Upgraded to 9mm wide belts

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groguard
Posts: 71
Joined: Wed Mar 19, 2014 4:01 am

Upgraded to 9mm wide belts

Post by groguard » Tue Sep 23, 2014 7:44 pm

Hey guys, its been a while since I've posted anything so I figured I would share this with you guys. I had a belt on my machine start to fray out on the edge a little bit, so I figured it was time to change out the belt just to make sure nothing could go wrong. In reality the belt was probably fine, and I was just being paranoid lol. I was looking around on ebay for some new belts, and I stumbled upon some 9mm wide GT2 belting. After seeing that I just had to have it, so I went on a mission to find all the parts to make it basically just a direct swap. I found a GT2 20T pulley for 9mm wide belts, and idlers that would take 9mm wide belts. I will post links at the bottom of this post. Now for the pictures!


Here are some picture of the setup. Comparing the belts
Image

Here is a picture of the new Idlers and pulleys.
Image

As for the belt clips, I just took a small file and widened the slot till the belts fit. Worked out nicely. I also placed a washer under the screw to lift the clip up to fit the belt better. Since these belts wont fit in the little slot in the rail.
Image

Picture showing the washer under the clip to make space for the belt
Image

Here is some purpleheart I cut recently, I cant really go into what the part is exactly but merely to show quality of work.
Image
and here is the links where I got the parts.
GT2 Pulleys for Nema 23 1/4" bore http://www.sdp-si.com/eStore/Catalog/Pa ... -020DF0908
From what I've seen they dont make GT2 20T 9mm belt width pulley for 5mm bore nema 17's, dont quote me on that.

Belting 9mm wide GT2
http://www.ebay.com/itm/231231300545?_t ... EBIDX%3AIT

Idler pulleys
http://openbuildspartstore.com/smooth-idler-pulley/
You're also going to want to get 30-35mm long m5 screws to account for the extra width on the idlers.

All in all, I think I've seen better cut quality(seems to be less play in the belts). It also seems to cut with a little more "authority". Some tests I have done show better cut quality at slightly deeper passes than before. Overall, I dont think everyone needs this, but it might be a good upgrade those with more powerful steppers on larger machines. Thanks for reading!
Shapeoko 2 #3920. Nema 23's. Belt drive Z axis, ACME rod upgrade,
1m rails on X and Y, X upgraded to 60x40 extrusion with openrail, Mid span supports,
DW660 with Super-Pid, IC's DW660 dust shoe.
Build Log

Gadgetman!
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Re: Upgraded to 9mm wide belts

Post by Gadgetman! » Sat Sep 27, 2014 8:41 pm

Did a bit of searching...

If we go for 3mm pitch GT2 belts instead of 2mm, and accept plastic(Nylon with Aluminium cores) pulleys...
http://www.sdp-si.com/eStore/Catalog/Pa ... M020DF0905
They have up to 15mm wide GT2(3mm pitch) belts. Unfortunately, no 5mm bore pulley for it.

Interesting store...

Liked the look of the posi-drive belts...
Would be just so cyberpunk if you gave them a squirt with a brass-coloured spray paint...
Or could be a nice base for model tank threads...

The ladder chains would look so awesome on the ShapeOko, but would probably not help accuracy all that much...

Definitely considering an upgrade.
Weird guy...
Shapeoko 2014F: 1000mm X/Y, 300W Quiet Cut spindle, Arduino Uno/G-shield and GRBL 0.9i
15x30 drag chains, custom spindle mount, 9mm belts, 8mm endplates, 6mm motor plates.

Gadgetman!
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Re: Upgraded to 9mm wide belts

Post by Gadgetman! » Thu Oct 02, 2014 3:06 pm

And here are 5mm bore 9mm wide GT2 pulleys suitable for NEMA17...

http://www.ebay.com/itm/Wide-GT2-Pulley ... 1303131521
Weird guy...
Shapeoko 2014F: 1000mm X/Y, 300W Quiet Cut spindle, Arduino Uno/G-shield and GRBL 0.9i
15x30 drag chains, custom spindle mount, 9mm belts, 8mm endplates, 6mm motor plates.

groguard
Posts: 71
Joined: Wed Mar 19, 2014 4:01 am

Re: Upgraded to 9mm wide belts

Post by groguard » Thu Oct 02, 2014 8:37 pm

Gadgetman! wrote:And here are 5mm bore 9mm wide GT2 pulleys suitable for NEMA17...

http://www.ebay.com/itm/Wide-GT2-Pulley ... 1303131521
Nice! Well, for those with 5mm bore steppers, now you can get 9mm wide belts as well.
Shapeoko 2 #3920. Nema 23's. Belt drive Z axis, ACME rod upgrade,
1m rails on X and Y, X upgraded to 60x40 extrusion with openrail, Mid span supports,
DW660 with Super-Pid, IC's DW660 dust shoe.
Build Log

Gadgetman!
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Re: Upgraded to 9mm wide belts

Post by Gadgetman! » Fri Oct 03, 2014 6:51 am

Yeah.

I just ordered a set of those, and a few meters of belts, for the next rebuild, myself.
Weird guy...
Shapeoko 2014F: 1000mm X/Y, 300W Quiet Cut spindle, Arduino Uno/G-shield and GRBL 0.9i
15x30 drag chains, custom spindle mount, 9mm belts, 8mm endplates, 6mm motor plates.

cvoinescu
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Re: Upgraded to 9mm wide belts

Post by cvoinescu » Fri Oct 03, 2014 9:08 pm

As a matter of principle, I would not buy from a company that spells it "Mendal". :) (That's the eBay seller for the 5 mm bore pulleys).
Proud owner of ShapeOko #709, eShapeOko #0, and of store.amberspyglass.co.uk

Gadgetman!
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Re: Upgraded to 9mm wide belts

Post by Gadgetman! » Fri Oct 03, 2014 9:35 pm

I've seen worse...

Usually by US eBayers or US fanfic writers...
Weird guy...
Shapeoko 2014F: 1000mm X/Y, 300W Quiet Cut spindle, Arduino Uno/G-shield and GRBL 0.9i
15x30 drag chains, custom spindle mount, 9mm belts, 8mm endplates, 6mm motor plates.

WillAdams
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Re: Upgraded to 9mm wide belts

Post by WillAdams » Sat Oct 04, 2014 9:26 pm

A recent Reddit post ( http://www.reddit.com/r/CNC/comments/2i ... ne/cl0cs9y )mentioned two additional belt options, so I added a small section to the Belts & Pulleys page.

Anyone have any experience w/ this sort of thing and want to comment on which belt is good why?

Belt Types

- MXL --- used on the original SO1
- GT2 --- used on the SO2
- T5
- HTD
Shapeoko 3XL #0006 w/Makita RT0701 Router w/0.125″ and ¼″ Elaire precision collets
Nomad 883 Pro #596 (bamboo)

Gadgetman!
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Re: Upgraded to 9mm wide belts

Post by Gadgetman! » Sat Oct 04, 2014 9:38 pm

Well... From my limited experience with my Prusa Mendel printer, T5 belts are just too stiff the relatively small diameter pulleys and idlers used in printers or home CnC machines.

Maybe if you used pulleys with double the diameter, or more...
Weird guy...
Shapeoko 2014F: 1000mm X/Y, 300W Quiet Cut spindle, Arduino Uno/G-shield and GRBL 0.9i
15x30 drag chains, custom spindle mount, 9mm belts, 8mm endplates, 6mm motor plates.

groguard
Posts: 71
Joined: Wed Mar 19, 2014 4:01 am

Re: Upgraded to 9mm wide belts

Post by groguard » Fri Oct 10, 2014 4:38 am

I can say that even cutting the purple heart wood, which is some pretty hard stuff, I've had no issues with slipping. I have about 10 hours of cut time on the new belts, and I have been really happy with the results. Being that the belts are wider, I would say that there is a more for the pulleys to grab making them less prone to slipping. I haven't crashed my machine into the end plates in a long time so I cant say at what point they do slip.
Shapeoko 2 #3920. Nema 23's. Belt drive Z axis, ACME rod upgrade,
1m rails on X and Y, X upgraded to 60x40 extrusion with openrail, Mid span supports,
DW660 with Super-Pid, IC's DW660 dust shoe.
Build Log

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