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Help with Motor/Gearbox for Shredder

This topic contains 4 replies, has 2 voices, and was last updated by  Odhran 9 months ago.

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Odhran lickthebowl

Help with Motor/Gearbox for Shredder

16/12/2019 at 19:48

Hi,

I’m a student from Ireland and I’m trying to get started on building a shredder.

I was delighted to pick up this motor for a really cheap price.
It looks to be 3hp/2.2kw and ~1450rpm.
https://drive.google.com/file/d/14feXNU_BzVkCWRifBuT7PmASj37niRZa/view?usp=sharing
https://drive.google.com/file/d/14fvVhUVhNJROV1SBFm5l4tj9KuUpPvQV/view?usp=sharing
I thought it would be ideal and for 45euro (!) I couldn’t let it pass.. but it came without a gearbox and I’ve been having trouble finding one that will work with this motor.

I called a gearbox supplier in the UK and they told me I would not be able to connect one of their gearboxes (like this) to this type of motor, because it has no place to attach to on the front faceplate, ie. no screw holes (like this one)
and I would need to find another motor designed to be attached to a gearbox.

So, a few questions in case anyone with more knowledge can help:

Is there another type of gearbox I could look for that could work?
Would it be possible to modify my motor in order to connect a gearbox?
Is there another way I could reduce the speed, like a pulley system?
Am I missing something, or is it likely I’ll need to find another motor?

I’m open to any suggestions at this point, as I’m just getting started and still looking into the feasibility of different options!

Thanks for reading,
Odhran 🙂

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new
17/12/2019 at 00:26
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That’s awesome, thanks a mil!

warrior
17/12/2019 at 00:10
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@btmetz has a great design for a chain driven shredder https://davehakkens.nl/community/forums/topic/philippines-shredders-and-mods/ .

new
16/12/2019 at 23:41
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So potentially I could use a gearbox like that, (or similar with higher torque rating) as long as the mounting was really solid?

I do have access to a welder, so maybe that could work if I can find someone to help – my welding skills are pretty basic.

I haven’t looked into using chain and sprockets at all, so I’ll have to check it out.

Thanks for the suggestions!

warrior
16/12/2019 at 21:20
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Potentially you could mount them both to a strong base but the gearbox you linked seemed to have a low torque rating.

People have done chain and sprocket as an alternative as well

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