Shanks BT
MAS BT (ISO 7388-2-J)
IS:11173 (Part 1)
Other Shanks
DIN 69871 (ISO 7388-1-A/U)
DIN 2080 - IS 2340
ISO 12164-1(DIN 69893-1)HSK
CAT ANSI / ASME B5.50
(All dimensions are in mm)
|
BT No. |
D |
L ±0.2 |
d1 H8 |
G |
D1 h8 |
f ±0.2 |
v ±0.1 |
w |
y ±0.4 |
t -0.2 |
b H12 |
|
|
30 |
31.75 |
48.4 |
12.5 |
M12 |
46 |
20 |
13.6 |
8 |
2 |
16.3 |
16.1 |
|
|
35 |
38.10 |
56.4 |
12.5 |
53 |
22 |
14.6 |
10 |
19.6 |
||||
|
40 |
44.45 |
65.4 |
17 |
M16 |
63 |
25 |
16.6 |
22.6 |
||||
|
45 |
57.15 |
82.8 |
21 |
M20 |
85 |
30 |
21.2 |
12 |
3 |
29.1 |
19.3 |
|
|
50 |
69.75 |
101.8 |
25 |
M24 |
100 |
35 |
23.2 |
15 |
35.4 |
25.7 |
||
CONE TOLERANCE AT3
|
Material
Heat Treatment |
Carburizing Alloy Steel |
|
Surface Hardness HRc 58±2 |
|
|
Case Depth 0.6-1.0 mm @ HV1 550 |
|
|
Tensile Strength 1000 MPa Minimum |
|
BT No. |
'α' Basic |
Tolerance Grade AT3 |
|
|||||
|
Generating Angle Limits α/2 |
AT α/2 Secs |
AT α/2 µ Rads |
L |
ATD (D1 ~D2) |
||||
|
Min |
Max |
|||||||
|
30 |
16º35'39.4" |
8º17'51.2" |
8º17'57.7" |
6.5 |
31.5 |
42 |
0.0026 |
|
|
35 |
8º17'52.7" |
8º17'57.7" |
5 |
31.5 |
53 |
0.0033 |
|
|
|
40 |
8º17'51.2" |
8º17'56.2" |
5 |
20.0 |
59 |
0.0024 |
|
|
|
45 |
8º17'52.2" |
8º17'56.2" |
4 |
15.75 |
74 |
0.0030 |
|
|
|
50 |
8º17'50.7" |
8º17'54.7" |
4 |
15.75 |
92 |
0.0029 |
|
|
