Anew drill chuck and Morse taper arbour purchased recently arrived on my doorstep in two pieces, photo 1, But not to worry. Assembly is a simple matter using the most basic of tools, photo 2, and the job has since proved both accurate and surprisingly sturdy. Two different tapers make up the typical drill chuck arbour. The longer end is a Morse taper that must fit into your lathe tailstock or drill press spindle. In the case of The Flagellator, my 1937 Drummond M-type lathe, this is a smallish No. 1 Morse taper. Later Myfords and Far Eastern mini-lathes will take the larger No.2 Morse taper here. The arbour's other, shorter, taper is usually a Jacobs taper, designated in this case a )T2. Or it might be a more modern DIN standard taper designated as a B12 or such. In any case, it must be the same taper as the hole in the chuck body. Often this is marked on the body, and usually on the packaging it comes in.
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