Mcmaster pulley

Probably a common question but the search is not helping me find the answer. Does anyone have a part number for an X axis pulley from Mcmaster to fit a NEMA 17? I've got a bad pulley and now I can't print a new one.
Thanks Scott

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Camblonie
Repstrap -> Prusa
RAMPS 1.3, Merlin
3mm J-Head Nozzle

camblonie, it's not McMaster, but Ebay has a couple of pulley suppliers.

The ones there are T5, but if you're using XL belt, they would work well enough for you to print a new XL gear.

SDP-SI is a good USA source for small Inch/Metric drive parts. They don't have any exact matches, but there may be something you can make work:

"A 6M35M012DF1005" T5 pulley, 12 tooth, 5mm bore, 10mm wide, plastic
"A 6A35M010DF1004" T5 pulley, 10 tooth, 4mm bore, 10mm wide, aluminum

"A 6Z 3M10DF09505" XL pulley, 10 tooth, 5mm bore, 9.5mm wide, plastic w aluminum insert

I'm seriously doubting you'll find an 8 tooth option from an industrial source, as that's rather smaller than the minimum bend radius for the belt.

Alternatively, you can buy some printed T5 pulleys from MakerGear.

raldrich Wrote:
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> The ones there are T5, but if you're using XL
> belt, they would work well enough for you to print
> a new XL gear.

Probably not actually, as they will introduce significant backlash.
If you have XL belts, part # 57105K11 at mcmaster will work, though you will need to drill out the bore with a 5mm drill. Same goes for the SDP-SI pulleys. I don't think you can find XL pulleys with a 5mm bore.

BTW I have the XL pulleys from SDP-SI that KSevcik listed. They work great.

NewPerfection Wrote:
> I don't think you can find XL pulleys
> with a 5mm bore.
>
> BTW I have the XL pulleys from SDP-SI that KSevcik
> listed. They work great.

Wait, it seems like KSevcik just listed a part number for an XL pulley with a 5mm bore... unless im missing something.... here is the link to part number "A 6Z 3M10DF09505" [sdp-si.com]

Wouldn't those be perfect? Are those the ones you have that work great?

daufhammer Wrote:
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> Wait, it seems like KSevcik just listed a part
> number for an XL pulley with a 5mm bore... unless
> im missing something.... here is the link to part
> number "A 6Z 3M10DF09505"
> [sdp-si.com]
> oup&PartID=29463&GroupID=347
>
> Wouldn't those be perfect? Are those the ones you
> have that work great?

Those would be perfect actually. I misread his post, the ones I got had a 3/16" bore. I somehow missed that they have XL pulleys with 5mm bores. The ones I have appear to be identical with the exception of the bore, and yeah they do work great.

Nice! I think i'm going to order a few of those! Good find KSevcik!