Festo DNCKE User manual

en Operating
instructions
8074345
2017-10b
[8074347]
Cylinder with clamping unit / Clamping unit
DNCKE/KEC

DNCKE/KEC
2 Festo – DNCKE/KEC – 2017-10b
Original instructions
Symbols: The clamping unit KEC or the cylinder with clam
ping unit DNCKE is designated a product or cy
linder in these operating instructions.
Installation and commissioning may only be per
formed in accordance with these instructions by
technicians with appropriate qualifications.
Warning
Caution
Note
Environment
Accessories
English 3.........................................................................

DNCKE/KEC
Festo – DNCKE/KEC – 2017-10b English 3
English – Cylinder with clamping unit / Clamping unit
DNCKE/KEC
Table of contents
1 Configuration 5............................................................
2 Safety 6..................................................................
2.1 Intended use 6.............................................................
2.2 Foreseeable misuse 6.......................................................
2.3 General safety information 7..................................................
2.4 Mounting and connecting 7...................................................
2.5 Qualification of specialized personnel 7.........................................
3 Function 8................................................................
4 Transport 8...............................................................
5 Installation 8..............................................................
5.1 Mechanical installation 8.....................................................
5.1.1 Mounting the clamping unit 9.........................................
5.1.2 Mounting attachments 10.............................................
5.1.3 Mounting accessories 11.............................................
5.2 Pneumatic installation 11.....................................................
5.2.1 Prerequisites 11....................................................
5.2.2 Functional tests 12..................................................
5.2.3 Creating a tubing connection to the clamping unit 12.......................
6 Commissioning 13...........................................................
6.1 Dismounting the round material (only required for KEC) 14...........................
6.2 Adjustment of the clamping unit 15..............................................
6.3 Test run 16.................................................................
6.4 Clamping force test 16........................................................
7 Operation 20...............................................................
7.1 Adjustment of the clamping unit 21..............................................

DNCKE/KEC
4 Festo – DNCKE/KEC – 2017-10b English
8 Maintenance and care 22.....................................................
9 Disassembly and repair 22....................................................
10 Disposal 22................................................................
11 Accessories 22..............................................................
12 Fault clearance 23...........................................................
13 Technical data 24............................................................

DNCKE/KEC
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Documentation on the product
For all available product documentation èwww.festo.com/pk
1 Configuration
DNCKE KEC
2
6
4
5
3
89
1
7 23765
1Compressed air supply port for cylinders next
to the adjusting screws for the pneumatic
cushioning (only for DNCKE)
2Supply port for releasing the clamp
3Locking screw with internal hexagon socket
(for adjusting sleeve)
4Piston rod (only DNCKE)
5Adjusting sleeve with spanner flat
6Hollow bolt with thread for mounting
7Hole with filter element for exhausting the
clamping chamber
8Slots for proximity sensor (only DNCKE)
9Round material for transport protection
(only KEC)
Fig. 1

DNCKE/KEC
6 Festo – DNCKE/KEC – 2017-10b English
Definition
In these operating instructions, the designation
“clamping unit” is used for:
– the individual product KEC
– the design type DNCKE integrated in the
cylinder
In these operating instructions, the designation
“round material” is used for:
– the transport lock for KEC
– the piston rod for DNCKE
DNCKE
KEC
Fig. 2
2 Safety
2.1 Intended use
The clamping unit KEC is intended to serve both as an individual product and integrated into a DNC
cylinder (for cylinders with clamping unit DNCKE) for holding, clamping and inhibiting the movement of
round material.
2.2 Foreseeable misuse
The clamping unit is not intended as a brake. Use as a braking device (dynamic applications) does not
conform with the intended use.
The clamping unit is not suitable for positioning tasks or for transmitting torques and lateral forces. A
self-aligning rod coupler (è11 Accessories) can prevent the transmission of lateral forces and bending
moments.

DNCKE/KEC
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2.3 General safety information
WARNING
Risk of injury! Uncontrolled movement. Piston rods can advance suddenly and unexpec
tedly, thereby causing injury to anybody who is in the positioning range.
 Make sure that nobody can place his/her hand in the positioning range of the payload.
 Make sure that no foreign objects are present in the positioning range of the payload.
 Do not modify the product in any way. Improper modifications impair its function and
present a safety risk.
 Observe legal regulations applicable to the destination.
 Only use the product if it is in its original status and in perfect working order.
 Use the product only within the defined values (è13 Technical data).
 Observe product labelling.
 Observe applicable documents.
 Take into consideration the ambient conditions at the location of use.
 Protect the product during storage and operation from the following:
– Wetness or moisture
– Corrosive coolant or other materials (e.g. ozone)
– UV radiation
– Oils, greases and grease-solvent vapours
– Grinding dust
– Glowing chips or sparks
2.4 Mounting and connecting
 Observe tightening torques. Unless otherwise specified, the tolerance is ±20 %.
2.5 Qualification of specialized personnel
Only qualified specialized personnel may install, commission, service or disassemble the clamping unit.
The specialized personnel must be familiar with the installation and operation of electrical and pneu
matic control systems.

DNCKE/KEC
8 Festo – DNCKE/KEC – 2017-10b English
3 Function
Pressurising with compressed air on the supply port 2(èFig. 1)
opens the internal clamping component through a pneumatically
driven release mechanism. The round material can then move freely.
Fig. 3
P
If the compressed air supply port is exhausted, a spring-loaded
mechanism generates the clamping force of the clamping compon
ent. That way, the round material is clamped.
Fig. 4
4 Transport
 Take product weight into account (è13 Technical data).
5 Installation
5.1 Mechanical installation
Prerequisites
Note
Lateral loads and bending moments exerted on the round material damage its function
and destroy the internal clamping component.
 Make sure that the loads are only exerted on the round material in the direction of
movement. The use of a self-aligning rod coupler (è11 Accessories) prevents later
al forces.
Note
Movement of the round material against the clamping forces leads to heavy wear on the
internal clamping element and the round material.
 Make sure that the holding force is never exceeded. Otherwise, unexpected move
ment may occur.
 Make sure that the clamping unit is installed as follows:
– Operating elements always accessible
– Product fixed in such a way that it is free from mechanical stress or bending
 Check if additional external safety measures (e.g. pawls or moveable bolts) are required.
 Select the installation type for the desired application.
Refer to the Festo catalogue for more mounting alternatives (èFig. 5) and required accessories.

DNCKE/KEC
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5.1.1 Mounting the clamping unit
Interfaces for mounting components on the cover (examples)
with foot mounting HNC1) with flange mounting FNC1) with swivel mounting SNC1)
1) èwww.festo.com/catalogue
Fig. 5

DNCKE/KEC
10 Festo – DNCKE/KEC – 2017-10b English
Dimensions (èCatalogue specifications)1)
Clamping unit KEC Clamping unit (with cylinder) DNCKE
1) èwww.festo.com/catalogue
Fig. 6
Size DNCKE 40 63 100
KEC 16 20 25
L12) [mm] 178 208.5 287
ZJ+ (plus stroke length) [mm] 277 315 408
TG [mm] 38 56.5 89
E [mm] 54 80 126
Screw-in depth [mm] 9.5 … 15 12.5 … 14 14 … 17
Screw M6 (4x) M8 (4x) M10 (4x)
Tightening torque [Nm] 5 13 30
2) Dimension varies depending on setting of the adjusting screw.
Tab. 1
 Place the clamping unit in the intended position.
 Tighten screws evenly (tightening torques èTab. 1).
5.1.2 Mounting attachments
Mounting on the DNCKE
 Mount the attachment component on the piston rod.
The spanner flat aJ on the piston rod serves as a counter holder
for the lock nut. If necessary, secure the lock nut with a screw
locking agent.
Fig. 7
aJ