Festo DNCKE Series, KEC Series, KEC-16 Series, DNCKE-40 Series, KEC-20 Series Operating Instructions Manual

DNCKE-...-S / KEC-...-S

Cylinder with clamping unit/Clamping unit

Instructions | Operat­ing

8098628

8098628
2018-12d
[8098630]

Translation of the original instructions

2 Festo — DNCKE-...-S / KEC-...-S — 2018-12d

Table of contents

1 Design.......................................................................................................................... 4

2 Safety........................................................................................................................... 5

2.1 Intended use................................................................................................................ 5

2.2 Foreseeable misuse...................................................................................................... 6

2.3 Specified standards...................................................................................................... 6

2.4 General safety instructions........................................................................................... 6

2.5 Mounting and connecting............................................................................................. 6

2.6 Training of qualified personnel..................................................................................... 6

3 Function........................................................................................................................7

4 Transport..................................................................................................................... 7

5 Installation.................................................................................................................. 7

5.1 Mechanical installation................................................................................................. 7

5.1.1 Mounting the clamping unit.................................................................................... 8

5.1.2 Mounting attachments............................................................................................9

5.1.3 Mounting accessories............................................................................................. 10

5.2 Pneumatic installation.................................................................................................. 10

5.2.1 Requirements......................................................................................................... 10

5.2.2 Functional tests...................................................................................................... 11

5.2.3 Creating a tubing connection to the clamping unit..................................................12

6 Commissioning............................................................................................................ 13

6.1 Dismantling the round material (only required for KEC).................................................13

6.2 Adjustment of the clamping unit................................................................................... 15

6.3 Test run......................................................................................................................... 17

6.4 Checking clamping force/overtravel............................................................................. 18

7 Operation and use....................................................................................................... 23

7.1 Regular adjustment of the clamping unit...................................................................... 24

8 Maintenance and care................................................................................................. 24

9 Disassembly and repair............................................................................................... 24

10 Disposal........................................................................................................................25

11 Accessories.................................................................................................................. 25

12 Fault clearance............................................................................................................ 25

13 Technical data............................................................................................................. 26

14 Characteristic curves................................................................................................... 28

3Festo — DNCKE-...-S / KEC-...-S — 2018-12d

Design

1 Design

NOTICE!

Documentation on the product

All available documents for the product èwww.festo.com/pk

1

Supply port for cylinder next to the adjusting
screws for the pneumatic cushioning (only
for DNCKE)

2

Supply port for releasing the clamp

3

Locking screw with internal hexagon socket
(for adjusting sleeve)

4

Piston rod (DNCKE only)

Fig. 1

5

Adjusting sleeve with spanner flat

6

Hollow bolts with thread for mounting

7

Hole with filter element for exhausting the
clamping chamber

8

Slots for proximity sensors (DNCKE only)

9

Round material for transportation lock (KEC
only)

Festo — DNCKE-...-S / KEC-...-S — 2018-12d4

Safety

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 transportation lock for KEC

• The piston rod for DNCKE

1

DNCKE-...-S

Fig. 2

2

KEC-...-S

2 Safety

2.1 Intended use

The clamping unit KEC is intended to serve both as an individual product and integrated into a cylinder
DNC (for cylinder with clamping unit DNCKE) for the following usage:
– As a safety device for holding and clamping round material.
– As a well-tried component for braking a linear movement (stopping a movement) for processing or

handling procedures in a normal industry environment without substances and ambient condi-

tions that influence the function or materials used.
The product has been checked by the Institute for Occupational Safety and Health and is documented
by a DGUV test certificate.
If used as a braking device, e.g. for interrupting potentially dangerous movements in a danger zone, a
regular check of the overtravel as a factor of the travel speed and the frequency of the braking proced­ures (increased wear) as well as of the ambient operating conditions (min./max. temperature) is
necessary.

5Festo — DNCKE-...-S / KEC-...-S — 2018-12d

Safety

2.2 Foreseeable misuse

The clamping unit is not suitable for positioning tasks or for transmitting torques and lateral forces. A
self-aligning rod coupler (è 11 Accessories) can prevent the transmission of lateral forces and bend­ing moments.

2.3 Specified standards

Version

DINENISO12100:2011-03

DINENISO4414:2011-04

DINENISO13849-1:2008-12

Tab. 1 Standards specified in the document

2.4 General safety instructions

– Observe legal regulations applicable to the destination.
– Only use the product if it is in its original condition and in perfect working order.
– Use the product only within the defined values (è 13 Technical data).
– Observe product labelling.
– Observe further 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
The operating modes must guarantee that the residual risk is smaller/equal to the accepted risk
(èDINENISO12100). The measures for risk reduction are to be taken in accordance with
DINENISO4414, DINENISO12100 and DINENISO13849-1.
Monitor/check the function of the entire system during use in accordance with the measures defined
in the validation report (èDINENISO13849-2).

2.5 Mounting and connecting

Observe tightening torques. Unless otherwise specified, the tolerance is ±20%.

•

2.6 Training of qualified personnel

Only qualified personnel may install, commission, service or disassemble the clamping unit. The
skilled personnel must be familiar with the installation of electrical and pneumatic control systems.

6 Festo — DNCKE-...-S / KEC-...-S — 2018-12d

Function

3 Function

Pressurising with compressed air on the supply port 2 (è Fig.1) opens the internal clamping com­ponent through a pneumatically driven release mechanism. The round material can then move freely.

Fig. 3

If the supply port is exhausted, a spring-loaded mechanism generates the clamping force of the clamp­ing component. The round material is then clamped.

Fig. 4

4 Transport

• Take product weight into account (è 13 Technical data).

5 Installation

5.1 Mechanical installation

Requirements

NOTICE!

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 (è 11 Accessories) prevents lateral forces.

NOTICE!

Movement of the round material against the clamping forces leads to heavy wear on the internal
clamping component and the round material.

• Make sure that the holding force is never exceeded. Otherwise, unexpected movement may occur.

– Make sure that the clamping unit is installed as follows:

– Operating elements always accessible
– Product secured free from distortion and deflection

– Direct reaction forces via the mounting components as compressive force. Observe the braking

direction r (è Tab. 2 ).

7Festo — DNCKE-...-S / KEC-...-S — 2018-12d

Installation

– Check whether safety measures (e.g. toothed latches or moving bolts) are also required externally

(èDINENISO12100 and DINENISO13849-1).

– Select the installation type for the desired application. Refer to the Festo catalogue for more

mounting alternatives (è Tab. 2 ) and required accessories.

5.1.1 Mounting the clamping unit

Interfaces for mounting components on the cover

e.g. with foot mounting HNC

1)

(only permitted for use as a holding device)

e.g. with flange mounting FNC
(permitted for use as a holding and braking

1)

device – observe braking direction r)

1)

è www.festo.com/catalogue

Tab. 2

8 Festo — DNCKE-...-S / KEC-...-S — 2018-12d

Installation

Dimensions (see catalogue information)

1)

Clamping unit KEC Clamping unit (with cylinder) DNCKE

1)

è www.festo.com/catalogue

1)

èwww.festo.com/catalogue

Tab. 3

DNCKE 40 63 100Size

KEC 16 20 25

1)

L1

[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

1) Dimension varies depending on setting of the adjusting screw.

Tab. 4

1. Place the clamping unit in the intended position.

2. Tighten screws evenly (tightening torques è Tab. 4).

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. 5

9Festo — DNCKE-...-S / KEC-...-S — 2018-12d