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一般起重用锻造卸扣(摘自JB/T 8112—1999) |
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材料：M(4)级别20 S(6)级别20Cr、20Mn2 T(8)级别35CrMo 标记示例： 销轴为W型、起重量20t的M(4)级D型卸扣(四种型式类同)，标记为： 卸扣M-DW20JB/T 8112—1999或卸扣4-DW20JB/T 8122—1999型号意义
销轴的几种型式
Z型：在不削弱卸扣强度的情况下，采用的其他形式的销轴 |
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起 重 量 /t |
D 形 卸 扣 的 尺 寸 /mm |
弓 形 卸 扣 的 尺 寸 /mm |
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|
强 度 级 别 |
d max |
D max |
W min |
S min |
M |
d max |
D max |
W min |
2 r min |
S min |
M |
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|
M(4) |
S(6) |
T(8) |
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|
— |
— |
0.63 |
8.0 |
9.0 |
18.0 |
M9 |
9.0 |
10.0 |
16.0 |
22.4 |
M10 |
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|
— |
0.63 |
0.8 |
9.0 |
10.0 |
20.0 |
M10 |
10.0 |
11.2 |
18.0 |
25.0 |
M11 |
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|
— |
0.8 |
1 |
10.0 |
11.2 |
22.4 |
M11 |
11.2 |
12.5 |
20.0 |
28.0 |
M12 |
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|
0.63 |
1 |
1.25 |
11.2 |
12.5 |
25.0 |
M12 |
12.5 |
14.0 |
22.4 |
31.5 |
M14 |
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|
0.8 |
1.25 |
1.6 |
12.5 |
14.0 |
28.0 |
M14 |
14.0 |
16.0 |
25.0 |
35.5 |
M16 |
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|
1 |
1.6 |
2 |
14.0 |
16.0 |
31.5 |
M16 |
16.0 |
18.0 |
28.0 |
40.0 |
M18 |
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|
1.25 |
2 |
2.5 |
16.0 |
18.0 |
35.5 |
M18 |
18.0 |
20.0 |
31.5 |
45.0 |
M20 |
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1.6 |
2.5 |
3.2 |
18.0 |
20.0 |
40.0 |
M20 |
20.0 |
22.4 |
35.5 |
50.0 |
M22 |
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|
2 |
3.2 |
4 |
20.0 |
22.4 |
45.0 |
M22 |
22.4 |
25.0 |
40.0 |
56.0 |
M25 |
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|
2.5 |
4 |
5 |
22.4 |
25.0 |
50.0 |
M25 |
25.0 |
28.0 |
45.0 |
63.0 |
M28 |
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3.2 |
5 |
6.3 |
25.0 |
28.0 |
56.0 |
M28 |
28.0 |
31.5 |
50.0 |
71.0 |
M30 |
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4 |
6.3 |
8 |
28.0 |
31.5 |
63.0 |
M30 |
31.5 |
35.5 |
56.0 |
80.0 |
M35 |
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5 |
8 |
10 |
31.5 |
35.5 |
71.0 |
M35 |
35.5 |
40.0 |
63.0 |
90.0 |
M40 |
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6.3 |
10 |
12.5 |
35.5 |
40.0 |
80.0 |
M40 |
40.0 |
45.0 |
71.0 |
100.0 |
M45 |
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8 |
12.5 |
16 |
40.0 |
45.0 |
90.0 |
M45 |
45.0 |
50.0 |
80.0 |
112.0 |
M50 |
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10 |
16 |
20 |
45.0 |
50.0 |
100.0 |
M50 |
50.0 |
56.0 |
90.0 |
125.0 |
M56 |
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12.5 |
20 |
25 |
50.0 |
56.0 |
112.0 |
M56 |
56.0 |
63.0 |
100.0 |
140.0 |
M62 |
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16 |
25 |
32 |
56.0 |
63.0 |
125.0 |
M62 |
63.0 |
71.0 |
112.0 |
160.0 |
M70 |
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|
20 |
32 |
40 |
63.0 |
71.0 |
140.0 |
M70 |
71.0 |
80.0 |
125.0 |
180.0 |
M80 |
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|
25 |
40 |
50 |
71.0 |
80.0 |
160.0 |
M80 |
80.0 |
90.0 |
140.0 |
200.0 |
M90 |
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|
32 |
50 |
63 |
80.0 |
90.0 |
180.0 |
M90 |
90.0 |
100.0 |
160.0 |
224.0 |
M100 |
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|
40 |
63 |
— |
90.0 |
100.0 |
200.0 |
M100 |
100.0 |
112.0 |
180.0 |
250.0 |
M110 |
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50 |
80 |
— |
100.0 |
112.0 |
224.0 |
M110 |
112.0 |
125.0 |
200.0 |
280.0 |
M125 |
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|
63 |
100 |
— |
112.0 |
125.0 |
250.0 |
M125 |
125.0 |
140.0 |
224.0 |
315.0 |
M140 |
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|
80 |
— |
— |
125.0 |
140.0 |
280.0 |
M140 |
140.0 |
160.0 |
250.0 |
355.0 |
M160 |
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|
100 |
— |
— |
140.0 |
160.0 |
315.0 |
M160 |
160.0 |
180.0 |
280.0 |
400.0 |
M180 |
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注：1.emax＝2.2Dmax 。 2.Emin为螺母厚度。 |
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