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Bearing Maintenance » How to properly clean your skateboard
bearings
I never liked cleaning my room, my flat or my house -
especially the bathroom. Actually, I'm no fan of cleaning in general. It takes
time and energy that I could better spend bouncing my head off various ramps
and such. But when it comes to skate bearings, you have to clean them. More
importantly, you need to clean and maintain them correctly.
You can hose off your car, but it’s a lot better to actually
wash it properly. The same concept holds for dogs - you can hose them off, but
they'll only smell like "wet dog", which is only a step above
smelling like dog crap. But this article isn't about dog crap or how to get it
off a rug after you’ve stepped in it. That's a different article for folks
interested in dogs and how to deal with poop.
Spitfire - Cheapshot Bearings |
Whether you went with a cheap (but good) bearing for £9 or
broke the bank on a set of Bones Swiss, keeping them clean will make them last
a long time. Most skate environments are dirty with dust, mud, water, or the
aforementioned dog crap... you name it, you've probably ridden through it. And
whatever it was, part of it will work its way into your bearings. You'll be able
to tell when the bearings become noisy or the spin is uneven. If you ride
through crap, clean your bearings right after your session, not after all the
crud has had a chance to settle in and cause rust or other damage.
Go on....Break the bank! |
The fundamental reason behind cleaning them is friction.
Friction is caused by the internal motion of the balls inside the bearing
housing and causes heat. Heat makes the oil dissipate. As the remaining oil
mixes with the dirt and crap, your ride gets noisy and worse. Don't bother
adding more oil to your bearings without first cleaning them. It only helps for
a short while before the damage ensues.
Here's the good news. If you regularly clean your bearings,
when they become dirty, one set can actually out last a few sets of wheels.
So, being a responsible adult - at least we assume you're an
adult as you're still reading and haven’t used up your 30 second attention span
most under 16s have - you know about the necessity of cleaning things. Just the
way you're anal about cleaning the engine compartment of your Volvo by checking
all the fluids, pressures and brick-a-brack; the same applies to your skate.
Fortunately, your skate is much less complex than a bloated over-priced Swedish
tank.
Visual Inspection of Skateboard Bearings
Skateboard bearing
Pictured at left is a standard skateboard bearing. The
rubber protective gasket or ring (yellow ring) keeps most dirt and grime out of
your bearings.
Inside a skateboard bearing
The individual bearing balls sitting in the raceway track
just beneath the rubber ring. The larger image shows ceramic bearings. The
smaller inset shows standard steel bearings. In each image, you'll see the
inner and outer steel walls against which the bearing make contact and spin as
your wheels roll.
skateboard bearing raceway
The retainer (shown removed from the bearing housing) has a
series of "cups" that hold and separate the individual bearings.
Cleaning Products (solvents)
Citrus based cleaners work well, but can leave a residue
behind. Solvents work best, but are very flammable. Have a smoke away from your
cleaning project and your dog. Rover probably craps on the carpet because he
hates the way you smell.
Solvents that will do a good job are: carburettor cleaner
(found in auto parts stores); kerosene, acetone or lacquer thinner. Minimum 90%
pure alcohol (found in hardware stores).
Cleaning Process for Skateboard Bearings
Spectator so happy Danish had clean bearings he Hi Five'd him! |
Since your bearings are encased in a round insert - that
fits nicely in your wheels - its not completely obvious how to take them apart
or what you need to clean. You might think rubbing Windex and a napkin around
the outside seems logical, but that would make you... dumb. Cleaning the outer
casing might make you feel useful, but it won't change your ride. The noisy (or
crunchy) sounds are caused by the grit and dirt inside the bearing.
Remove the bearing from your wheels. Some inexpensive skate
tools have a bearing remover. Do not use a hammer and screwdriver to pound out
the bearings. If you do that, there's really no point in cleaning them.
Carefully remove the rubber ring on the outside of the
bearing. You can use a bent paper clip or craft-knife to pry it up. Don't go
wild and damage the ring, it insulates the bearings from dirt.
Clean the rubber ring with soap and water, not solvents
(solvents may damage it), and allow it to dry. If you use a cloth to dry it,
use a lint-free one - not a tissue or napkin - got it?
Re-coat the ring with a light oil.
Push out the ball-retainer with a paper clip by pushing in
between the balls. Do this carefully, from the back side, so you don't touch
the balls or their cupped seats. Scratches or abrasions to either can upset the
internal flow.
Place the bearing housing, still containing the individual
ball bearings, and raceway into a metal can or pot.
Add your chosen cleaning solution to the metal can or pot
(or the posh Bones bearing cleaner can thingy). You only need to add enough to
cover you bearing components.
Gently agitate the container by swishing it in a circular
motion. Let the solution do the cleaning, you don't need to wipe or scrub the
components once in the cleaning solution.
Pretty Bearings! |
As you notice the solution becoming darker (this happens as
grime is removed from your bearing components), pour off the solution and add
clean solution. Continue this process until the cleaning solution remains
clear. This is when your cleaning process is complete. This soaking period can
be completed in 5 or 10 minutes. There is no advantage to soaking longer or
overnight. The solvents will work quickly.
Ross Zajac... on clean bearings....Phew! |
Once clean, remove all the components from the solution and
dry immediately. A hard flat surface works best for drying. Paper towels to soak up the excess cleaning
fluid so you can better determine when the components are really dry. You may
want to use a can of compressed air to ensure no moisture or dirt remains.
Place the raceway, with the bearings (evenly spaced) into
their cups, back into the bearing retainer.
Add a modest amount (only 2 or 3 drops) of light weight
skateboard bearing oil/lubricant. There is no need to put a drop on each ball
bearing or try to evenly coat all the surfaces.
Put the rubber shield back in place, making sure there are
no gaps or creases. Rubbing your finger around the seal will remove creases.
Now reassembled, hold the bearing between your thumb and
finger and give it a spin. This will distribute the oil to all moving parts and
surfaces. You should hear a pleasant hum as opposed to the crunchy sound you
heard before this operation began.
Apply a thin film of oil to the outer surfaces of the
bearing housing. This will keep it from rusting.
Pop the bearings back in your wheels using a skate tool or
bearing press.
Go Skate!
Some bearings require a break-in period after cleaning. This
simply means that the full benefit of cleaning may not be noticed until you
ride for a half hour or so.
Modifications
This is a tip or suggestion of something you should not do.
Never remove the rubber gaskets/shields (rings) unless
you're cleaning your bearings!
I've actually read several pro skaters recommending the
removal of these to make your ride louder. Louder!?! Are you for real? Remember
when you were eight (Reuben) and you put cards in the spokes of your bicycle
tires to make it sound like a motorcycle? Remember putting replacing them with
something stiffer to sound like a Harley? OK. Do you remember the first person
who told you your bike looked stupid and sounded like stale cardboard? Hence,
this turned out not to be a good idea. I'm pretty sure these guys all have their own bearings out and if you buy more of their bearings.......well you get the picture :)
That rubber ring is your poor little bearing's only defence against dirt and grime getting into the actual ball bearings. So, if you need the rush of a loud noise, I suggest you try making some sort of noise with your mouth. You'll look like an idiot, but your bearings will thank you.
That rubber ring is your poor little bearing's only defence against dirt and grime getting into the actual ball bearings. So, if you need the rush of a loud noise, I suggest you try making some sort of noise with your mouth. You'll look like an idiot, but your bearings will thank you.