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Remove bearing cartridge on a Formula RX-142 hub

Bicycles Asked by MikeJansen on November 27, 2020

Bearibg cartridge from free hub side

I am trying to replace the free hub side bearing cartridge on this Formula RX-142 rear hub. It came stock on my 2018 Fuji Jari 1.7 and was not available after market and I can’t get docs on it.

Do I just push forcefully from the opposite side to force the cartridge out? I’m trying to avoid needing to buy a new hub and wheel set so I don’t want to damage the hub.

Update: here’s a better direct view
Better view

3 Answers

Ideally you'll need a blind bearing puller to extract the bearing, most decent bike shops should have one handy. There doesn't appear to be anything preventing removal of the bearing, so the indents are not for bearing extraction. If you're lucky you can get in from the back of the bearing and simply punch it out with a hammer and punch, as bearings are simply a press fit. The tooling indents are most likely for the freehub mechanism removal. You may have to remove the freehub if you choose to go with the hammer/punch technique; they're not always easy to undo, as most designs tighten under pedalling forces.

Correct answer by fryshaun on November 27, 2020

Based on the second photo, it looks like a threadded retainer ring of some sort.

Perhaps a park FR2 or similar would fit it ?

Image of FR2 tool

from https://www.parktool.com/product/freewheel-remover-fr-2

You might also be able to use some sort of 2-pin spanner to engage the slots and rotate it.

Answered by Criggie on November 27, 2020

Found a drawing of the hub.

Hope this helps. Hub

Answered by Michiel on November 27, 2020

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