I believe the OP has tried to install
tapered roller bearings and can not get the preload just right.? I
could be wrong tho, even very wrong is possible.....
On 2/7/2025 7:49 PM, Roy via groups.io
wrote:
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What this whole thread is overlooking is the fact that the
OEM bearings are deep groove ball bearings; the cheapest option!
An upgrade to angular contact bearings gives more thrust
resistance to the spindle, resulting in the lathe becoming more
rigid. Tapered roller bearings would be the most rigid, but,
sealing them is much more complex.
?
I upgraded mine to angular contact bearings years ago &
have been happy with the results! My preload setting method is
to simply adjust preload for slight heating at full speed.
?
The only benefit to higher precision bearings in the spindle
is reducing wallet weight!?
?
?
