公制键 BS 46-1-1958 英制键槽尺寸规格
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Statement
Keyway Chart
Metric – Rectangular
B.S.4235 : PART 1 : 1972
The following tables show standard
dimensions for keys and their grooves.
Nominal
Shaft Diam Key
Size
Dimensions (mm)
Over
To
(incl.)
A B C D E F R
10 12 4 x 4
3.970
4.000
2.5
2.6
3.985
4.015
1.8
1.9
4.030
3.970
0.16 12 17 5 x 5
4.970
5.000
3.0
3.1
4.985
5.015
2.3
2.4
5.030
4.970
0.25 17 22 6 x 6
5.970
6.000
3.5
3.6
5.985
6.015
2.8
2.9
6.030
5.970
0.25 22 30 8 x 7
7.964
8.000
4.0
4.2
7.982
8.018
3.3
3.5
8.000
7.964
7.000
6.910
0.25 30 38
10 x
8
9.964
10.000
5.0
5.2
9.982
10.018
3.3
3.5
10.000
9.964
8.000
7.910
0.40 38 44
12 x
8
11.957
12.000
5.0
5.2
11.979
12.021
3.3
3.5
12.000
11.957
8.000
7.910
0.40 44 50
14 x
9
13.957
14.000
5.5
5.7
13.979
14.021
3.8
4.0
14.000
13.957
9.000
8.910
0.40 50 58
16 x
10
15.957
16.000
6.0
6.2
15.979
16.021
4.3
4.5
16.000
15.957
10.000
9.910
0.40 58 65
18 x
11
17.957
18.000
7.0
7.2
17.979
18.021
4.4
4.6
18.000
17.957
11.000
10.890
0.40 65 75
20 x
12
19.948
20.000
7.5
7.7
19.974
20.026
4.9
5.1
20.000
19.948
12.000
11.890
0.60 75 85
22 x
14
21.948
22.000
9.0
9.2
21.974
22.026
5.4
5.6
22.000
21.948
14.000
13.890
0.60 85 95
25 x
14
24.948
25.000
9.0
9.2
24.974
25.026
5.4
5.6
25.000
24.948
14.000
13.890
0.60 95 110
28 x
16
27.948
28.000
10.0
10.2
27.974
28.026
6.4
6.6
28.000
27.948
16.000
15.890
0.60 110 130
32 x
18
31.938
32.000
11.0
11.2
31.969
32.031
7.4
7.6
32.000
31.938
18.000
17.890
0.60