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Tapers

Jacobs Morse Brown & Sharp

Tips for ordering drill chuck arbors:
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
---------------------------------------
  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
---------------------------------------

MORSE TAPERS

           LARGE      SMALL
MORSE     DIAMETER   DIAMETER
TAPER#      (A)        (B)       LENGTH
---------------------------------------
  0        .36510"    .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
---------------------------------------

BROWN & SHARP TAPERS

           LARGE      SMALL
 B+S      DIAMETER   DIAMETER
TAPER#      (A)        (B)       LENGTH
---------------------------------------
  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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Newman Tools Inc.
3422 Notre Dame West
Montreal, Quebec, Canada H4C 1P2
Phone: 1-514-931-2472 or 1-800-465-1384
Fax:1-514-931-6193 or 1-800-605-2442

Newman Tools Inc.
185 Iber Road
Stittsville, Ottawa, Ontario K2S 1E7
Phone: 1-800-465-1384
Fax: 1-800-605-2442

Newman Tools Inc.
151 New Park Avenue
Hartford, CT 06106, USA
Phone: 1-800-465-1384
Fax: 1-800-605-2442

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