ROLL EJECTOR CHUCKS

DUPLEX

Roll ejector chucks Duplex
patented
Duplex, roll ejector chuck, guarantees a perfect grip on any material core, eliminates paper waste, and ensures safety during the roll change
Roll ejector chucks Duplex
Roll ejector chucks Duplex

Roll ejector chuck

Duplex always ensures the automated ejection of rolls of any size and prevents injuries by eliminating manual unload operations
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Renova takes in great consideration customer’s needs, and it’s precisely from customers’ feedback that we designed Duplex, a roll ejector chuck for roll stands.

Duplex combines a torque activated chuck with a pneumatic telescopic piston concentric to the mechanical chuck. It has been designed to cope with the difficulties that often occur when loading and unloading rolls from the roll stands. Optimizing paper production processes and reducing waste is fundamental for safeguarding the plant’s economy as well as for pursuing ecological purposes.

Reel core slippage, core damage or excessive residual paper on the core: these are only few of the problems which can occur, in addition to the failed core ejection from the roll stand which forces the operator to intervene with unsafe manual operations.

This revolutionary core chuck always ensures to lock and then safely release any dimension roll from roll stand. By eliminating manual unload operations, it prevents injuries and reduces risks for the operator according to the Technical Standards ISO 11228 Ergonomics – Manual Handling, “Lifting and Carrying” and “Handling of low loads at high frequency”.

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Why DUPLEX

Duplex combines a torque activated chuck with a pneumatic telescopic piston concentric to the mechanical chuck
CORE CHUCK

Uses the movement of the reel to expand the jaws and automatically block and center the reel core

IMPRESSIVE EJECTION FORCE

Piston’s coaxial thrust force of 2000 kg (first stage) + 1000 kg (second and final stage) at 6 bar, applied directly to the roll

ANTI-UNSCREW CAP

Fastest core engagement in the industry: the tight clearance between core and chuck reduces engagement time

Duplex roll ejector chuck 03020105-2
ROTARY CYLINDER

Rotary cylinder with pneumatic telescopic piston which is concentric to the chuck

NO-FALL-DOWN SYSTEM

Eliminates the dropping of the jaws while removing the chuck cage for cleaning purposes

EJECTION FLANGE

New design carefully studied to avoid any core and roll damages

Roll ejector chuck

WITH DUPLEX SAY STOP TO

SLIP-GRIP

Perfect grip always ensured to every material core from the first phase of work

PAPER WASTE

By avoiding slippage and lateral damage, rolls can be used up to the last meters

JAMMED ROLLS

Automatic ejection of every dimension roll always ensured, even in case of damaged cores

LOW SAFETY

Duplex won’t need manual intervention for the discharge of blocked rolls

DUPLEX

PATENTED INNOVATIVE DESIGN

FASTEST GRIP EVER

Fastest core engagement in the industry: the tight clearance between core and chuck reduces engagement time.

100% FITS ALL ROLL STANDS

Duplex is ideal for roll stands without an existing core ejector system or with automatic OEM original ejector system. It has an easy and fast installation and its simple and compact design doesn’t interfere with the roll width.

Roll ejector chucks Duplex
100% FITS ALL ROLL STANDS

Duplex is ideal for roll stands without an existing core ejector system or with automatic OEM original ejector system. It has an easy and fast installation and its simple and compact design doesn’t interfere with the roll width.

roll stand
without ejector
mechanical chuck
with spring
pneumatic
ejector
with fork
mechanical chuck
with spring
ejection cylinder
reel core ejection
ejection of 1000 mm diameter roll
ejection of 1600 mm diameter roll
coaxial thrust force of the ejector
roll ejection 100% ensured
ejector free of dust and debris always working
absence of axial counter thrust during the loading phase
automatic re-enter of the ejector
complete visibility and safety during loading
no maintenance
total safety of the operations always ensured

CONFIGURATIONS

CAP
roll ejector chuck configurations
EJECTION FLANGE THICKNESS
roll ejector chuck configurations
CYLINDER
roll ejector chuck configurations
MOUNTING
roll ejector chuck configurations

Duplex models

Datasheet
Duplex roll ejector chuck

Duplex roll ejector chucks

CK-XC

Single diameter roll ejector chuck with mounting flange

Duplex CK-XC with single diameter chuck, available for single core diameters.
Equipped with mounting flange and provided with rotary joint.

Duplex roll ejector chuck

Duplex roll ejector chucks

CK-XC/SDD

Double diameter roll ejector chuck with mounting flange

Duplex CK-XC/SDD with stepped chuck that allows to run multiple core sizes.
Equipped with mounting flange and provided with rotary joint.

Duplex roll ejector chuck

Duplex roll ejector chucks

CK-XC/SM

Modular roll ejector chuck with mounting flange

Duplex CK-XC/SM presents a quick-change system of the cage that allows to run any core size.
Equipped with mounting flange and provided with rotary joint.

Duplex roll ejector chuck

Duplex roll ejector chucks

CK-XC/PM

Pneumomechanic roll ejector chuck with mounting flange

Duplex CK-XC/PM presents a quick-change system of the cage that allows to run any core size.
Equipped with mounting flange and provided with rotary joint.

Duplex roll ejector chuck

Duplex roll ejector chucks

CK-X

Single diameter roll ejector chuck with mounting shaft

Duplex CK-X with single diameter chuck, available for single core diameters.
Equipped with mounting shaft and provided with rotary joint.

Duplex roll ejector chuck

Duplex roll ejector chucks

CK-X/SM

Modular roll ejector chuck with mounting shaft

Duplex CK-X/SM presents a quick-change system of the cage that allows to run any core size.
Equipped with mounting shaft and provided with rotary joint.

Duplex roll ejector chuck

Duplex roll ejector chucks

CK-X/PM

Pneumomechanic roll ejector chuck with mounting shaft

Duplex CK-X/PM with single diameter chuck, available for single core diameters.
Equipped with mounting shaft and provided with rotary joint.

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