AM

15/05/2005 5:15 AM

Something really course would be best. More friction, slows the sander more.
:)

"Edwin Pawlowski" <[email protected]> wrote in message
news:[email protected]...
>
> "CW" <[email protected]> wrote in message
> news:[email protected]...
> > When you're sanding something, press hard. :)
>
> Great solution. The man is a genius ! ! ! Would it also help to use
worn
> sandpaper?
>
>

sD

[email protected] (Doug Miller)

in reply to "Tom Cavanagh" on 11/05/2005 10:06 AM

11/05/2005 2:45 PM

In article <[email protected]>, "Tom Cavanagh" <[email protected]> wrote:
>This is a direct drive setup no drive belts involved. Rewiring it for 120
>is a possibility but then it pulls 26amps and and it still turns at 3650
>rpm.

And burns up.

Sounds like you need to replace the motor.

--
Regards,
Doug Miller (alphageek at milmac dot com)

Nobody ever left footprints in the sands of time by sitting on his butt.
And who wants to leave buttprints in the sands of time?

Cc

"CW"

in reply to "Tom Cavanagh" on 11/05/2005 10:06 AM

14/05/2005 7:49 PM

When you're sanding something, press hard. :)
"Tom Cavanagh" <[email protected]> wrote in message
news:[email protected]...
> This is a direct drive setup no drive belts involved. Rewiring it for 120
> is a possibility but then it pulls 26amps and and it still turns at 3650
> rpm.
>
> Tom
>
>

EP

"Edwin Pawlowski"

in reply to "Tom Cavanagh" on 11/05/2005 10:06 AM

15/05/2005 1:46 AM


"CW" <[email protected]> wrote in message
news:[email protected]...
> When you're sanding something, press hard. :)

Great solution. The man is a genius ! ! ! Would it also help to use worn
sandpaper?


You’ve reached the end of replies