SIEMENS
FLENDER Standard Couplings
Appendix
15/3
Siemens MD 10.1 · 2015
Parallel key connections
15
■
Overview
Parallel key connections to DIN 6885-1
For moderate operating conditions, the hub keyway tolerance
JS9 is recommended.
In harsh operating conditions or during reversing operation,
the keyway width tolerance P9 must be preferred.
With two parallel keyways, the keyway width tolerance JS9
should be specified in order to simplify the assembly.
The shaft keyway width has to be specified with the
tolerance N9.
Ø
D+T2
T1
H
T2
Ø
D
B
G_MD10_XX_00172
Diameter
Keyway
width
Parallel key
height
Shaft keyway
depth
Hub keyway
depth
Deviation for
shaft and hub
keyway depth
Deviation table for keyway width B
over
to
D
B
H
T1
T2
JS9
P9
mm
mm
mm
mm
mm
mm
mm
μm
μm
10
3
3
1.8
1.4
+0.1
+12.5
–6
–12.5
–31
10
12
4
4
2.5
1.8
+0.1
+15
–12
–15
–42
12
17
5
5
3
2.3
+0.1
+15
–12
–15
–42
17
22
6
6
3.5
2.8
+0.1
+15
–12
–15
–42
22
30
8
7
4
3.3
+0.2
+18
–15
–18
–51
30
38
10
8
5
3.3
+0.2
+18
–15
–18
–51
38
44
12
8
5
3.3
+0.2
+21.5
–18
–21.5
–61
44
50
14
9
5.5
3.8
+0.2
+21.5
–18
–21.5
–61
50
58
16
10
6
4.3
+0.2
+21.5
–18
–21.5
–61
58
65
18
11
7
4.4
+0.2
+21.5
–18
–21.5
–61
65
75
20
12
7.5
4.9
+0.2
+26
–22
–26
–74
75
85
22
14
9
5.4
+0.2
+26
–22
–26
–74
85
95
25
14
9
5.4
+0.2
+26
–22
–26
–74
95
110
28
16
10
6.4
+0.2
+26
–22
–26
–74
110
130
32
18
11
7.4
+0.2
+31
–26
–31
–88
130
150
36
20
12
8.4
+0.3
+31
–26
–31
–88
150
170
40
22
13
9.4
+0.3
+31
–26
–31
–88
170
200
45
25
15
10.4
+0.3
+31
–26
–31
–88
200
230
50
28
17
11.4
+0.3
+31
–26
–31
–88
230
260
56
32
20
12.4
+0.3
+37
–32
–37
–106
260
290
63
32
20
12.4
+0.3
+37
–32
–37
–106
290
330
70
36
22
14.4
+0.3
+37
–32
–37
–106
330
380
80
40
25
15.4
+0.3
+37
–32
–37
–106
380
440
90
45
28
17.4
+0.3
+43.5
–37
–43.5
–124
440
500
100
50
31
19.4
+0.3
+43.5
–37
–43.5
–124
© Siemens AG 2015