Parameters of Standard-taper Shank


(Figure 1)Tension Taper of Bolt


(Figure 2)JIS taper

   
. Table 1
Type
D1
D2
t1
t2
t3
t5
d1
D3
L
g
d5
BT35
53
43
20
10
13.0
2
38.1
13
56.5
M12 *1.75
21.62
BT40
63
53
25
10
16.6
2
44.45
17
65.4
M16 *2
25.3
BT45
85
73
30
12
21.2
3
57.15
21
82.8
M20 *25
33.1
BT50
100
85
35
15
23.2
3
69.85
25
161.8
M24 *3
40.1
BT60
155
135
45
20
28.2
3
107.95
31
101.8
M30 *3.5
60.7
. Table 2
NT
D1
d1
L
L1
g
L2
L3
d3
L4
D2
L5
Metric thread
Whitworth thread
30
31.75
17.4
70
50
M12
W
24
50
16.5
6
50
8
40
44.45
25.3
95
67
M16
W5/8
30
70
24
7
63
10
50
69.85
39.6
130
105
M24
W1
45
90
38
11
100
13
60
107.95
60.2
210
165
M30
W1
56
110
58
12
170
15


(Figure 3) Morse taper(with flat-tail shank )

 


(Figure 4) Morse taper(with thread shank )

 
. (Table 3) With flat-tail shank

Morse taper No

D
a
D1
d1
d2
L1
L2
b
c
e
R
r
0
9.045
3.0
9.201
6.104
6.0
56.5
59.5
3.9
6.5
10.5
4
1.0

12927

1
12.065
3.5
12.240
8.972
8.7
62.0
65.5
5.2
8.5
13.5
5
1.2
12543
2
17.780
5.0
18.030
14.034
13.5
75.0
80.0
6.3
10.0
16.0
6
1.6
12550
3
23.825
5.0
24.076
19.107
18.5
94.0
99.0
7.9
13.0
20.0
7
2.0
12616
4

31.267

6.5
31.605
25.164
24.5
117.5
124.0
11.9
16.0
24.0
8
2.5
12915
5
44.399
6.5
44.741
36.531
35.7
149.5
156.0
15.9
19.0
29.0
10
3.0
13026
6
63.348
8.0
63.765
52.399
51.0
210.0
218.0
19.0
27.0
40.0
13
4.0
12936
7
83.058
10.0
83.578
68.185
66.8
286.0
296.0
28.6
35.0
54.0
19
5.0
12922
. (Table 4)With thread shank

Morse taper No

D
a
D1
d
d1
L1
L2
t
r
d2
K
0
9.045
3.0
9.201
6.442
6.0
50.0
53
4.0
0.2
-
-
12927
1
12.065
3.5
12.240
9.396
9.0
53.5
57
5.0
0.2
M6

16
12543
2
17.780
5.0
18.030
14.583
14.0
64.0
69
5.0
0.2
M10
24
12550
3
23.825
5.0
24.076
19.759
19.0
81.0
86
7.0
0.6
M12
28
12616
4
31.267
6.5
31.605
25.943
25.0
102.5
109
9.0
1.0
M16
32
12915
5
44.399
6.5
44.741
37.584
35.7
129.5
136
9.0
2.5
M20
40
13026
6
63.348
8.0
63.765
53.859
51.0
182.0
190
12.0
4.0
M24
50
12936
7
83.058
10.0
83.578
70.052
65.0
250.0
260
5.0
M33
80
12922
 
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