Disassenmbled it and found the spindle is pitted from coolant that got past the seal and just laid in there. That is how mine was set up.
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Removing live center from mazak qt20 tailstock.
How to remove live center from tailstock. I hadnt worried too much about it though since ive been way to busy to do much turning. My cnc lathe came with a seized live center in the tailstock. Since i moved out to phoenix i havent been able to remove the live center that came with the lathe.
Insert the allen wrench into space between back of live center and front of the tailstock quill and turn. Stuck live center in my tailstock. Use a brass or aluminum dowel to punch out the center.
Easiest method for me is to dedicate an appropriately sized long handle allen wrench for a particular live center and use it to cam out the live center with a twisting motion. Help cant remove the live center. I take the quill out and grip the center and quill in a fist and tap with a drift and hammer.
Tap the shaft of the screwdriver lightly with a hammer and put pressure on the live centre by tensioning the screw until the live centre pops out. Note tighten the barrel lock first. Pops loose every time the pita part is fiddling with the quill lock to get it back in.
Unwind the lead screw and remove. So i would need a new spindle and complete set of bearings. The edge of the live center.
This takes all of 30 seconds. I have a serious problem with the tailstock on my delta 46 460. May have some crud or surface rust in the tailstock quill.
Backing the ram out will often pop the taper loose. Some of the subjects we touch on are. I finally got it out.
A shotgun bore brush with rod will help keep quill morse taper clean steel wool can help clean male morse tapers. Length to diameter ratio center drilling choosing a tailstock pressure dealing with fragile parts and choosing and maintaining your live center. If there is a hole through the end of the tailstock screw then find the knockout bar insert it into.
The front bearing a needle roller rides directly on the spindle. To remove a stuck center from the sb9 tailstock take a wrench and unwind the cap on the tailstock that the handwheel is attached to the stock with. Take your knockout rod and insert in 38 tailstock hole gently tap it out from the tailstock.
Replace the lead screw and handwheel. Keith zimmerman phoenix az greetings all.
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