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Well the noise stopped along with our table
So will have to see what happened
can you let me know what the bearing size are for the shaft I have everything off. Bearings are just torn apart not sure what bearings to buy. Thank youThe table drive system is a real weak link on a Blanchard. Under the saddle, there is a set of spiral bevel gears that drive a pinion gear that turns the chuck. Those gears have their own oil reservoir and they usually fill up with coolant or anything but oil.
Typically, I figure on replacing the input shaft, bearings, bevel gears, pinion gear, pinion gear bushing, felt wick, and all nuts, washer, keys and gaskets. These parts are not cheap. It's not an easy job either. You have to lift the chuck off. You have to pull the drive shaft cover back and unhook the shaft. Then pull the input shaft out the end. Then the pinion gear shaft goes out the bottom. If you have an integral coolant tank, there is usually no issue doing that. If you have a separate tank and there is very little space under the saddle, you have to lift the whole saddle up which is a large job requiring you to remove the water guards and disassemble the ways.
I've probably done a dozen or more. It takes me maybe 6-8 hours for a simple one and twice that for one that fights me (drilling out all the screws and chiseling off inches of crusty build up). If you have to lift the saddle, add another 6+ hours.
I have seen broken teeth on the chuck drive gear before, but it rare. That will require scraping a new gear to match the bearing surface in the saddle.
Also, the drive gear boxes occasionally fail, but if it make a racket in all gears, it's not likely to be the issue.
Attached is the view from the parts manual.
View attachment 227463
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