paulr
off to a rocking start
Member since April 2023
Posts: 13
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Post by paulr on May 10, 2023 13:51:51 GMT -5
I just bought an old, well used Star Diamond TS-10 saw. I'm getting .003-4" radial end play on the arbor. Is it time for new bearings?
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Post by catmandewe on May 10, 2023 20:38:24 GMT -5
That is a waterpump arbor, the shaft and bearings are purchased together. You can find the arbor without the threads and flat for the pulley, but you will have to thread it and do the flat yourself.
If you try to press the bearings out of the housing it will crack the housing.
Tony
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paulr
off to a rocking start
Member since April 2023
Posts: 13
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Post by paulr on May 11, 2023 10:06:31 GMT -5
That is a waterpump arbor, the shaft and bearings are purchased together. You can find the arbor without the threads and flat for the pulley, but you will have to thread it and do the flat yourself. If you try to press the bearings out of the housing it will crack the housing. Tony Thanks Tony. I talked to some bearing suppliers and they told me the same thing. The shaft is grooved and is the inner race, makes me wonder how the heck they build these in the first place. A water pump bearing # 885586 is dimensionally identical with a slightly longer shaft so that would be the one to get for anybody wanting a new arbor.
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QuailRiver
fully equipped rock polisher
Member since May 2008
Posts: 1,640
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Post by QuailRiver on May 11, 2023 20:33:32 GMT -5
It's my understanding that on those types of water pump bearings that they cut the threads into the shaft before they treat the steel to harden it and before they assemble it. I was once (just once) able to get a local machine shop to agree to cut threads into a generic already assembled water pump bearing shaft. Afterwards the shop owner said that he wished he hadn't agreed to do it. The hardened steel bearing shaft ruined three of his cutting bits.
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Post by catmandewe on May 11, 2023 20:53:29 GMT -5
I have cut threads into several of these, it is hard to get started but once you get it started it cuts pretty good.
Tony
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paulr
off to a rocking start
Member since April 2023
Posts: 13
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Post by paulr on May 11, 2023 23:01:10 GMT -5
I would guess that they're just case hardened but it'd good to know, thanks for the info.
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