Festo DFST-G2 Series Parts list manual

8104050
DFST-50 ... 80-G2
Stopper cylinder
8104050
2019-02
[8104052]
Instructions| Operat-
ing

Translation of the original instructions
2 Festo — DFST-50 ... 80-G2 — 2019-02

3Festo — DFST-50 ... 80-G2 — 2019-02
1 Further applicable documents..................................................................................... 4
2 Safety........................................................................................................................... 4
2.1 Safety instructions........................................................................................................ 4
2.2 Intended use................................................................................................................ 4
2.3 Foreseeable misuse...................................................................................................... 4
2.4 Training of qualified personnel..................................................................................... 4
3 Further information..................................................................................................... 5
4 Service..........................................................................................................................5
5 Product overview......................................................................................................... 5
5.1 Function....................................................................................................................... 5
5.2 Design........................................................................................................................... 6
6 Mounting..................................................................................................................... 7
6.1 Preparation................................................................................................................... 7
6.2 Mounting...................................................................................................................... 9
6.3 Mounting accessories................................................................................................... 9
7 Pneumatic installation................................................................................................ 10
8 Commissioning............................................................................................................ 11
9 Maintenance................................................................................................................ 12
9.1 Cleaning....................................................................................................................... 12
9.2 Lubrication................................................................................................................... 13
9.3 Fault clearance............................................................................................................. 13
9.4 Repair............................................................................................................................14
10 Modification................................................................................................................ 14
11 Disposal........................................................................................................................14
12 Technical data............................................................................................................. 15
Table of contents

1 Further applicable documents
All available documents for the product èwww.festo.com/pk.
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 environment. 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 stopper cylinder DFST is designed for use as a retractable fixed stop in order to reach defined
holding positions with transported material (e.g. on mounting or sorting systems). The DFST sorts the
stationary transported material in buffer zones.
Fig. 1 Stopping transported material
2.3 Foreseeable misuse
With DFST-...-L: the toggle lever must not be overrun in the stop direction by the transported material
when the lever locking mechanism is active. Otherwise the transported material will damage the lock-
ing mechanism.
2.4 Training of qualified personnel
Installation, commissioning, maintenance and disassembly should only be conducted by qualified per-
sonnel.
The skilled personnel must be familiar with the installation of pneumatic control systems.
Further applicable documents
Festo — DFST-50 ... 80-G2 — 2019-024

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 stopper cylinder DFST is a double-acting cylinder. The piston rod is extended with the toggle lever
mechanism by pressurising the supply port 1. The toggle lever gently stops the incoming transpor-
ted material with the integrated shock absorber. The piston rod is retracted by pressurising the supply
port 2. The stopper cylinder with spring return (not applicable for DFST-...-D/DL) can also be set to
single-acting. This is done by screwing a silencer into the supply port 1 on the bottom. This makes
sense if reduced extension velocities are sufficient.
With the stopper cylinder DFST-..-L with factory-installed lever locking mechanism, the toggle lever
locks into its end position. The attached toggle lever function kit must be converted in order to use the
function of the lever deactivating mechanism è 10 Modification.
Further information
5Festo — DFST-50 ... 80-G2 — 2019-02