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Series RAK
▶ angle of rotation: 90 - 270 ° ▶ Rotary wing drive, double-acting ▶ axis geometry: single
 
Ambient temperature min./max. +5°C / +60°C
Medium temperature min./max. +5°C / +60°C
Medium Compressed air
Max. particle size 5 µm
Oil content of compressed air 0 mg/m³ - 1 mg/m³
Theoretical torque at 6 bar

Materials:
Housing  Aluminum,  painted/powder-coated
Seals  Acrylonitrile Butadiene Rubber
Axis  Stainless steel
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Data sheet

Operating Instructions
Technical Remarks
The pressure dew point must be at least 15 °C under ambient and medium temperature and may not exceed 3 °C.
The oil content of air pressure must remain constant during the life cycle.
Use only the approved oils from Bosch Rexroth, see chapter „Technical information“.

Frame size   RAK - 6S RAK - 6D RAK - 7S RAK - 7D RAK - 8S
Axis diameter [mm] 12 12 17 17 25
Max. permissible axial bearing load [N] 44.1 44.1 88.2 88.2 147
Max. permissible radial bearing load [N] 588 588 1176 1176 1960
Interior volume [cm³] 51 42 146 127 283
Repetitive precision [°] 3 3 3 3 3
Theoretical torque [Nm] 5.9 12.8 18 41.5 34.5
Permissible kinetic energy [J] 0.049 0.049 0.225 0.225 1.078
Version   Single vane Double vane Single vane Double vane Single vane
Frame size   RAK - 8D        
Axis diameter [mm] 25        
Max. permissible axial bearing load [N] 147        
Max. permissible radial bearing load [N] 1960        
Interior volume [cm³] 244        
Repetitive precision [°] 3        
Theoretical torque [Nm] 83        
Permissible kinetic energy [J] 1.078        
Version   Double vane        

Frame size
Compressed air connection
angle of rotation
Swivel time

min./max.
Working pressure min./max.
Maximum operating frequency
Weight
Part No.
 
 
[°]
[s]
[bar]
[1/min]
[kg]
 
RAK - 6S
G 1/8
 180
0.16 / 1.6
2 / 10
90
0.79
 270
0.25 / 2.5
60
0.73
RAK - 6D
G 1/8
 90
0.08 / 0.8
2 / 10
180
0.82
RAK - 7S
G 1/4
 180
0.24 / 2.4
2 / 10
80
1.9
 270
0.36 / 3.6
50
1.7
RAK - 7D
G 1/4
 90
0.12 / 1.2
2 / 10
120
2
RAK - 8S
G 3/8
 180
0.32 / 3.2
2 / 10
60
3.7
RAK - 8D
G 3/8
 90
0.16 / 1.6
2 / 10
90
4.3
Swivel time: The values indicated are for the max. angle of rotation.

Dimensions
* Oscillating reference point


Frame size
A
B
C
D
E
F
G
H
J
L
M
N
P
RAK - 6S
79
145
19.5
86
39.5
12
25
29
2.5
13
36
16
G 1/8
RAK - 6D
79
145
19.5
86
39.5
12
25
29
2.5
13
36
16
G 1/8
RAK - 7S
110
180
23.5
103
53.5
17
30
34.5
3
16
51
24
G 1/4
RAK - 7D
110
180
23.5
103
53.5
17
30
34.5
3
16
51
24
G 1/4
RAK - 8S
141.5
220
30
125
65
25
45
41.5
3.5
22
66
32
G 3/8
RAK - 8D
141.5
220
30
125
65
25
45
41.5
3.5
22
66
32
G 3/8
...Frame size
Q
R
S
T
U
V
Y
Z
AA
BB
CC
DD
EE
...RAK - 6S
45
M6x1
5
28
29
58
11
14
6
20
46
51
44
...RAK - 6D
45
M6x1
5
28
29
58
11
14
6
20
46
51
44
...RAK - 7S
70
M8x1,25
5
34
34.5
85.2
10.5
15.5
8
23.5
56
75
61
...RAK - 7D
70
M8x1,25
5
34
34.5
85.2
10.5
15.5
8
23.5
56
75
61
...RAK - 8S
80
M10x1,5
42
 
41.5
110
13
17.5
10
27.5
70
88.5
78
...RAK - 8D
80
M10x1,5
42
 
41.5
110
13
17.5
10
27.5
70
88.5
78
...Frame size
FF
GG
NV
NZ 1)







...RAK - 6S
57
68
10
4x2,5x20







...RAK - 6D
57
68
10
4x2,5x20







...RAK - 7S
85
97
13
5x3x36







...RAK - 7D
85
97
13
5x3x36







...RAK - 8S
98.5
125
19
7x4x40







...RAK - 8D
98.5
125
19
7x4x40







1) Groove: width x depth x length

Accessories
1) rotary unit 2) foot mounting 3) flange mounting 4) mounting plate for sensor 5) sensor
6) swivel arm with magnet 7) hydraulic shock absorber 8) swivel arm without magnet 9) swivel arm with magnet




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Part numbers marked in bold are available from the central warehouse in Germany, see the shopping basket for more detailed information
Pneumatics catalog, online version, as of 2013-02-27, © Bosch Rexroth AG, subject to change