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Most often, a
drill chuck arbor has a longer end that is either a straight shank
or a male Morse Taper to fit into a drill press. The other, shorter
end of the arbor is a male Jacobs taper to fit into a drill chuck.
If a drill press has a non-removable male spindle, the taper is
usually 33 Jacobs Taper.
JACOBS TAPERS
JACOBS LARGE SMALL
TAPER# DIAMETER DIAMETER LENGTH
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0 .25000" .22844 .43750
1 .38400 .33341 .65625
2 .55900 .48764 .87500
2 short .54880 .48764 .75000
3 .81100 .74610 1.21875
4 1.12400 1.03720 1.65625
5 1.41300 1.31611 1.87500
6 .67600 .62409 1.00000
33 .62401 .56051 1.00000
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MORSE TAPERS
LARGE SMALL
MORSE DIAMETER DIAMETER
TAPER# (A) (B) LENGTH
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0 .35610" .25200 1-15/16
1 .47500 .36900 2-1/16
2 .70000 .57200 2-1/2
3 .93800 .77800 3-1/16
4 1.23100 1.02000 3-7/8
4-1/2 1.50000 1.26600 4-5/16
5 1.74800 1.47500 4-15/16
6 2.49400 2.11600 7
7 3.27000 2.75000 9-1/2
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BROWN + SHARPE TAPERS
(CALL Victor Machinery for B+S Tooling!)
LARGE SMALL
B+S DIAMETER DIAMETER
TAPER# (A) (B) LENGTH
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1 .23922" .20000 15/16
2 .29968 .25000 1-3/16
3 .37525 .31250 1-1/2
4 .40233 .35000 1-1/4
5 .52315 .45000 1-3/4
6 .59961 .50000 2-3/8
7 .72537 .60000 3
8 .89873 .75000 3-9/16
9 1.06705 .90010 4
10 1.28927 1.04465 5-11/16
11 1.53176 1.24995 6-3/4
12 1.79681 1.50010 7-1/8
13 2.07310 1.75005 7-3/4
14 2.34375 2.00000 8-1/4
15 2.61458 2.25000 8-3/4
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