Tile Saw Repair – Replacing the Shaft Bearings (MK Diamond Part # 137711)
Tile Saw Repair – Replacing the Shaft Bearings (MK Diamond Part # 137711)

There are two bearings on your tile saw’s
arbor. The bearings support the arbor and allow it
to rotate. The ball bearings will provide years of trouble-free
use but eventually, they will fail and will need to be replaced. A bearing will usually give warning when it
is going bad often making a squeaking or squealing sound. The bearing should be replaced at the first
sign of failure to prevent the bearing from seizing. A seized bearing might damage the arbor or
the housing, leading to much more costly repairs. Replacing the arbor bearings is a repair that
you could do yourself. I’m going to show you how. Hi, I’m Mark Sodja. Do it yourself repairs like these are easier
than you might think. From lawn machines to cordless drills, kitchen
mixers, outdoor grills, our how-to videos walk you through each repair from start to
finish, so doing it yourself means never having to do it alone. Let’s get started. Mark: I’ll begin by removing the blade from
the saw. I’ll tip the guard back, lock the arbor using
the blade lock, and then use a wrench to remove the nut. I’ll remove the flange and the blade. Now, remove the lock knob and the belt cover. Now, I can remove the belt. Now, remove the belt pulley
and the key. Now, I can use my rubber mallet to tap the
blade shaft out of the housing. Now, I place the shaft in my bearing press
and first remove the collar. It looks like the bearing came off with it. Now, I can install the first new bearing. I’ll press this bearing onto the threaded
end of the shaft. The collar gets pressed onto this narrow portion
of the shaft. I’ll place it over the shaft and back into
the press. I’ll be careful here I don’t damage the threads
on the shaft. Now, I need to remove the second bearing. It’s still in the housing. To do that, I’ll use a socket that has a diameter
about the same as the inner race diameter. I’ve put the socket on an extension. I’ll place this through the housing and onto
the inner race, then use my rubber mallet to tap the bearing out. Now, I can tap the new bearing into the housing. Now, insert the arbor simply back into the
housing and through the bearing. I’ll use my rubber mallet to tap the arbor
into that second bearing. Depending on how tight this connection is,
it may push the bearing back out of the housing. Sometimes it does, sometimes it doesn’t. If it pushes the bearing out, we’ll have to
use a socket to reinstall it. It did push the bearing the bearing back out
of the housing. To install it onto the shaft, I’m going to
use a socket with a diameter that’s about the same as the inner race and the shop hammer. I’ll just tap the bearing onto the shaft. Now, reinstall the pulley key and the pulley. I’m going to leave the pulley loose right
now and put the belt on, that way we’ll be able to align the belt. As I sight down the belt, I can see that this
upper pulley is out just a little further than the bottom one. I have the bottom one flush, so I’m going
to go ahead and loosen the upper pulley and tap it in just a small amount. That looks good right there. I’ll go ahead and tighten it up. I’ll place the belt cover over the belt, aligning
it with the holes and I’ll secure it with the bolts. I’ll reinstall the lock knob. I’ll finish up by reinstalling the blade. That’s all it takes to install new shaft bearings
on your tile saw. Be sure to check back often for new videos
and expert advice. If you found this video helpful, give us a
thumbs up and leave a comment.

4 thoughts on “Tile Saw Repair – Replacing the Shaft Bearings (MK Diamond Part # 137711)”

  1. ED EDMUND says:

    hi did you hit the bearing press with the hammer ?
    thx ed

  2. Tom Tran says:

    3:45 He install bearing wrong way.for myself i would install bearing to pulley and than install shaft .but any way he is a good wrench.

  3. John Saccoccio says:

    Thanks for the help. My saw is screaming so loud I can't even think of running it without hearing protection, even dry. As an FYI, I try to avoid hammering on an inner race to press an outer race into a housing at all costs (same for hammering an outer race to press a bearing onto a shaft) Too much chance for potential damage to the balls and races. A little heat on the housing helps to expand it.

  4. azmike1956 says:

    Hammering bearings? Seriously?!

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