Morning: After another warm day here in Apache Junction in the 70's I thought a follow up on the "Kluber" grease would be in order. When we lubed the spindle bearings in the screw machines which were all ball & ball thrust with a very small amount of grease we put approx. a tablespoon full in the headstock. The story is that as it warms up the grease creates a lubricating cloud and does its thing. There are no grease zerks on any other way of lubing the spindle once it is assembled. Amazing how it worked year in and year out but it does. Seeya Robert Malterer ----- Original Message ----- From: "Marius Liebenberg" <mar...@mastercut.co.za> To: <emc-users@lists.sourceforge.net> Sent: Friday, November 28, 2014 3:38 AM Subject: Re: [Emc-users] Lathe spindle bearing problems
> Hi Robert > Thanks for the grease tip. I would have fitted normal wheel bearing > grease. I will see if I can find what you suggested over here or at > least something similar. > > On 2014-11-28 10:51, Robert Malterer wrote: >> Morning: I retired from the screw machine world some 15 yrs. ago. The >> grease we used in the spindles was a "Kluber" brand sinthetic grease. >> Very >> spendy, very good though. The spindles that the grease was used in would >> go >> from 0 to 10,000 RPM and back to 0 approx. twice a minute, 24 hrs. per >> day, >> 5 days a week and had operated over 10 yrs. without any service to the >> spindles up to my retirement. These machines were "Star" brand swiss >> style >> screw machines. I know that all the other brands also used the same >> grease >> in their spindles. I remember having to service the spindle from another >> larger machine after a power glitch and servo failure and my boss >> complaining about the cost of a tube of grease. >> It is very common to remove the bearing cup by welding and at my time of >> retirement maintaince had a series of non conductive sleeves they would >> slide in to prevent spatter and a arc from leaving a buger on the ID. >> Before I left MN for AZ I stopped buy the local auto repair shop and they >> proudly showed me the better part of a 5 gallon pail full of bearing >> races >> that had been removed with the welding technique. >> Seeya >> Bob Malterer >> >> ----- Original Message ----- >> From: "Marius Liebenberg" <mar...@mastercut.co.za> >> To: <emc-users@lists.sourceforge.net> >> Sent: Thursday, November 27, 2014 9:13 PM >> Subject: Re: [Emc-users] Lathe spindle bearing problems >> >> >>> A puller like that would be nice to have but I am afraid that there is >>> no gap or any protrusion of the bearing race to grip on. >>> On 2014-11-27 22:49, Marcus Bowman wrote: >>>> On 27 Nov 2014, at 20:21, Marius Liebenberg wrote: >>>> >>>>> I will do the weld bead tomorrow and hopefully it will come out >>>>> without >>>>> too much trouble. >>>> It's a counsel of perfection, I guess, at this stage, but I would use a >>>> puller fitted with very thin lips at right angles to the legs. These >>>> are >>>> designed to remove bearings from blind holes in car engines or >>>> gearboxes. >>>> The little lips are hardened and when you tighten the puller it >>>> squeezes >>>> the lips in behind the bearing, by wedging it into the radius in the >>>> outer casing of the bearing (the bit you have stuck in there at the >>>> moment). A GOOD QUALITY puller works well, and can get enough grip to >>>> ease the bearing off the bottom of the hole and get it out. I have done >>>> this once or twice and it is a good solution. My friend has a selection >>>> of good pullers for all sorts of awkward jobs like this. >>>> >>>> At this stage, unless you know someone with a puller like this, welding >>>> is probably your only other option. >>>> >>>> Marcus >>>> >>>> >>>> >>>> >>>>> On 2014-11-27 19:30, Ed wrote: >>>>>> On 11/27/2014 10:52 AM, Marius Liebenberg wrote: >>>>>>> So a little bigger tap with a little bigger mallet did the job. The >>>>>>> front bearing fell apart and is badly worn. >>>>>>> Now the seat is stuck inside the headstock >>>>>> To take out a bearing cup I use an arc welder and run a bead of weld >>>>>> around the inside of the cup, let it cool down, extract with fingers >>>>>> or >>>>>> tap the housing with your mallet. It can be done by heating with an >>>>>> oxy-acet torch but you must be fast in, fast heat and fast out. Arc >>>>>> works MUCH better. >>>>>> >>>>>> >>>>>>> and the bearing piece is >>>>>>> stuck to the shaft and I have no idea how to get it out. >>>>>>> >>>>>> The bearing race on the shaft is probably best removed by carefully >>>>>> grinding through the race in a couple of spots and cracking it with a >>>>>> chisel. >>>>>> >>>>>> Ed. >>>>>> >>>>>> >>>>>> >>>>>> ------------------------------------------------------------------------------ >>>>>> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server >>>>>> from Actuate! Instantly Supercharge Your Business Reports and >>>>>> Dashboards >>>>>> with Interactivity, Sharing, Native Excel Exports, App Integration & >>>>>> more >>>>>> Get technology previously reserved for billion-dollar corporations, >>>>>> FREE >>>>>> http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk >>>>>> _______________________________________________ >>>>>> Emc-users mailing list >>>>>> Emc-users@lists.sourceforge.net >>>>>> https://lists.sourceforge.net/lists/listinfo/emc-users >>>>>> >>>>> -- >>>>> >>>>> Regards /Groete >>>>> >>>>> Marius D. Liebenberg >>>>> +27 82 698 3251 >>>>> +27 12 743 6064 >>>>> QQ 1767394877 >>>>> >>>>> >>>>> ------------------------------------------------------------------------------ >>>>> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server >>>>> from Actuate! Instantly Supercharge Your Business Reports and >>>>> Dashboards >>>>> with Interactivity, Sharing, Native Excel Exports, App Integration & >>>>> more >>>>> Get technology previously reserved for billion-dollar corporations, >>>>> FREE >>>>> http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk >>>>> _______________________________________________ >>>>> Emc-users mailing list >>>>> Emc-users@lists.sourceforge.net >>>>> https://lists.sourceforge.net/lists/listinfo/emc-users >>>> ------------------------------------------------------------------------------ >>>> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server >>>> from Actuate! Instantly Supercharge Your Business Reports and >>>> Dashboards >>>> with Interactivity, Sharing, Native Excel Exports, App Integration & >>>> more >>>> Get technology previously reserved for billion-dollar corporations, >>>> FREE >>>> http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk >>>> _______________________________________________ >>>> Emc-users mailing list >>>> Emc-users@lists.sourceforge.net >>>> https://lists.sourceforge.net/lists/listinfo/emc-users >>>> >>> -- >>> >>> Regards /Groete >>> >>> Marius D. Liebenberg >>> +27 82 698 3251 >>> +27 12 743 6064 >>> QQ 1767394877 >>> >>> >>> ------------------------------------------------------------------------------ >>> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server >>> from Actuate! Instantly Supercharge Your Business Reports and Dashboards >>> with Interactivity, Sharing, Native Excel Exports, App Integration & >>> more >>> Get technology previously reserved for billion-dollar corporations, FREE >>> http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk >>> _______________________________________________ >>> Emc-users mailing list >>> Emc-users@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/emc-users >>> >> >> ------------------------------------------------------------------------------ >> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server >> from Actuate! Instantly Supercharge Your Business Reports and Dashboards >> with Interactivity, Sharing, Native Excel Exports, App Integration & more >> Get technology previously reserved for billion-dollar corporations, FREE >> http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk >> _______________________________________________ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > > -- > > Regards /Groete > > Marius D. Liebenberg > +27 82 698 3251 > +27 12 743 6064 > QQ 1767394877 > > > ------------------------------------------------------------------------------ > Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server > from Actuate! Instantly Supercharge Your Business Reports and Dashboards > with Interactivity, Sharing, Native Excel Exports, App Integration & more > Get technology previously reserved for billion-dollar corporations, FREE > http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! 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