HTD 3MM pitch sources


Belt and pulleys

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Atlas TH54 Lathe apron assembly

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 Ronald Crowell Since you are new to this group, I'll assume you might find some info useful as follows. •1.a. The bearing stanchion has a shim under it so that its miter gear body will center on the lead screw for least drag. The 'U' shim (in the diagram, goes around the stanchion bolt) thickness must be determined for your new bearing stanchion. Note: It will not be necessary to repin the bearing stanchion to the apron with the original dowel pins, and in fact repinning it will likely locate it a small amount high or low causing it to drag on the screw. Leave the dowels out. •1b. So...first make sure your lead screw is straight and level (constant distance under and out) with the lathe bed ways and is the same distance its full length. Then, when the apron is bolted to the carriage and the bearing stanchion/miter gear assembly is loosely bolted to the back of the apron, move the carriage all the way to the left where the screw is least flexible and let the screw locate th...
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954 bronze

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