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Y Axis belt tensioner - No disassembly required

by blitz2190, published

Y Axis belt tensioner - No disassembly required by blitz2190 Apr 15, 2013

Description

I couldn't quite find a belt tensioner i liked that didn't rquire dissasembly so i made one I also included the cad files

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After download, the Axises seem to be off and I'm not sure how to change the original files as Sketchup wont open an igs file anyway to post a file to modify or change the axises?

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Instructions

used all sae parts easily found a lowes in the hardware aisle in the green machine screw boxes of hundred.

1 x 6-32 X 1-1/4"
1 x 6-32 machine nut - this i important to get the box of hundred with green label as these nuts are half the size of the ones in the bins

2 x 6-32 1/4"
1 x 608 skate bearing- found at any skate shop, usually also a ski or snow board shop

print one of each and assemble

loosen the nuts on the idler bearing slide between the fender washers and nuts(mine isn't beacuse i didn't have a belt guide at the time and liked a little play as it didnt bind) re-tighten nuts and tighten belt to liking
After download, the Axises seem to be off and I'm not sure how to change the original files as Sketchup wont open an igs file anyway to post a file to modify or change the axises?
I printed this thing.. Doesn't work as is. I'll try to fix it, as I like the idea.
The bearing shaft is not adequatly supported, and the bearing binds on the outer race.
i printed at .2 layer height 20% infill with .4 nozzle and it worked
awesome, i had planed to add another plate to cover the bearing but
found there was no need as it was a tight enough fit
there should be about .5 mm clearance around the bearing so the printer needs to be some what accurate as the closer i could get it the stronger it seemed to be
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