Morse Taper Dimensions


The most common Taper in use on the Lathe is the Morse Taper.

Although there are many other types of Taper in use, these are generally for use in Mechanical and Precision Engineering Disciplines, such as Collet Chucks for Milling, and therefore not often encountered by the Woodturner.

Morse Taper Dimensions Table

The Standard Dimensions for the various Sizes of the Morse Taper Shank are given below.

Taper SizeØ D1Ø D2Taper/FtTaper/InchAngle AL
#10.4750″
12.065mm
0.3690″
9.373mm
0.5986″0.0499″1.4287°2.13″
54.10mm
#20.7000″
17.780mm
0.5720″
14.529mm
0.5994″0.0500″1.4307°2.56″
65.02mm
#30.9380″
23.825mm
0.7780″
19.761mm
0.6024″0.0502″1.4377°3.19″
81.06mm
#41.2310″
31.267mm
1.0200″
25.908mm
0.6233″0.0519″1.4876°4.06″
103.12mm
#51.7480″
44.399mm
1.4750″
37.465mm
0.6315″0.0526″1.5073°5.19″
131.83mm
#62.4940″
63.348mm
2.1160″
53.746mm
0.6257″0.0521″1.4933°7.25″
184.15

All dimensions are in inches with Metric [mm] equivalents for major dimensions.

D1 = Large End of Taper Diameter.

D2 = Small End of Taper Diameter.

A  = Angle of Taper.

L  = Length of Morse Taper Section.

The Overall Length of the Morse Taper will depend on individual designs from the Manufacturers. 

Morse Taper Dimensions in Image Format

Here’s the same table as above but in image format for easier sharing/printing:

Morse Taper Dimensions Table

Checking the Morse Taper Size

The following is a video on how to measure your morse taper by after removing the chuck of the drill press:

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