Big discounting Stuffing box and shaft sleeves and FPL insert to Bolivia Manufacturers
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I had to replace the motor on an old vacuum pump for my record cutting lathe. The replacement motor I found on Craigslist rotated in the wrong direction (CW not CCW). I discovered it was possible to reverse direction of the motor by swapping 2 wires inside. This may only work with really old electric motors like this one that have separate starting coils and run coils.
Also, the replacement motor ran too fast so I installed an intermediate shaft and did a pulley reduction to get the replacement motor closer to the RPM of the motor that died.
The replacement motor also has a variable pulley installed (that was stuck in it’s current position) but it could also be adjusted if I needed to get the overall RPM with belt reduction closer to the desired speed. A variable pulley is interesting in that there are two plates with angled faces pointing toward each other that when adjusted together closer, cause the belt to see a larger diameter pulley, and when adjusted further apart the belt sees a smaller diameter pulley.
One thing to note is that I intentionally left the belts loose since the intermediate shaft only has brass bushings not bearings – but I used what I had on hand.
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By Ricardo 2015-11-03 12:07
Adhering to the business principle of mutual benefits, we have a happy and successful transaction, we think we will be the best business partner.
By Edward 2016-2-27 17:52