UM2 Bearing Filament Roller

Ball Bearing roller which fits Bridge Nylon (and larger spools)

3D printer parts and enhancements

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This spool roller was inspired by (and fits onto) this nice spool holder by


I wanted a ball bearing roller to fit this holder.  The bearings fit a bit tight, but I pulled them into the roller using the nuts.  You can adjust the model to fit other bearings if you need/want.

If there are questions about what parameters to adjust, please ask, but it is intended to be self explanatory.

Installation of bearings into the roller:
1) Place 1 fender washer onto the 1/4" bolt and let it slide against the hex nut
2) Place 1 bearing onto the 1/4" bolt and slide it against the fender washer.
3) Place the spool roller onto the bolt
4) Place the 2nd bearing onto the bolt
5) Place the 2nd fender washer onto the bolt
6) Screw one of the nyloc nuts onto the bolt
7) CAREFULLY tighten the nyloc nut, while ensuring that the bearings are pressing into the roller correctly (the bolt should hold them straight - make sure they are centering in the roller and not caught on an edge)  As you tighten the nut they will be pulled into the roller.
8) Remove the nyloc nut
9) Remove all parts from the bolt - the bearings should not come out of the roller
10) Place the bolt through the roller bearings and put one nyloc nut on.
11) Place one fender washer on the end of the bolt
12) Insert the bolt through Franks spool holder
13) Place the 2nd fender washer on the bolt
14) Place the 2nd nyloc nut on the bolt to secure the assembly into the spool holder
15) Mount the spool holder with nifty roller onto your Ultimaker 2 and enjoy

Thanks for reading,  suggestions are welcome

Materials and methods

measurements in inches:

2 - .250 x .625 x .4724 bearings (Crown Bolt 65628)
I used these bearings:

1 - 1/4" x 6" bolt

2 - 1/4" nylon lock nuts (nyloc)

2 - 1/4" fender washers



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51d182ced9e0d0efff5b4c72bddad7eb?default=blank&size=40maccew added this to the 3dprinter collection ago
B4da209a12de3776353e3523a46870ea?default=blank&size=40Mike28M added this to the UM2 collection ago
74637ddd9c05e8569750b756b7313729?default=blank&size=40Scherdin added this to the Um2+ collection ago
79844ca66e0285e05cf2c67cf68d91a6?default=blank&size=40Lgo added this to the ΓΆvrigt collection ago
923493e3bdd1530d4ae9909f093657a3?default=blank&size=40leadboss added this to the Things to print collection ago
Dbb743597ca91e38558532c3c38a4d04?default=blank&size=40Stuart Miles added this to the Stuff collection ago
946bb25549275900064f0b8862befb02?default=blank&size=40JimboJones published this design ago