7 disassembly and repair, 8 accessories, 9 troubleshooting – Festo DSNU-…-KP User Manual
Page 8: 10 technical data
7
Disassembly and repair
Caution
Danger of injury due to uncontrolled movement of components!
Before dismantling:
• Make sure that the cylinder
8 and the clamping cartridge2 are exhausted.
• Loosen all of the mounting components on the cylinder
8 or clamping unit5.
• Recommendation: Send the product to our repair service.
This way the fine tuning and tests that are required will be taken into particular
consideration.
8
Accessories
Note
• Please select the corresponding accessories from our catalogue
(
www.festo.de\catalogue).
9
Troubleshooting
Malfunction
Possible cause
Remedy
The clamping rod
4
moves more than the
max. permitted axial play
despite an exhausted
clamping cartridge
2
Incorrect pneumatic ac-
tuation
Check pneumatic actu-
ation
Permanent manual un-
locking
Remove the mounting
screw
9 from the supply
port
1
Load too great and/or
static holding force ex-
ceeded
Reduce holding force, do
not exceed static holding
force
Contamination on the
clamping rod
4
(
Maintenance and
care)
Clamping cartridge
2 de-
fective
Replace clamping cart-
ridge
2
Wear
Send clamping cart-
ridge
2 to Festo
Clamping rod
4 does not
move despite an ex-
hausted clamping cart-
ridge
2
Insufficient operating
pressure on the clamping
cartridge
2
Increase operating pres-
sure (
Technical data)
Clamping cartridge
2 de-
fective
Send clamping cart-
ridge
2 to Festo
After pressurisation the
clamping rod
4 moves to
the end position at high
speed
Cylinder strikes against a
non-pressurised cham-
ber
Always strike against a
pressurised chamber
(
Commissioning)
Fig. 17
10
Technical data
KP
Mounting position
Any
Operating pressure
(on the clamping cartridge
2)
[bar]
3 … 10
Operating medium
Compressed air to ISO 8573-1:2010 [7:4:4]
Ambient temperature
[°C]
–10 … +80
Rod quality (KP/KPE)
– Steel, rod rolled smooth
(e.g. X20Cr13, X6CrNiMoTi 17222);
tensile strength > 650 N/mm
2
;
hardness [HB30] > 175
– Hardened steel: min. HRC 60
– Hard-chromium plated steel: thickness of layer min.
20 µm
– Tolerance range of rod diameter h8
– Surface roughness R
max.
= 4 µm
Material (clamping cartridge
2)
Housing:
Anodised aluminium
Piston:
Polyacetal
Spring:
Spring steel
Clamping jaws:
Brass
Seals:
Nitrile rubber, polyurethane
Fig. 18
KP-…
4-
80
6-
180
8-
350
10-
350
12-
600
16-
1000
20-
1400
20-
2000
25-
5000
32-
7500
KPE-…
4
6
8
10
12
16
–
20
25
32
ADN-…-KP
–
20/
25
32
40
50
63
80/
100
–
DNC-…-KP
–
32
40
50
63
80/
100
125
DSBC-…-C
–
32
40
50
63
80/
100
125
DSNU-…-KP
8/
10
12/
16
20
25
32
40
50
63
–
Clamping rod
∅
Dia-
meter
[mm]
4
6
8
10
12
16
20
20
25
32
Supply port
1
M5 M5
M5
M5
M5
G
Á
G
Á
G
Á
G
Á
G
Á
Static holding
force
[N]
80
180
350
350
600
1000
1400
2000
5000
7500
Axial play under
load
Dia-
meter
[mm]
0.2 0.3
0.5
0.8
1.8
Fig. 19