If you had a largish lathe (18"x72") but didnt know the MT # of the tailstock, how would you go about figuring out what it is? I need to get a new live center, want to get the right MT.
Thanks for any info.
If you had a largish lathe (18"x72") but didnt know the MT # of the tailstock, how would you go about figuring out what it is? I need to get a new live center, want to get the right MT.
Thanks for any info.
Table on page 906 of Machinery Handbook has the specs. If you don't have this, give us the diameter at the small end of the taper, diameter at large end, and distance between the two diameters.
Karl
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Hey Greg,
Scott Logan has some good stuff at
and in particular
or closer at
The following is an excerpt from that last site
Taper Name Large Taper/ Taper/ Angle Small Length End Foot Inch From End Center
----------------------------------------------------------------------- #0 Morse 0.3561 .6246 .0521 1.4908 0.2520 2.00 #1 Morse 0.4750 .5986 .0499 1.4287 0.3690 2.13 #2 Morse 0.7000 .5994 .0500 1.4307 0.5720 2.56 #3 Morse 0.9380 .6024 .0502 1.4377 0.7780 3.19 #4 Morse 1.2310 .6233 .0519 1.4876 1.0200 4.06 #4-1/2 Morse 1.5000 .6240 .0520 1.4894 1.2660 4.50 #5 Morse 1.7480 .6315 .0526 1.5073 1.4750 5.19 #6 Morse 2.4940 .6257 .0521 1.4933 2.1160 7.25 #7 Morse 3.2700 .6240 .0520 1.4894 2.7500 10.00
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I would measure just the diameter of the visible opening of the tailstock quill, and pick the closest one form the column "Large End".
18" lathe is at least a MT-4, and probably an MT-5Take care.
Brian Lawson, Bothwell, Ontario.
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