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YouU Crank Bearing 5/16" Ball Size x 7/9/12 Balls for Bicycle Crank Bike Crank Bikes Beach Cruiser limos Stretch Bicycles (5/16''x7/2pcs)
Alta Bike Bottom Bracket Set, Multiple Colors and Sizes (Chrome, Ball Retainer: 5/16 x 9)
BMX Bike Ball Bearing CAGE CRANKSHAFT Bottom Bracket 5/16" x 9 CRANKSET CHAINSET
Lowrider 2-3 Piece Crank Bearings 1/4" Ball Size x 9 Balls. Set of Bearing. Pair of Bearings. for Bicycle Crank, Bike Crank, Bikes, Beach Cruiser, limos, Stretch Bicycles.
cyclingcolors Bike Ball Bearing CAGE CRANKSHAFT Bottom Bracket 1/4" CRANKSET CHAINSET 7 BMX
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YouU Crank Bearing 5/16" Ball Size x 7/9/12 Balls for Bicycle
Alta Bike Bottom Bracket Set
Cyclingcolors BMX Bike Ball Bearing CAGE CRANKSHAFT 5/16" x 9
Lowrider 2-3 Piece Crank Bearings 1/4" Ball Size x 9 Balls
Cyclingcolors Bike Ball Bearing CAGE CRANKSHAFT Bottom Bracket 1/4"
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YouU Crank Bearing 5/16" Ball Size x 7/9/12 Balls for Bicycle Crank Bike Crank Bikes Beach Cruiser limos Stretch Bicycles (5/16''x7/2pcs)
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YouU Crank Bearing 5/16" Ball Size x 7/9/12 Balls for Bicycle
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Alta Bike Bottom Bracket Set, Multiple Colors and Sizes (Chrome, Ball Retainer: 5/16 x 9)
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BMX Bike Ball Bearing CAGE CRANKSHAFT Bottom Bracket 5/16" x 9 CRANKSET CHAINSET
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Cyclingcolors BMX Bike Ball Bearing CAGE CRANKSHAFT 5/16" x 9
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Lowrider 2-3 Piece Crank Bearings 1/4" Ball Size x 9 Balls. Set of Bearing. Pair of Bearings. for Bicycle Crank, Bike Crank, Bikes, Beach Cruiser, limos, Stretch Bicycles.
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Lowrider 2-3 Piece Crank Bearings 1/4" Ball Size x 9 Balls
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cyclingcolors Bike Ball Bearing CAGE CRANKSHAFT Bottom Bracket 1/4" CRANKSET CHAINSET 7 BMX
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Cyclingcolors Bike Ball Bearing CAGE CRANKSHAFT Bottom Bracket 1/4"
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Replacing Bearings In A Bottom Bracket

maybe yours project birthday is continue
to work on this Trek a 50 mountain bike
and I replace the chain and I was
looking at the bottom bracket as opposed
to being stiff which a lot of bottom
brackets that are kind of messed up old
they tend to be stiff then but this is
actually loose so I can go ahead and
wiggle the cranks so there’s a bunch of
play in there and that could be because
of like worn bearings it could be simply
just out of adjustment but it could be
damage in there but I’m gonna go ahead
and open it up clean it out replace the
bearings and just make sure everything’s
okay in there so that’s my project for
today so first thing I do is pop off the
cranks so get a little dust cover here
so I’ll pop that off just pry that out
with a little screwdriver and a little
bit of rust in there a big deal and I
got a 14 millimeter socket here go ahead
and loosen this guy
and now I’ve got a crank puller here and
I’ve got a couple of videos on removing
cranks so go ahead and click the link on
the screen now take you to one of my
videos having to do with moving cranks
bunch of a dirt and dust in there so I’m
gonna go ahead and pull this guy off
okay the threads in here where the crank
puller will go ahead and engage or kind
of messed up a little bit so I’m going
to use a tool to go ahead and chase them
so I got this here screw that on and I
got this part here which will thread on
there and then go ahead and thread this
in and this will help clean out the
threads because there’s just a bunch of
junk in there that way I can go ahead
and screw in the crank puller and not
have it strip everything out
then let’s try this again that’s
screwing it farther yay okay now go
ahead screw this in hold this take this
in and that’ll pull the crank arm off
like that
pull the chain off the chain ring there
and pull that a little guy off then go
ahead pull this crank off so again pop
the disc cap off there pull this net off
of here and these threads look better so
I should be able to screw this right in
yeah this is a lot nicer on this side
there we go and pull that Craig carb off
now I’ll go ahead and remove this lock
ring here let me see this fit in here
yeah yeah like this and we go ahead and
loosen this lock ring like that and I
can remove this
and then I got like a little pin spanner
there’s a park tool SP a2 so I fit this
in here and hopefully this’ll come out
okay good
sometimes these I’ve had I’ve run into
these where they’re frozen in there and
a little bit dirty in there so I go
ahead and pull this out of there
and pull this out of here and then pull
the other bearings out of there and yeah
they’re pretty dirty and grimy in there
so yeah this would be good clean this
out now I’m go ahead and remove the
fixed cup and this is always enjoy doing
this because this is usually what
usually one of the most challenging
parts because they’re usually just on
their very very tight and this their
left hand threaded on what most bikes
are some they’re right-handed but most
of my left hand threaded and this is
left hand threaded so I have a tool here
this is a park tool hcw 4 and this fits
over here like this and I’m guessing
this is probably oh it actually came it
actually loosened this isn’t gonna be as
fun as I thought I was gonna be I
thought I was gonna be much more
challenging than this oh well you can’t
have everything maybe this is why the
whole thing was loose because this was
this is loose normally this just
extremely tight and there’s the fixed
cup all removed and I’ll clean
everything out in there okay here’s all
the parts from the bottom bracket and I
got like a little jar of some paint
thinner in here so I’m go ahead and
throw these in here and try to get rid
of all this old grease I’m throw the old
bearings in there because I’m gonna take
them to the bike shop and have them
match them so
I’d rather just not have them all greasy
parts all cleaned up okay now I need to
clean out the bottom bracket shell so
I’ve got a rag here just with some paint
that are on there and I’m just going to
go ahead and wipe this out and just try
to get all the old grease and gunk out
of there there’s also a good opportunity
to get on the outside of the shell going
to kind of clean up a lot of that stuff
while you’re there to help everything
off and then sometimes I’ll take like a
wire brush and just kind of brush it
around the threads a little bit kind of
get any gunk kind of loosened up out of
there and then wipe it out then try to
get all the stuff all dried out of there
okay I’m ready to start putting this
thing back together again first thing I
want to do is take a little bit of
grease and I just want to put a little
bit of a thin coating of grease just
come around inside the bottom bracket
shell that’ll help keep it from rusting
or corroding because this moisture will
get down there sometimes and this will
just kind of help and we get a little
bit just on these threads here now I’m
going to go ahead and put the the fixed
cut back in and before I do that I’m
gonna go ahead and put a some grease
down around the race of the cup like
this for the bearings and then I also
want to put just a thin bit of coating
of grease around the thread
that will help it go on a little
smoother and also help it from keep it
from seizing on there so much it also it
helps keep moisture from coming in that
direction okay I have some brand new
bearings here and I want to go ahead and
pack them with grease so just go ahead
and it’s squirted in a little bit of
grease between the bearings like this if
you don’t have like a little mini grease
gun like this you just go ahead and just
use your finger to kind of push some
grease in then I’m going to insert the
bearings into the the cup here I want to
have the cage part facing like out
towards the opening of the cup here and
then I go ahead and screw this in and
this is going to screw in
counterclockwise because it’s left-hand
threaded and you want to be very careful
and try to get it started the threading
in there don’t cross that it it should
go in smoothly and there now it’s going
in nice and smoothly because
everything’s cleaned and reached in
there so I’ll just turn it in by hand
should go in most the way by hand like
this and then when you can’t give it in
by hand
go ahead and use the wrench if you don’t
have a wrench like this you can actually
use like a crescent wrench against these
flat surfaces it just might be a little
harder to get it to stay on there like
that and then you want to get this tight
so to get it as tight as you can
like that just there nice and tight okay
next we want to go ahead and insert the
little plastic liner in there and it’s
kind of push this in this helps keep it
stuff they’ll come down like the seat
tube or the you know the down tube
there’s little holes in there to come in
so this will help keep dirt and stuff
away from the bearings now I have the
adjustable cup here I’m gonna go ahead
and put a line of grease around down in
here just like I did with the other Cup
just around the race there and I have
the the the new bearings so I’ll go
ahead and just put just a little bit of
grease put between the bearings on this
side
again the the bearings go in with the
race part the flat side of the race part
facing towards the opening there and I
have the axle and I’m gonna go ahead and
just put just a little bit of grease
around down in here just to kind of help
keep it from corroding you know getting
it to gets moisture if you think I don’t
want it to rust or anything like that
and I could put just a little bit of a
round down in here to do not put it on
the the flats here of the square taper
part do not put any grease on there and
now this axle is not symmetrical one
side a little bit longer than the other
and I know this part here on this axle
you need to make when you pull the axle
out you want to kind of keep an eye on
which side is which on this in this case
a little bit longer side here close
never tore the drive side there was like
a little ring here and that came out
from the drive side so go ahead and
insert the axle in like this and I also
want to put a little bit of grease just
around the the threads of this part here
just so it goes on nice and smoothly
just a thin coating of grease around
down and on there and then slide this on
and you want to make sure that it goes
in nice and smoothly you don’t want to
cross thread it and so it’s turning in
nice and smoothly and just turn it in by
hand now when you can’t turn it in by
hand anymore
and if it’s still a little bit of play
on the axle go ahead and use the the pin
spanner here it’s a good thing and
tighten this in a little bit
you want it this just is going to take a
little bit of a time to get adjusted
what you want is you want it tight
enough that there’s no play on the axle
but that’s a tight that is going to bind
up the bearings so a little a little bit
of play there and it’s getting tighter
to turn this in okay now it’s starting
to tighten there so I just back it off a
little bit and just tighten it just a
hair so you want it you want to be able
to turn the axle so it’s turned smoothly
but that there’s no play in there and
this could be just very fine tuning it
it’s where you get it where there’s no
play and it’s turning smoothly and that
actually feels pretty good there and I’m
not feeling play on there okay now go
ahead take the lock ring and then this
is going to go on like that with the pin
spanner go ahead and hold the center
part like that so it doesn’t turn and
then use the wrench to tighten the lock
ring like that then double check it make
sure it feels good and it feels like
there’s just a hair of play in there so
I’m just gonna back off the lock ring
just a little bit
tighten the center part in just a hair
just a small fraction feel it again and
then I’m going the lock ring actually go
ahead grab it like this and feel it that
feels good
it’s turning smoothly and there’s no
play in there okay now I’m ready to
reinstall the cranks and a little bit
grease got on here so I’m gonna go ahead
and wipe that off take the non-drive
side crank arm slide that on start the
nut on there
tighten the nut on here now this will
press the crank arm on to the square
taper spindle so I’m just going to ahead
and tighten this nut and you can use a
torque wrench I usually don’t I usually
just tighten it on there pretty good
like that then take the dust cap slide
that back on snap it on there like that
okay before you put the drive side crank
arm on you want to make sure the chain
is around the bottom bracket shell like
this otherwise this could be a real bear
to put back on go ahead and put the this
crank on and you want to make sure that
it it’s 180 degrees from this one so
that one’s facing down
this one’s facing up and I’ve got the
nut here I cleaned it up a little bit
and I’ll go ahead and start this on by
hand and
take this tighten it in there and then
with my ratchet wrench tighten this
again you want to kind of you can use a
torque wrench I used to just tighten it
on pretty good and take the dust cap
snap it back on there take the chain put
it back onto the chain ring and and all
done so nice and tight no play in there
or there they’re turning nice and
smoothly and that is how you replace a
the bearings in about a bracket I hope
that helped I hope you found that
interesting if you found it interesting
or useful please click the like button I
always like getting likes on my videos
and if you’re not subscribed to my
channel please subscribe to my channel
you click the big subscribe button right
down here and subscribe to my channel
and you’ll see new videos as they come
out anyway thank you very much for
watching I hope this helped

Bestseller No. 1
BMX Bike Ball Bearing CAGE CRANKSHAFT Bottom Bracket 5/16" x 9 CRANKSET CHAINSET
  • Outside diameter (approximate) : 45 mm.
  • Inside diameter (approximate) : 32 mm.
  • Number of balls : 9.
  • Balls diameter : 5/16" (7.94 mm).
  • Sold individually

Bicycle Crankshaft Bearings Review

Bike crankshaft bearings can be expensive, and they can also break easily. This is why it’s important that you know the basics about replacing bearings on your bike. How do you find bearings for your bike? Are you going to try to replace them yourself or are you going to hire someone to do it? Both have their good and bad points to consider.

If you’re looking to replace bearings on your own, you’re going to need some basic tools. The first thing you need to do is get yourself a new bike. Next you’ll need to get some faceplate screws (or similar type of fasteners). These will be used to screw the new roller bearing into place. Once you have these in place, contact us.

Next you’ll need to take off the old bearing cap. This is done by unscrewing it from the spindle and pulling it off. You should leave the cover plate on, as it helps the bearings fit into place better. Once the cover plate is removed, unscrew the bolts and remove the cap.

Now you need to get a quality crankshaft bearing. We recommend calling from a reputable dealer and asking for a replacement, rather than buying one online. When you contact us, we’ll take a look at your bike and give you a quote based on the condition of the bearings and the type of crankarm that you have (i.e. sealed or non-sealed).

To get a good, quality set of bearings, you’ll want to purchase from a company that can offer you a lifetime warranty. Also, contact us and let us know what brand and make of bike you have, so that we can provide you with the best possible options when ordering. Most dealers will offer you the option of buying bulk products for a large discount. This is especially true when you buy in bulk because we often get bulk discounts for large orders. In addition, we’ll work with you to ensure that you get exactly what you need for your bike.

Our other bicycle parts include Kubota engine parts. If you need to replace or repair your bike’s bike drive, or suspension, Kubota has the products that you need. Kubota crankshafts, sprockets, and brakes are manufactured in the United States and are renowned for their quality and rugged dependability. To contact us, send us an email and ask for a free no obligation consultation. With our expert advice and top quality products, you’ll be enjoying riding your bicycle again in no time!

Last update on 2021-01-18 / Disclaimer: as an Amazon Associate I earn from qualifying purchases.