半圆键型式尺寸(GB/T1099-1979) (mm)
标记示例:
半圆键b=6mm、h=10mm、d1=25mm, 标记: 键 6×25 GB/T 1099-1979
键宽b
|
高度h
|
直径d1
|
L≈
|
C
|
每1000件的质量kg≈
|
公称尺寸
|
极限偏差
(h9)
|
公称尺寸
|
极限偏差
(h11)
|
公称尺寸
|
极限偏差
(h12)
|
最小
|
最大
|
1.0
|
0
-0.025
|
1.4
|
0
-0.060
|
4
|
0
-0.120
|
3.9
|
0.16
|
0.25
|
0.031
|
1.5
|
2.6
|
7
|
0
-0.150
|
6.8
|
0.153
|
2.0
|
2.6
|
7
|
6.8
|
0.204
|
2.0
|
3.7
|
0
-0.075
|
10
|
9.7
|
0.414
|
2.5
|
3.7
|
10
|
9.7
|
0.518
|
3.0
|
5.0
|
13
|
0
-0.180
|
12.7
|
1.10
|
3.0
|
6.5
|
0
-0.090
|
16
|
15.7
|
1.80
|
4.0
|
0
-0.030
|
6.5
|
16
|
15.7
|
0.25
|
0.40
|
2.40
|
4.0
|
7.5
|
19
|
0
-0.210
|
18.6
|
3.27
|
5.0
|
6.5
|
16
|
0
-0.180
|
15.7
|
3.01
|
5.0
|
7.5
|
19
|
0
-0.210
|
18.6
|
4.09
|
5.0
|
9.0
|
22
|
21.6
|
5.73
|
6.0
|
9.0
|
22
|
21.6
|
6.88
|
6.0
|
10.0
|
25
|
24.5
|
8.64
|
8.0
|
0
-0.036
|
11.0
|
0
-0.110
|
28
|
27.4
|
0.40
|
0.60
|
14.1
|
10.0
|
13.0
|
32
|
0
-0.250
|
31.4
|
19.3
|
半圆键和键槽的截面尺寸及公差 (摘自GB/T1098-1979) (mm)
注:在工作图中,键槽深用t或(d-t)标注,轮毂槽深用(d+t1)标注
轴径d
|
键
|
键 槽
|
键传递转矩
|
键定位用
|
公称尺寸
b×h×d1
|
宽度 b
|
深度
|
半径
r
|
公称
尺寸
|
极限偏差
|
轴t
|
毂t1
|
一般键联结
|
较紧键联结
|
轴(N9)
|
毂(Js9)
|
轴和毂
(P9)
|
公称
尺寸
|
极限
偏差
|
公称
尺寸
|
极限
偏差
|
最小
|
最大
|
自3~4
|
自3~4
|
1.0×1.4×4
|
1.0
|
-0.004
-0.029
|
±0.012
|
-0.006
-0.031
|
1.0
|
+0.1
0
|
0.6
|
+0.1
0
|
0.08
|
0.16
|
>4~5
|
>4~6
|
1.5×2.6×7
|
1.5
|
2.0
|
0.8
|
>5~6
|
>6~8
|
2.0×2.6×7
|
2.0
|
1.8
|
1.0
|
>6~7
|
>8~10
|
2.0×3.7×10
|
2.0
|
2.9
|
1.0
|
>7~8
|
>10~12
|
2.5×3.7×10
|
2.5
|
2.7
|
1.2
|
>8~10
|
>12~15
|
3.0×5.0×13
|
3.0
|
3.8
|
+0.2
0
|
1.4
|
>10~12
|
>15~18
|
3.0×6.5×16
|
3.0
|
5.3
|
1.4
|
0.16
|
0.25
|
>12~14
|
>18~20
|
4.0×6.5×16
|
4.0
|
0
-0.030
|
±0.015
|
-0.012
-0.042
|
5.0
|
1.8
|
>14~16
|
>20~22
|
4.0×7.5×19
|
4.0
|
6.0
|
1.8
|
>16~18
|
>22~25
|
5.0×6.5×16
|
5.0
|
4.5
|
2.3
|
>18~20
|
>25~28
|
5.0×7.5×19
|
5.0
|
5.5
|
2.3
|
>20~22
|
>28~32
|
5.0×9.0×22
|
5.0
|
7.0
|
2.3
|
>22~25
|
>32~36
|
6.0×9.0×22
|
6.0
|
6.5
|
+0.3
0
|
2.8
|
>25~28
|
>36~40
|
6.0×10.0×25
|
6.0
|
7.5
|
2.8
|
+0.2
0
|
0.25
|
0.40
|
>28~32
|
40
|
8.0×11.0×28
|
8.0
|
0
-0.036
|
±0.018
|
-0.015
-0.051
|
8.0
|
3.3
|
>32~38
|
-
|
10.0×13.0×32
|
10.0
|
10.0
|
3.3
|
注: (d-t) 和 (d+t1)两个组合尺寸的极限偏差按相应t和t1 极限偏差选取,但(d-t)极限偏差值应取负号。