Gallery, Projects and General > The Design Shop
Question: Split bearing housing for roller bearings?
PekkaNF:
How about cartridge spindle design and brackets against the shoulder?
This has many good features, like bushing that preloads bearings is long etc.
http://smg.photobucket.com/user/robwell/media/BardenSpindleDrawing.jpg.html
I'm not too thrilled boring recess on far end either. There are some work arounds. Like two different size bearings. Recess only for front bearing. Or bushing between bearings.
Pekka
vtsteam:
Thanks Andrew, John, Pekka :beer:.
Pekka the bearings and spindle are already in hand -- 7"x14" sieg lathe spindle, and two 30206 tapered roller bearings, all from Little Machine Shop. So no radical change in my plans at this point, just whether to make it as a two piece casting or one.
I'm itching to start the headstock while I have the time tomorrow. And with 95 views in so far, seems the yay's have it over the nays with the majority abstaining. I'll check back in the morning before grabbing a piece of timber in case there's a shift in opinion, and then probably start cutting wood for a split bearing housing headstock pattern.
PekkaNF:
--- Quote from: vtsteam on June 16, 2015, 09:48:26 PM ---... grabbing a piece of timber in case there's a shift in opinion, and then probably start cutting wood for a split bearing housing headstock pattern.
--- End quote ---
PineCad-3D :lol:
Pekka
Jonfb64:
Hi Steve
My Acorn lathe which is a copy of the Atlas 10f uses timkin taper roller bearings retained in place with bolt on bearing caps. The bearing cups however have a lip to allow the preload but I would think you could deal with that by having a lip for the cup to press against on the inside edge of the bearing housing. There are lots of pictures on lathes.Co. uk of the various clones of this lathe.
Jon
Country Bubba:
IFRC, I have seen some differential cases for automotive purposes built that way and the stresses there can be quite high.
I say go for it.
I think the main reason a lot of manufacturers do not do something like this is because it would add cost to their product. Just making a hole is simple on a production line, but to add a separate cap and a couple of bolts per bearing could get costly in their eyes.
just my .02
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