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Viceroy screwcutting lathe TDS1/1 PCS Headstock bearings
Posted: Thu 20 Aug , 2009 6:40 am
by bradders
Customer writes .................
Ref Viceroy screwcutting lathe TDS1/1 PCS
Specifically: I suspect bearing (chuck end) of headstock has developed a fault .
I have a parts list which lists Two bearings
Timken bearing LM676048/67010B
and Timken bearing 19150/1926B
I imagine these relate to taper roller bearings. Still available.but...are they flanged? I'm unwilling to undo head assembly in case it collapses in my hands and I can't replace?
Any advice gratefully received.
Re: Viceroy screwcutting lathe TDS1/1 PCS Headstock bearings
Posted: Thu 20 Aug , 2009 7:34 am
by Andy B
They are standard taper roller bearings.
See the various threads by Dazz regarding the strip-down and re-assembly of his spindle:
Removing the spindle
Removing the spindle - the rig
The spindle removed
Spindle refitting
Re: Viceroy screwcutting lathe TDS1/1 PCS Headstock bearings
Posted: Thu 20 Aug , 2009 7:42 am
by bradders
Re: Viceroy screwcutting lathe TDS1/1 PCS Headstock bearings
Posted: Thu 20 Aug , 2009 7:54 am
by Andy B
I think the numbers above are slightly incorrect:
19150/1926B should read 19150/1926
8
LM676048/67010B should read LM67604
B/LM67010B
According to this
reference sheet, if both cup and cone have the 'B' suffix they are not flanged but have a steeper included angle compared to the basic number.
Andy
Re: Viceroy screwcutting lathe TDS1/1 PCS Headstock bearings
Posted: Fri 06 May , 2022 19:24 pm
by Fiddler
BEARING CLASSIFICATION.jpg
Re: Viceroy screwcutting lathe TDS1/1 PCS Headstock bearings
Posted: Fri 06 May , 2022 19:49 pm
by Fiddler
Andy B wrote: ↑Thu 20 Aug , 2009 7:54 am
I think the numbers above are slightly incorrect:
19150/1926B should read 19150/1926
8
LM676048/67010B should read LM67604
B/LM67010B
According to this
reference sheet, if both cup and cone have the 'B' suffix they are not flanged but have a steeper included angle compared to the basic number.
Andy
Re: Viceroy screwcutting lathe TDS1/1 PCS Headstock bearings
Posted: Tue 10 May , 2022 18:33 pm
by Pete.
I never had one of those apart but I have had the later model apart and those were not. Also be aware that the inner race tends to be very tight on the spindle which makes effective adjustment very difficult. If you were to pull off those bearings and when re-fitting them they need a lot of affort to move along the spindle, or are even creaking as you do it, then take them off and give the spindle a good clean up with emery to ease the fitment.
Re: Viceroy screwcutting lathe TDS1/1 PCS Headstock bearings
Posted: Wed 29 May , 2024 4:44 am
by dazz
Hi
The most reliable method of identifying the correct bearings is to read the part number off the fitted ones.
I was told these bearings are also used on Cessna wheels so readily available.
There are no "precision" grades of these bearings. That hasn't stopped me turning to tolerances within 0.0002".