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Morse Taper (MT) Dimensions Chart

MorseTaperDimensionsChart.pdf
(For the PDF file, K = B – L)

Taper# A D L B K
0 0.3561 0.2520 0.5625 2.3438 1.7813
1 0.4750 0.3690 0.7500 2.5625 1.8125
2 0.7000 0.5720 0.8750 3.1250 2.2500
3 0.9380 0.7780 1.1875 3.8750 2.6875
4 1.2310 1.0200 1.2500 4.8750 3.6250
5 1.7480 1.4750 1.5000 6.1250 4.6250
6 2.4940 2.1160 1.7500 8.5625 6.8125
7 3.2700 2.7500 2.6250 11.6250 9.0000

NOTE: At times, the female Morse Taper cavity in a machine may be slightly smaller than the maximum diameters shown above. This is because the MT tooling often extends a bit past the end of the spindle that is receiving the Morse Taper Tool.  For Instance, the “A” dimension for a MT2 female cavity may actually measure 0.695″ rather than 0.700″ in extreme cases, etc.  The differences in dimensions grow wider as you go from MT0 to MT7.

2 Responses to "Morse Taper (MT) Dimensions Chart"

Steve S

February 19, 2015 at 12:37 am

A nice chart but it’s functionality is limited because the “K” dimension isn’t shown in the chart–without it you have to go to extra steps to determine the angle of the taper.

AutoDrill

July 28, 2015 at 10:04 am

The “K” dimension was accidentally left off. Thankfully, it can be calculated by subtracting the “L” dimension from the “B” dimension.

We will fix the page soon, but for now, here are the missing values:

MT0: 1.7813
MT1: 1.8125
MT2: 2.2500
MT3: 2.6875
MT4: 3.6250
MT5: 4.6250
MT6: 6.8125
MT7: 9.0000

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