Singer sewing machine motor.

[vintagengineerParticipant @vintagengineer]

Anyone know what speed Singer motors run at flat out? I was thinking of using one for a toolpost grinder?

[vintagengineerParticipant @vintagengineer]

[Michael GilliganParticipant @michaelgilligan61133]

Something in the region of 6,000 rpm

MichaelG.

[John HinkleyParticipant @johnhinkley26699]

Not Singer, but …….

For what it's worth, this generic sewing machine motor that powers my toolpost grinder/drill is rated at 90w and the blurb that came with it claimed up to 10,000rpm! I've no way to check that, but it does whizz round at a considerable rate of knots at full chat.

My 2d.

John

[Andrew Moyes 1Participant @andrewmoyes1]

The Potts toolpost spindle shown in my album has a sewing machine motor that runs at 9000 rpm on light load.

Andrew M

[Les Jones 1Participant @lesjones1]

daveb,
I can't work out what your post has to do with this thread, Can you explain ?

Les.

[Michael GilliganParticipant @michaelgilligan61133]

Les [and daveb] … I have already 'reported' daveb's post as presumably mis-located.

Hopefully a Moderator will move it to a more appropriate thread, and we can keep this one for Sewing Machine Motors.

MichaelG.

[duncan webster 1Participant @duncanwebster1]

I suspect sewing machine motors are series wound. If so they are not ideal for driving grinding wheels as if you arrange the belt to give a safe speed unloaded it will slow down markedly as soon as you put any load on it. Better to use an induction motor. I recovered one from a dishwasher pump, quite small, ran at ~2800 rpm, and effectively free, just needed some new bearings and a new shaft to accommodate the drive pulley.

[Bob McParticipant @bobmc91481]

Hi all….

Another 'for what its worth'…

I used a singer sewing machine motor to power a small filing machine I made using a 2 stroke crankcase … it has enough power to file an 1/2" piece of mild steel but I wouldn't like to try it on anything thicker, after saying that, the poor thing has to move a piston up and down and blow out any air in the cylinder as well..!

Bob Mc.

[Neil WyattModerator @neilwyatt]

Posted by Bob Mc on 29/01/2017 14:29:14:

Hi all….

Another 'for what its worth'…

I used a singer sewing machine motor to power a small filing machine I made using a 2 stroke crankcase … it has enough power to file an 1/2" piece of mild steel but I wouldn't like to try it on anything thicker, after saying that, the poor thing has to move a piston up and down and blow out any air in the cylinder as well..!

Bob Mc.

'Built in swarf & dust clearing mechanism'

[mechman48Participant @mechman48]

'Built in swarf & dust clearing mechanism'

​+1, My thoughts precisely… Just add a small nylon pipe to the discharge port.

​George.

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