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1. Remove the cover cap from the
housing (if present).
2. Unscrew the locking nut (K) (Fig. 25)
of the shock absorber.
The unscrewing length of the shock
absorber (elastomer shock absorber
aC / aD or shock absorber aE ) can be
used to compensate for the
deviation of the end position.
This occurs during pre-adjustment
when the shock absorber is moved
against the unpressurised stop lever.
3. Screw the shock absorber into or out
of the shock absorber retainer using
a hexagon spanner.
The permissible unscrewing lengths
are listed in the following table
(Fig. 26).
Size
12
L aC
aD
[mm]
0 ... 2.5
Unscrewing length
/
L aE
[mm]
0 ... 1.25 0 ... 1.5
Unscrewing length
Fig. 26
When all stops have been adjusted:
4. Tighten the locking nuts (K) of the shock absorbers again.
The required tightening torque M
Size
12
[Nm]
2
Tightening torque
of the lock nut (K)
M
A
Fig. 27
5. Check that the proximity switches function correctly.
6. Press the cover cap of the DSM back
onto the snap ring (if present).
7. Repeat the test run.
6
Operation
For several uninterrupted swivel cycles:
• Make sure that the maximum permitted swivel frequency is not exceeded
(
Technical data).
Otherwise, the functional reliability will be impaired by excessive rise in
temperature.
To extend the service life of the shock absorbers:
• Apply a thin coat of grease to the stop caps of the shock absorbers.
To check the functions:
• Check the shock absorbers for oil loss after every 2 million switching cycles.
• Replace shock absorbers with visible oil loss or at the latest every 5 million
switching cycles (
Accessories).
7
Maintenance and care
If the device is dirty:
• Clean the DRQD with a soft cloth.
All media gentle to the material may be used as cleaning agents
(e.g. warm soap suds up to +60 °C).
8
Disassembly and repairs
For eccentric masses on the lever arm:
Warning
Risk of injury from masses that slide down
suddenly if there is a drop in pressure.
• Make sure that the mass has reached a
stable position before venting
(e.g. the lowest point).
DSM-...-P
DSM-...-P1
DSM-...-CC
Fig. 25
16
25
32
40
0 ... 3
0 ... 4
0 ... 4.5
0 ... 5.2
0 ... 2
0 ... 2.25 0 ... 2.7
is summarised in the table below (Fig. 27).
A
16
25
32
40
3
3
5
20
Fig. 28
Recommendation:
• Return the product to our repair service for overhaul. This ensures that special
aC
attention will be paid to the necessary fine adjustments and inspections.
• Information about spare parts and aids can be found at:
(K)
www.festo.com/spareparts
9
Accessory
Note
aD
• Please select the appropriate accessories from our catalogue
www.festo.com/catalogue
(K)
10
Troubleshooting
Malfunction
Uneven movement of
aE
the moving mass
(K)
– hard impact at the
end position
– drive shaft does not
remain in the end
position
Fig. 29
63
0 ... 6.6
11
Technical data
0 ... 3.3
Size
DSM-...-B
Pneumatic connection
Constructional design
Type of mounting
Mounting position
63
Max. swivel frequency at 6 bar
35
Operating medium
Min. operating pressure
DSM-...-B
DSM-T-...-B
DSM-...HD-...-B
Max. operating pressure
Ambient temperature
Torque at 6 bar
DSM-...-B
DSM-T-...-B
Min. stop radius r
min
Max. perm. stop force F
Max. perm. force on drive shaft
Axial force F
on DSM-...-B
X
Axial force F
on DSM-...-HD-...-B
X
Radial force F
on DSM-...-B
Z
Radial force F
on DSM-...-HD-...-B
Z
Note on materials
Material information and product weight
DSM-...-P...-B
Cushioning
Swivel angle
Precision adjustment
Cushioning angle
Permitted mass moment of inertia
DSM-...-P1-...-B
Cushioning
Swivel angle
Precision adjustment
Swivel frequency at 6 bar (DSM-...-P1-HD)
Cushioning angle
Permitted mass moment of inertia
DSM-...-CC-...-B
Cushioning
Swivel angle
Precision adjustment
Swivel frequency with 2 shock absorbers
at max. swivel angle
at maximum swivel angle (DSM-...-HD)
at smaller swivel angles
Cushioning angle
Permitted mass moment of inertia
1) Unrestricted
Fig. 30
Possible cause
Remedy
Flow control valves inserted
Check the flow control valve
incorrectly
function (exhaust air flow control)
Asymmetric angle setting
Symmetric setting preferred
Residual energy too high
– select lower swivel speed
– use external shock absorbers
– move only against residual air
cushion on the exhaust side
– select a lighter mass
12
M5
Semi-rotary actuator with rotary vane
Via female threads
Any
[Hz]
2
Compressed air in accordance with
ISO8573-1:2010 [7:-:-]
[bar]
2
[bar]
2.5
[bar]
3
[bar]
10
[°C]
-10 ... +60
[Nm]
1.25 2.5
[Nm]
2.5
[mm]
15
[N]
90
[N]
18
[N]
180
[N]
45
[N]
200
Free of copper and PTFE
www.festo.com/catalogue
Elastic cushioning, both sides
[°]
0 ... 270
[°]
-6
[°]
1.8
1)
–4
2
[10
kg m
] 0.35 0.7
Elastic cushioning, adjustable
at both ends
[°]
0 ... 246
[°]
-6
[Hz]
1.5
[°]
10
1)
–4
2
[10
kg m
] 1.05 2.1
Self-adjusting shock absorbers
at both ends
[°]
0 ... 246
[°]
-3
[Hz]
1.5
[Hz]
1
[Hz]
2
[°]
15
1)
–4
2
[10
kg m
] 7
16
25
32
40
63
Gx
G¼
1.6
1.8
1.5
2.5
2
3
2
5
10
20
40
5
10
20
40
80
17
21
28
40
50
160
320
480
650
1050
30
50
75
120
500
290
350
450
950
1300
75
120
200
350
500
300
450
550
1200 1600
1.4
1.2
1.4
2
2
1.1
1.7
2.4
20
0 ... 240
1
9
7.5
6.5
6.5
6
3.3
5.1
7.2
60
0 ... 240
1
1
0.7
0.7
0.6
0.5
1.5
12
10
12
16
17.5
12
16
21
40
160
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