ROLL EJECTOR CHUCKS
DUPLEX
Duplex, roll ejector chuck, guarantees a perfect grip on any material core, eliminates paper waste, and ensures safety during the roll change
Roll ejector chuck
Duplex always ensures the automated ejection of rolls of any size and prevents injuries by eliminating manual unload operations
3D videoTutorial videoRenova 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”.
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
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
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
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 |
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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
EJECTION FLANGE THICKNESS
CYLINDER
MOUNTING
Duplex models
DatasheetDuplex 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 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 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 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 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 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 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.