Yes, they can be used to punch the bearing out
Removing blind bearings on a Norco Optic. Are these notches used to punch out the bearing?
I was inspecting the suspension bearings on my Norco Optic, most of which are blind. If I ever need to remove them I have a slide hammer bearing extractor, but its very violent!
I noticed on the blind side there are 3 small notches in the frame that expose the bearing outer race. I'm curious, are they used to punch out the bearing?
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I noticed on the blind side there are 3 small notches in the frame that expose the bearing outer race. I'm curious, are they used to punch out the bearing?
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I agree with your preference to avoid hammers of any kind, when possible. The double-stacked bearings you pictured are not really in a "blind" situation because you can get to the back side of them. Therefore, you can use a bearing extraction press to remove them in a controlled manner, something like this:
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Both bearings come out the same side so the bearing the tool is pressing on will push out the other bearing. A bearing press in guide then replaces the small red extraction guide so that the outer race takes the pressure of being pressed in. As previously stated by HuckingKiwi, those notches are for using a punch to extract a stuck outer bearing race, should the bearing disintegrate during extraction.
If the bearings you pictured actually were "blind," your blind bearing puller would be a better choice for extraction than a punch and a hammer in my opinion--but it's not relevant since you can use a press tool.
Both bearings come out the same side so the bearing the tool is pressing on will push out the other bearing. A bearing press in guide then replaces the small red extraction guide so that the outer race takes the pressure of being pressed in. As previously stated by HuckingKiwi, those notches are for using a punch to extract a stuck outer bearing race, should the bearing disintegrate during extraction.
If the bearings you pictured actually were "blind," your blind bearing puller would be a better choice for extraction than a punch and a hammer in my opinion--but it's not relevant since you can use a press tool.
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