Removing a pillow block bearing
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Topic: Removing a pillow block bearing
Posted By: littlemarv
Subject: Removing a pillow block bearing
Date Posted: 30 May 2018 at 9:36pm
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As in, how do you? I need to remove this bearing, and reinstall it on a shaft. I am shortening the shaft, so I was able to just cut it off. I removed the collar with the two setscrews, and tried to air hammer the sleeve off the shaft. If nothing else, I can find a piece of pipe and press it off in a hydraulic press. Or am I going at it all wrong? Thanks in advance.   ------------- The mechanic always wins. B91131, WC23065, WD89101, CA29479, B1, Early B10, HB212, 416H |
Replies:
Posted By: Coke-in-MN
Date Posted: 30 May 2018 at 9:38pm
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Soak it good with penatrant and then using a press - it should come off - or not ! ------------- Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something. "Challenges are what make life interesting; overcoming them is what makes life meaningful." |
Posted By: Snowvalley Dairy
Date Posted: 30 May 2018 at 10:23pm
| make sure to polish the shaft with emory cloth or sandpaper. also remove any burrs with a file or grinder then press it off. |
Posted By: DiyDave
Date Posted: 31 May 2018 at 4:44am
| Tried the wax trick, yet? |
Posted By: klinemar
Date Posted: 31 May 2018 at 6:27am
| All of the suggestions are good. The wax trick works much like penetrating oil as long as it penetrates. I have had bearings like these that had been run in haylage that actually welded themselves to the shaft and had to be cut off with the torch because I did not have a press ! Sometimes all you saved was the shaft ! |
Posted By: wfmurray
Date Posted: 31 May 2018 at 8:12am
| Most likely set screws have made a burr on shaft and you will have to force it over burrs to get off . Penetrating oil may not help much. |
Posted By: jaybmiller
Date Posted: 31 May 2018 at 8:23am
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my 'cheat' is to take a 4 1/2" angle grinder with a THIN disk on it. Mount pillow block i vice ,clamping the base of the block.Make 2 vertical cuts to ALMOST the shaft. Whack off the 'cut' portion of the block. NOW the shaft may slide out, if not CAREFULLY cut/grind to really close to the shaft. Use hammer to bang out shaft from block. 'dress' the shaft to 'as new' condition. Takes me maybe 1/2hr of reasonably pleasent time to do it this way and no cuts or other booboos on my body. Jay ------------- 3 D-14s,A-C forklift, B-112 Kubota BX23S lil' TOOT( The Other Orange Tractor) Never burn your bridges, unless you can walk on water |
Posted By: littlemarv
Date Posted: 31 May 2018 at 9:19am
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Good thread, thanks for the help. I am trying to save the bearing, not the shaft. I'd imagine the bearing is not cheap. At any rate, soaked it in penetrating oil for a few hours, then found a piece of pipe that just fit over the shaft. The press never even grunted, she just slid right off. Thanks again. ------------- The mechanic always wins. B91131, WC23065, WD89101, CA29479, B1, Early B10, HB212, 416H |
Posted By: Clay
Date Posted: 31 May 2018 at 11:22am
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Everyone has made excellent suggestions. Clean rust off shaft with abrasive paper. File off high spots. If the end of the shaft has be hit and mushroomed, use of a Dremel or grinder may be necessary. Soak with KROIL. Give it time to work. Go have lunch or come back tomorrow. Use a suitable puller or press. It may be necessary to hit the old bearing. Use a phenolic block or brass drift. Sometimes a punch in an air hammer will do the trick. |
Posted By: LouSWPA
Date Posted: 31 May 2018 at 12:12pm
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Dynomite! ------------- I am still confident of this; I will see the goodness of the Lord in the land of the living. Wait for the Lord; be strong and take heart and wait for the Lord. Ps 27 |
Posted By: Coke-in-MN
Date Posted: 31 May 2018 at 8:37pm
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Reminds me of guy I worked with as a mechanic in station (way back) Had a special press for wheel bearings on axle shafts - customers came in and bought a bearing from him and asked to have it pressed on axle as he could not get old bearing off - took into back room - big hammer broke outer bearing race - dull chisel into bearing groove of inner race to remove that - slide new bearing onto shaft - 3' long pipe used as a driver and pound bearing home - Charge customer for use of special wheel bearing press and special puller and bearing . ------------- Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something. "Challenges are what make life interesting; overcoming them is what makes life meaningful." |
Posted By: Michael V (NM)
Date Posted: 31 May 2018 at 9:48pm
| What you really need to save is the pillow block...the bearings are relatively cheap to replace...if ya hafta replace the complete unit, that gets $$$$$ |