Machinery's Handbook, 31st Edition
1018
Standard Tapers Table 4. American National Standard Nose Key Drive with Keeper Key Slot, Self-Holding Tapers ANSI/ASME B5.10-1994 (R2013)
V
T
N ”
R ” R ”
B ”
C
U
R/2
Q
D ”
A R
A
N ”
I I ”
S ” Y
N
D
D
S
S ”
O P
Z M
Gage Line
W
X
Gage Line
AE AE
Taper 1 3/4 in. per Ft.
Taper
A (1)
C
Q
I
R
S
B ′
I ′
200 250 300 350 400 450 500 600
2.000 2.500 3.000 3.500 4.000 4.500 5.000 6.000 8.000 10.000 12.000
5.13 5.88 6.63 7.44 8.19 9.00 9.75 11.31 14.38 17.44 20.50 0.375 0.375 0.375 0.375 D ′ a 0.375 0.500 0.500 0.500 0.500
0.25 0.25 0.25 0.31 0.31 0.38 0.38 0.44 0.50 0.63 0.75 1.56 1.56 1.56 2.00 X 2.25 2.44 2.63 3.00 4.00 4.75 5.75
1.38 1.38 1.63 2.00 2.13 2.38 2.50 3.00 3.50 4.50 5.38
1.63 2.06 2.50 2.94 3.31 3.81 4.25 5.19
1.010 1.010 2.010 2.010 2.010 3.010 3.010 3.010 4.010 4.010 4.010
0.562 0.562 0.562 0.562 0.562 0.812 0.812 0.812 1.062 1.062 1.062 4.75 5.50 6.25 6.94 7.69 8.38 9.13 10.56 13.50 16.31 19.00 T
Min. 0.003 Max. 0.035 for all sizes
800 1000 1200 Taper
7.00 8.75 10.50 1.000 1.000 2.000 2.000 R ′ 2.000 3.000 3.000 3.000 4.000 4.000 4.000
W
N ′
S ′
D
200 250 300 350 400 450 500 600
1.41 1.66 2.25 2.50 2.75 3.00 3.25 3.75 4.75
3.44 3.69 4.06 4.88 5.31 5.88 6.44 7.44
0.656 0.781 1.031 1.031 1.031 1.031 1.031 1.281 1.781 2.031 2.031
0.50 0.50 0.50 0.50 0.50 0.75 0.75 0.75 1.00 1.00 1.00 2.00 2.25 2.63 3.00 Y 3.25 3.63 4.00 4.63 5.75 7.00 8.25
800 1000 1200 Taper
9.56 11.50 13.75 4.50 5.19 5.94 6.75 7.50 8.00 8.75 10.13 M 12.88 15.75 18.50
… … … …
U
V
N
O
P
Z
200 250 300 350 400 450 500 600
1.81 2.25 2.75 3.19 3.63 4.19 4.63 5.50
1.00 1.00 1.00 1.25 1.25 1.50 1.50 1.75 2.00 2.50 3.00
0.656 0.781 1.031 1.031 1.031 1.031 1.031 1.281 1.781 2.031 2.531
1.56 1.94 2.19 2.19 2.19 2.75 2.75 3.25 4.25 5.00 6.00
0.94 1.25 1.50 1.50 1.50 1.75 1.75 2.06 2.75 3.31 4.00
1.69 1.69 1.69 2.13 2.38 2.56 2.75 3.25 4.25 5.00
800 1000 1200
7.38 9.19 11.00
6.00 a Thread is UNF-2B for hole; UNF-2A for screw. (1) See Table 7b for plug and ring gage dimensions. All dimensions are in inches. AE is 0.005 greater than one-half of A . Width of drive key R ″ is 0.001 less than width R ″ of keyway. Tolerances: For diameter A of hole at gage line, +0, - 0.002; for diameter A of shank at gage line, +0.002, - 0; for width of slots N and N ′ , +0.008, - 0; for width of drive keyway R ′ in socket, +0, - 0.001; for width of drive keyway R in shank, 0.010, - 0; for centrality of slots N and N ′ with center line of spindle, 0.007; for centrality of keyway with spindle center line: for R , 0.004 and for R ′ , 0.002 T.I.V. On rate of taper, see footnote in Table 2. Two-decimal dimensions, ± 0.010 unless otherwise specified.
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