Machinery's Handbook, 31st Edition
1020 Standard Tapers Table 6. ANSI Standard Steep Machine Tapers ANSI/ASME B5.10-1994 (R2013)
Dia. at Gage Line b
Taper per Foot a 3.500 3.500 3.500 3.500 3.500 3.500
Length Along Axis
Dia.at Gage Line b
Length Along Axis
Taper per Foot a 3.500 3.500 3.500 3.500 3.500 3.500
No. of Taper
No. of Taper
5
0.500 0.6875 0.625 0.8750 0.750 1.0625 0.875 1.3125 1.000 1.5625 1.250 1.8750
35 40 45 50 55 60
1.500 2.2500 1.750 2.5625 2.250 3.3125 2.750 4.0000 3.500 5.1875 4.250 6.3750
10 15 20 25 30
a This taper corresponds to an included angle of 16 ° , 35 ′ , 39.4 ″ . b The basic diameter at gage line is at large end of taper. All dimensions given in inches.
The tapers numbered 10, 20, 30, 40, 50, and 60 that are printed in heavy-faced type are designated as the “Preferred Series.” The tapers numbered 5, 15, 25, 35, 45, and 55 that are printed in light- faced type are designated as the “Intermediate Series.” Table 7a. American National Standard Self-holding Tapers — Basic Dimensions ANSI/ASME B5.10-1994 (R2013) No. of Taper Taper per Foot Dia. at Gage Line a A Means of Driving and Holding a Origin of Series
.239 0.50200 0.23922 .299 0.50200 0.29968 .375 0.50200 0.37525 1 0.59858 0.47500
Brown & Sharpe Taper Series
Tang Drive With Shank Held in by Friction (See Table 2)
2 3 4 5 6 7
0.59941 0.70000 0.60235 0.93800 0.62326 1.23100 0.62400 1.50000 0.63151 1.74800 0.62565 2.49400 0.62400 3.27000 0.750 2.000 0.750 2.500 0.750 3.000 0.750 3.500 0.750 4.000 0.750 4.500 0.750 5.000 0.750 6.000 0.750 8.000 0.750 10.000
Morse Taper Series
4 1 ⁄
2
Tang Drive With Shank Held in by Key (See Table 3)
200 250 300 350 400 450 500 600
Key Drive With Shank Held in by Key (See Table 4)
4 Inch per Foot Taper Series
3 ⁄
Key Drive With Shank Held in by Draw-bolt (See Table 5)
800 1000 1200
0.750 12.000 a See illustrations above Table 2 through Table 5. All dimensions given in inches.
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