Bearing press homemade for hubs

deaco...@gmail.com

unread,

Aug 3, 2015, 1:22:36 PM8/3/15

to

I have a set of Novatec hubs and would like to install some new Japanese ez bearings that are used for this hub. The bearings are a bit expensive to me at $21 but the specific tools they use are high. I really want to do this myself I just rather be self sufficient rather than take to the shop. I built the wheels I want to do all the service.

Am I going to be able to make my own press this cannot be that complicated and I only do it every 2-3 years. I have a YouTube video on how it is done but the have the bearing press and extractor tool. Anyone done this?

Deacon Mark Cleary

Lou Holtman

unread,

Aug 3, 2015, 2:07:24 PM8/3/15

to

Something like this I made to press in the BB cups

http://lh3.googleusercontent.com/-H4YcAZbzivk/U5wBxC1JBvI/AAAAAAAAFK0/VIl4jVvgI0s/s2048-no/IMG_2324-001.JPG
--
Lou

James

unread,

Aug 3, 2015, 5:00:16 PM8/3/15

to

On 04/08/15 03:22, deaco...@gmail.com wrote:
> I have a set of Novatec hubs and would like to install some new Japanese ez bearings that are used for this hub. The bearings are a bit expensive to me at $21 but the specific tools they use are high. I really want to do this myself I just rather be self sufficient rather than take to the shop. I built the wheels I want to do all the service.
>
> Am I going to be able to make my own press this cannot be that complicated and I only do it every 2-3 years. I have a YouTube video on how it is done but the have the bearing press and extractor tool. Anyone done this?
>

Not on those particular hubs, but I have replaced the cartridge bearings
on a few different hubs. Usually a long pin punch and light hammer can
be used to drift the old bearings out. When putting new bearings in,
you must be sure only to tap the bearing outer race back in to the hub
shell. If you hit the inner race or seal, you'll damage it. Be gentle
and try to keep the bearing straight so that the hub shell isn't damaged.

--
JS

avag...@gmail.com

unread,

Aug 3, 2015, 7:32:49 PM8/3/15

to

A SNAP...

look thru the hub with a strong light alongside...are you seeing the inner ID cartridge ring above the hub axle diameter ? possible to file a piece of steel strap to fit thru hub onto inner ID bearing...right. Take a haclsaw and lop off a rough cut circle segment then using a frsh file and vise long sorke the steel down to two circle segments on the hub hole diameter.

Heat the hub outside the bearing with a heat gun or stove head...like a propane coleman..WATCH OUT FOR THE GREASE OUT...

As you move toward setting the hub so the new strap tool can be tapped on with a punch n hammer...the cartridge will fall out

getting the new bearing in....chill bearing...heat hub...apply a very light synthetic grease on the hub with a spatula or water color brush see Walmart..not a wad just a brush...place bearing EVENLY onto the hub...you will blow this one ...the bearing will sit there canted in the hub snearing at you the clod.

Once even in the bearing should press smoothly with lou's tool. We all have Lou's tool on the shelf...its de riguer

heat and chill...make strap tool...borrow a heat gun

AMuzi

unread,

Aug 4, 2015, 8:16:07 AM8/4/15

to

Not different from any similar bearing on an electric motor
or drone or what have you. Knocking out the old ones is
trivial usually but press the new ones evenly with your tool
or fixture on the outside case only.

--
Andrew Muzi
<www.yellowjersey.org/>
Open every day since 1 April, 1971

Peter Howard

unread,

Aug 4, 2015, 9:32:56 AM8/4/15

to

For me, it's always helped to put the bearing in the freezer for an
hour. Then warm the hub shell a bit with an electric hot air gun before
taking the bearing out of the freezer. The bearing practically falls in
by itself.
PH