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March 26, 2019, 12:07:43 am
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Trouble removing Pillow Block Bearing

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Author Topic: Trouble removing Pillow Block Bearing  (Read 329 times)
kjsspot
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« on: August 18, 2014, 10:16:14 pm »

Hey folks, I purchased an old Craftools 1224 and I need to change the wheels.  None of the bolts are rusted and everything has been real easy to unfasten, BUT I can't get the pillow block bearing off.  There's gotta be some trick that I'm not aware of.

I've removed the top of the machine.  I've unscrewed the end flat lap wheel, but I need to remove the pillow block bearing to get to the wheels.  I can easily loosen the nut on the shaft but not the bearing.  The set screws came out easily as well.  Youtube suggesting tapping the collar with a drift and hammer but that didn't do anything either.

Any ideas??


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* 10632876_10204346777573195_5125027690168301792_n.jpg (77.68 KB, 720x960 - viewed 4 times.)
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dickb
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« Reply #1 on: August 18, 2014, 10:55:53 pm »

There is a penetrating oil called P B Blaster. You can buy it at auto parts stores and hardware stores. Spray the shaft at both sides of the bearing and let it soak for a while, 2 hrs, 8 hrs a week and keep trying to tap the shaft loose from the bearing. It has rusted and gooped itself together and will take a little effort to get it apart. Just be careful not to damage the shaft by hammering on it. It should come off that way. If not it needs to be pressed off at a machine shop.

Dickb
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bobby1
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« Reply #2 on: August 18, 2014, 11:02:45 pm »

Also squirt the PB Blaster down the set screw hole.
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bobby1
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« Reply #3 on: August 18, 2014, 11:09:45 pm »

Whacking it with a hammer and large punch on the outer rim of the collar may help. Grip the collar with a large slip joint pliers  and grip any wheel or such mounted on the shaft and twist them against each other. Snarl and threaten it menacingly, anything will help!
Bob
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itsandbits1
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« Reply #4 on: August 19, 2014, 07:53:10 am »

if you can whack the collar a few times without deforming it and then whack the shaft from both ends alternately after the penetrating oil has a chance to work it should come loose. make sure you don't deform the threads; even brass will push them over if you don't hit square, I usually put the nut on till it is flush with the top of the threads to protect them.
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john likes rocks!
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« Reply #5 on: August 19, 2014, 08:24:53 am »

Heating with a torch to expand the stuck collar may help as well....

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qtz2010
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« Reply #6 on: August 19, 2014, 09:48:04 am »

Hi, if you decide to tap the shaft, use a piece of two by four, to protect the shaft. Ten you will be able to hit it harder. qtz2010
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Rockoteer
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« Reply #7 on: August 19, 2014, 10:20:55 am »

Also squirt the PB Blaster down the set screw hole.
good idea
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« Reply #8 on: August 19, 2014, 10:40:49 am »

All of the above. Also check to make sure that you donít have any more set screws on the bearing or shaft. Also check to make sure you donít have a set screws below the set screw you removed. I was working on a saw and removed the set screw and did not realize there was two in the same hole.
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kjsspot
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« Reply #9 on: August 19, 2014, 10:47:16 am »

Thanks y'all!  Getting some pentrating oil and I'll try this again.
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PhilNM
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« Reply #10 on: August 19, 2014, 02:52:24 pm »

look for hidden set screws. or another collar you overlooked. Wintergreen oil works well to penetrate and loosen, and smells great too.  sometimes tapping it in the opposite direction just a wee bit loosens them a little so you can apply more oil, then go back and forth. Just takes some time, patience and a little sweat.... I have a 2.5 inch drain pipe cap I've been working on removing for over a year. It's so rusted on that the penetrating oils are taking forever to soak. Tried a bigger pipe wrench with a longer lever, and rather than move, the metal started to buckle... now that's rusted on!
Also, Harbor freight sells a bearing puller set. They work well also IF the bearing is in it's reach.
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slabbercabber
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« Reply #11 on: August 19, 2014, 04:16:49 pm »

Better pillow blocks use a rotary locking collar.  Put a vise grip on it and whack it counter clockwise.
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kjsspot
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« Reply #12 on: August 21, 2014, 07:07:31 am »

I got it folks!  :D  Now I'm just waiting on some carver wheels.  Dave's on vaca till next week.  :(
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Charles
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« Reply #13 on: August 21, 2014, 07:53:53 am »

Super  yippie, what finally worked for you??????

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kjsspot
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« Reply #14 on: August 21, 2014, 08:01:50 am »

Mostly giving the oil time to work.  Then I had my vice grips on the collar and hubby had a hold of the shaft so we could get a bit of torque going.
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itsandbits1
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« Reply #15 on: August 21, 2014, 08:06:40 am »

congratulations, you are now an "old Craftstool" certified technition; your certificate is in the mail yes
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The wheels of life go round and round, round and round, round and round, and then they hit a rock

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