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Author Topic: Sprocket Metric to English  (Read 1528 times)

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Offline robotcoderTopic starter

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Sprocket Metric to English
« on: August 30, 2009, 09:44:03 AM »
I want to attach a #35 Pitch sprocket like this
https://www.surpluscenter.com/item.asp?UID=2009082523225799&item=1-2413-24-B&catname=
to the shaft of this motor
http://www.robotmarketplace.com/products/ML-3506.html

The problem is I cannot find a #35 Pitch 8mm bore sprocket anywhere.  Any ideas or sites to find metric sprockets?

Offline blackbeard

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Re: Sprocket Metric to English
« Reply #1 on: August 30, 2009, 06:23:54 PM »
what if you get one that's slightly smaller and drill it?
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Offline Joker94

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Re: Sprocket Metric to English
« Reply #2 on: August 30, 2009, 06:59:04 PM »
You might be able to drill it, do you have access to a mill as that would make it really easy, and you may even be able to mill your own sproket(maybe just buy it as it would be more accurate).

Offline matt liao

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Re: Sprocket Metric to English
« Reply #3 on: August 30, 2009, 11:56:45 PM »
you can make a tanstion connector to connect your motor shaft and sprocket.

Offline ArcMan

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Re: Sprocket Metric to English
« Reply #4 on: September 01, 2009, 10:56:19 AM »
I had a very similar problem as yours.  I'm assuming you've checked for off-the-shelf sprockets at McMaster et. al.
I went to Maryland Metric.
www.mdmetric.com
They will bore any sprocket to any shaft bore.  If you need, they will cut a keyway and tap for set screws as well.  I had sprockets made for about $35 apiece.

BTW, their web site blows.  But in the end I got a perfectly machined sprocket that fit perfectly.

Also, I found a couple of 8mm bore #35 roller chain sprockets at Stock Drive www.sdp-si.com.  But they're acetal resin (not steel) and there's only a couple of sizes.  It might work for you, though.
« Last Edit: September 01, 2009, 11:07:01 AM by ArcMan »

Offline robotcoderTopic starter

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Re: Sprocket Metric to English
« Reply #5 on: September 01, 2009, 11:35:58 AM »
Thanks, I will take a look at those sites.

 


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