Hello all, I am just now getting back around to reassembly of my Chinese milling machine. Had it broke down to install new spindle bearings. I do have a question regarding the gibs on this machine. Like most Chinese machines they appear to be cast iron. I would like to polish them up with some sandpaper on my surface plate just to remove some of the rough edges. They are rough as a cod and could benefit from a little refinement. I do know not to remove any material from the scraped faces.just wondering what grit paper would be ideal and if any one has been down this path. Thanks in advance
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Spindle bearing preload
- Thread starter Pevehouse
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Didn't you mean "rough as a cob" ? Cod are usually smooth I thought, although I haven't felt one lately 
LolDidn't you mean "rough as a cob" ? Cod are usually smooth I thought, although I haven't felt one lately
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Buncha cod rubbers…..
As to those gibs…. Yeah…. Wow.
Not sure the grit would matter much, then again I didn’t know they still made pall malls.
As to those gibs…. Yeah…. Wow.
Not sure the grit would matter much, then again I didn’t know they still made pall malls.
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- Jun 7, 2013
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To remove burrs from the gibs, I would just use a single cut file. What happened to the subject title regarding bearing preload?
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Any input on how to properly measure preload is certainly welcome. Been avoiding that part of the assembly,lol. The only way I have ever measured bearing preload is measuring the rotating torque on a pinion bearing setup in a rear differential. I do that pretty often but I’m not sure if that will work here
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I think you need to provide a detailed description of the bearing system in order to get a useful answer.
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I will post some pictures of the bearing system in just a bit. To sum it up , it’s your typical quill with taper roller bearing top and bottom. There’s really not much else to add. There’s two taper bearings and the spindle,lol.I think you need to provide a detailed description of the bearing system in order to get a useful answer.
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And yes. That was supposed to be cob however autocorrect mangled it into something elseDidn't you mean "rough as a cob" ? Cod are usually smooth I thought, although I haven't felt one lately