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Fully printable 608 roll bearing

by noreway, published

Fully printable 608 roll bearing by noreway Mar 1, 2013

Description

The heringbone gear bearings are hard to print in good quality and small sizes. Ball bearings are not fully printable because the balls will never be round. So i tried a roll bearing.

Print 8 bearings and a skateboard: thingiverse.com/thing:83738

Recent Comments

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This version has the little terrace on the inner race. Therefore axial forces gives a lot of abrasion. The second version (http://www.thingiverse.com/thi... has inner facets and takes more force in axial direction over the rolls. I uses 8 of them for my mini skateboard (http://www.thingiverse.com/thi... that hold 65kg in very careful usage.

For axial forces you maybe should also check the gear bearings (for 32mm inner hole spool: http://www.thingiverse.com/thi... by emmett.

How much force can this take along the axis of rotation? Could it hold up a kilogram filament spool?

Have a look at the second version with stronger edges.

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Instructions

**Assembly**

1. Print
I used a Printbot Plus with 0.35mm Nozzle and 0.2mm layer height.
2. Glue inner race
Maybe file or sand the inner hole before.
3. Assemble
Assemble every second roll inverted.
4. Glue outer race
Turn bearing around to ensure rolls are not glued to outer race.

Comments

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epicepee on Jan 15, 2014 said:

How much force can this take along the axis of rotation? Could it hold up a kilogram filament spool?

noreway on Jan 15, 2014 said:

This version has the little terrace on the inner race. Therefore axial forces gives a lot of abrasion. The second version (http://www.thingiverse.com/thi... has inner facets and takes more force in axial direction over the rolls. I uses 8 of them for my mini skateboard (http://www.thingiverse.com/thi... that hold 65kg in very careful usage.

For axial forces you maybe should also check the gear bearings (for 32mm inner hole spool: http://www.thingiverse.com/thi... by emmett.

Barz3 on Mar 30, 2013 said:

The edge seems really thin. Is there a reason for that, or is it just that way.

noreway on May 10, 2013 said:

Have a look at the second version with stronger edges.

noreway on May 4, 2013 said:

Hi Barz3

It's because I wanted to print the rolls as big as possible. If the bearings are pressed in a skateboard wheel, the edges are strong enought.

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