|
不带护锥的（A型）中心钻 (摘自GB/T 6078.1—1998) (mm) |
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|
|
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|
d |
d1 |
l |
l1 |
|
(0.50) |
3.15 |
31.5 |
0.8～1.0 |
|
(0.63) |
3.15 |
31.5 |
0.9～1.2 |
|
(0.80) |
3.15 |
31.5 |
1.1～1.5 |
|
1.00 |
3.15 |
31.5 |
1.3～1.9 |
|
(1.25) |
3.15 |
31.5 |
1.6～2.2 |
|
1.60 |
4.00 |
35.5 |
2.0～2.8 |
|
2.00 |
5.00 |
40.0 |
2.5～3.3 |
|
2.50 |
6.30 |
45.0 |
3.1～4.1 |
|
3.15 |
8.00 |
50.0 |
3.9～4.9 |
|
4.00 |
10.00 |
56.0 |
5.0～6.2 |
|
(5.00) |
12.50 |
63.0 |
6.3～7.5 |
|
6.30 |
16.00 |
71.0 |
8.0～9.2 |
|
(8.00) |
20.00 |
80.0 |
10.1～11.5 |
|
10.00 |
25.00 |
100.0 |
12.8～14.2 |
