DeSelle
Cast Iron
- Joined
- Oct 23, 2006
- Location
- Midlothian, TX
This is pure laziness. Will it ruin the lathe? Probably not. But its bad practice and this is how people get hurt. People get away with things all the time until they don’t.
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Actually they do not....
The journal is smaller than the bore, to allow oil room, so the contact is actually only over a theoretical line, but actually a larger area based on the hardness and elasticity of the material. Bronze is not that hard, and may be deformed.
The ball bearing has a defined load limit, which is ridiculously in excess of the machine weight. I don't have numbers for the bronze bearing, and am unwilling to go with my own calculations.
Ball bearings contact in a line too. As do tapered rollers. Bronze bearings have huge contact patches. I'd sleep like a baby with those bearing stresses.
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