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Your cart is empty.PRECISION BULL NOSE LIVE REVOLVING CENTER CAPACITY : 1/2" to 2.1/2"" - 60 degree SIZE: MORSE TAPER 3 - MT 3 Description:- Ideal for holding pipe and hollow work, Large Diameter Centers, cored holes and for tube work Preloaded well greased multi bearings to achieve good thrust and radial capacities. While regreasing, use only the high class bearing grease/oil through the grease nipples provided in the tail and on the body of the Revolving Center. Head Made from heat treated hardened high carbon alloy steel Head hardened to 55-60 HRC Holding Capacity - 1/2" - 2.1/2" OTHERS SIZES IN STOCK.
Customer
2025-03-28 17:35:55
This has been an invaluable tool, Id definitely recommend it if you turn large diameter tube
R. Fogarty
2025-01-05 12:51:01
This is for the Bull Nose Live Center with the #3 Morse Taper. When I first installed this center on my 1956, 13" South Bend lathe, fully retracting the tailstock quill will not dislodge this live center for removal. At first I couldn't figure out why fully retracting the tailstock quill would not loosen the center. Then I realized that the quill was bottoming out in the fully retracted position before the quill screw hit the rear of the center and tapped it loose. Then came the fun of trying to get it loose without damaging the rear face of the center by tapping on it with a brass bar or some other more drastic idea. Finally, I disassembled the quill screw assembly so I could tap the rear of the live center from the rear of the quill and dislodge it that way. Some sleuthing lead to the discovery that the part of the Morse taper that provides the taper lock (about 3.19 inches long) is positioned too far towards from the rear of the shaft which keeps the rear end of the center shaft from hitting the quill screw for removal. Here's a couple of options. On this live center shaft, move the Morse taper dimensions closer to the head of the live center which would allow the end of the shaft to go deeper into the tailstock quill before it locks into place. Or, add more length to the end of the shaft behind the Morse taper section so it will make contact with the tailstock quill screw before the quill bottoms out. If you have an older lathe like mine, do not set this live center in the tailstock quill with a hefty shove before making sure that you have enough thread length on your quill screw to dislodge it before you run out of threads and the quill bottoms out. This live center will seat and be almost impossible to remove by putting pressure on the rear face of the live center bearing housing. I had to disassemble my tailstock quill assembly so I could remove the quill screw and access the tailstock from the rear with a bar to rap the end of the live center to remove it. The fix on my South Bend was to machine a spacer 3/4" long and a diameter that would fit past the smallest part of the quill taper so it would rest against the end of the quill screw. Now, with the plug in the quill between the quill screw and the end of the live center, I now have enough thread length on the quill screw to twist the quill screw handle far enough to dislodge the live center from the quill. Make the spacer out of ferrous metal so a magnet can be used to remove the spacer from the inside of the quill when it's not needed.
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