Festo DSNU-S Instructions

Festo DSNU-S Instructions

Round cylinder

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DSNU(-S)
Round cylinder
Instructions | Operating
8118579
2020-03b
[8118581]
Translation of the original instructions
© 2020 all rights reserved to Festo SE & Co. KG
1

Applicable documents

All available documents for the product è www.festo.com/sp.
2

Safety

2.1

Safety Instructions

Take into consideration the ambient conditions at the location of use.
Only use the product in original status without unauthorised modifications.
Observe labelling on the product.
Store the product in a cool, dry, UV-protected and corrosion-protected envir-
onment. Ensure that storage times are kept to a minimum.
Prior to mounting, installation and maintenance work: Switch off compressed
air supply and secure it from being switched back on.
Observe tightening torques. Unless otherwise specified, the tolerance is
± 20 %.
2.2

Intended use

The product is intended for the transport of loads.
2.3

Training of skilled personnel

Installation, commissioning, maintenance and disassembly should only be con-
ducted by qualified personnel.
3

Further information

Accessories è www.festo.com/catalogue.
Spare parts è www.festo.com/spareparts.
4

Service

Contact your regional Festo contact person if you have technical questions
è www.festo.com.
5

Product overview

5.1

Function

The piston rod moves outwards when the cylinder chamber is pressurised. The
advanced piston rod is retracted as follows:
For single-acting cylinders, by means of the integrated return spring.
For double-acting cylinders, by pressurising the other cylinder chamber.
The cylinder force during advance and return is:
different with piston rod at one end.
identical with through piston rod.
The position of the piston can be detected by proximity sensors.
5.2
DSNU
Festo SE & Co. KG
Ruiter Straße 82
73734 Esslingen
Germany
+49 711 347-0
www.festo.com
8118579
1 Male thread on the piston rod for
mounting the payload
2 Male thread on the bearing cap for
mounting
Fig. 1 Design of DSNU
1 Male thread on the piston rod for
mounting the payload
2 Male thread on the bearing cap for
mounting
Fig. 2 Design of DSNU-S
5.3
Handle the cylinder so as to avoid any damage to the cylinder barrel and pis-
ton rod.
Observe the following points:
Observe tightening torque of lock nuts on the male thread 2.
Size
DSNU
Tightening torque
on the bearing cap
Tightening torque
on the end cap
DSNU-S
Tightening torque
on the bearing cap
Tightening torque
on the end cap
Tab. 1 Tightening torque on the bearing/end cap
Avoid mechanical alignment inaccuracies between the piston rod and an
external guide using one of the following measures:
A rigid coupling impairs the service life and function of the cylinder.
5.4
In the case of a large payload, high piston speed or when using quick exhaust
valves:
Use suitable shock absorbers or external stops.

Design

Installation
Parallel installation when using external guides
Installation without distortion
Compliance with the permissible loads è www.festo.com/catalogue
8
10
12
[Nm]
10
10
20
[Nm]
4.6
4.6
10.8 10.8 20.7 20.7 21.5 25.1 30.9 30.9
[Nm]
5
11
[Nm]
Absolutely precise alignment (general)
Use of a self-aligning rod coupler FK
Use of a guide unit FEN with compensating coupling
Mounting Accessories
3 Supply ports in the bearing/end
cap
4 Male thread on the end cap for
mounting
5 Cross hole for mounting
3 Supply ports in the bearing/end
cap
4 Male thread on the end cap for
mounting (size 20, 25 only)
16
20
25
32
40
50
20
40
40
60
80
100
11
35
35
35
35
63
100

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Summary of Contents for Festo DSNU-S

  • Page 1 4 Male thread on the end cap for mounting mounting Translation of the original instructions 5 Cross hole for mounting © 2020 all rights reserved to Festo SE & Co. KG Fig. 1 Design of DSNU DSNU-S Applicable documents All available documents for the product è www.festo.com/sp.
  • Page 2 Elastic cushioning rings/plates, at both ends (P cushion- • Pressurise the system slowly. A soft start valve is used for gradual start-up ing) pressurisation è www.festo.com/catalogue. – Pneumatic cushioning, can be adjus- With medium or large payloads or at high speeds: ted at both ends (PPV cushioning) •...
  • Page 3 [psi] 21 … 14- 21 … 14- 13.8 … - 13.8 … 145 Ambient temperature [°C] –20 … +80 Theoretical force at 6 bar/0.6 MPa/90 psi, advance Theoretical force at 6 bar/0.6 MPa/90 psi, return Basic weight 20.1 35.9 49.0 126.1 180.0 Additional weight per 10 mm stroke Tab. 5 Technical data DSNU-S...

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