Recent content by tr888

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    A questions for tribologists re viscosity grades

    I'm just a layman trying to understand some information and a chart I'm reading about viscosity as it relates to practical lubrication choices. There's an article here at MachineryLubrication.com on how to choose the proper grease. First, I would like to make sure I am reading this chart...
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    Bearings for movement along a rod

    Thanks for the suggestion. Simpler than a rolling bearing. Does it have comparable lifetime? The shafts could be aluminum or stainless steel, about 5/16" to 1/2" (8mm-12mm) diameter. There would be a load of approximately 8 kilos sitting on the plate. I could use opposing bearings on either...
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    Bearings for movement along a rod

    If we wanted the rectangular plate to be able to move slowly up and down on the rods without binding, what would be an appropriate bearing to allow it to move smoothly on the rods?
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    Self-lubricating thrust washers and 4500 rpm shaft shaft

    Hey, Jim. Ignore that picture of the shaft collar with the set screws. I hadn't seen that saw in person. Turns out, it is a ball-bearing model, as you had surmised, which was offered in the same catalog year. The model I have has sleeve bearings only. Here's a picture of the quasi arbor...
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    Self-lubricating thrust washers and 4500 rpm shaft shaft

    FWIW, here is a picture from a similar saw showing the original shaft collar between the pulley and the sleeve bearing.
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    Self-lubricating thrust washers and 4500 rpm shaft shaft

    Thanks for that caveat. Would these Belleville bearing springs or finger disc springs keep the roller bearing sandwich pressed together? http://www.mcmaster.com/#bearing-springs/=idzaug
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    Self-lubricating thrust washers and 4500 rpm shaft shaft

    The width of the slot cut by the blade, i.e. the 'kerf', is 0.125" normally for ripping wood lengthwise along the grain and 0.075" for a thin-kerf blade for making fine cuts across the grain. The goal is to have repeatable cuts -- e.g. you might want to make a number of identical...
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    Self-lubricating thrust washers and 4500 rpm shaft shaft

    You're thinking plastic but I'm wondering if metal-to-metal would be ok. Here's my thinking, but it's totally based on assumption since I have not even had this saw hooked up to a motor yet. The porous bronze bearing is automatically lubricated with SAE20 oil from two tiny reservoirs above...
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    Self-lubricating thrust washers and 4500 rpm shaft shaft

    I don't need free but inexpensive would be good. :-) I don't want to have to keep replacing this spacer. What you you suggest if you had a few dollars to spend? P.S. I agree that much of the old equipment was built to last for several generations rather than several years. Loss of enduring...
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    Self-lubricating thrust washers and 4500 rpm shaft shaft

    I hope you all will permit a question from a non-scientist seeking some practical guidance on a vintage table saw restoration. I have a 1930s era table saw whose 5/8" shaft spins at 4500 rpm inside a porous bronze bearing that is lubricated with SAE 20 oil. On the motor pulley side of the...
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