cylinders & servocylinderselectrohydraulic

the Italian electrohydraulics www.atos.com

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CH square heads with counterflanges ISO 6020-2/3Nominal pressure 16MPa (160 bar) max 25MPa (250 bar)Bore sizes from ø 63 to ø 400 mm3 rod diameters per boreStrokes up to 5000 mm9 standard mounting styles6 types of sealing systemsRod guides with bronze bushings

CK cylinders and servocylinders

Range of standard cylinders

CK square heads with tie-rodsISO 6020-2Nominal pressure 16MPa (160 bar) max 25MPa (250 bar)Bore sizes from ø 25 to ø 200 mm3 rod diameters per boreStrokes up to 5000 mm16 standard mounting styles6 types of sealing systemsRod guides with bronze bushings

CK & CH cylinders

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CC round heads with counterflanges ISO 6022

Nominal pressure 25MPa (250 bar) max 32MPa (320 bar)Bore sizes from ø 50 to ø 320 mm

1 rod diameter per boreStrokes up to 5000 mm

6 standard mounting styles3 types of sealing systems

Oil ports GAS or SAE6000 threaded

CN cylinders

CN round heads with counterflanges ISO 6020-1

Nominal pressure 16MPa (160 bar) max 25MPa (250 bar)Bore sizes from ø 40 to ø 200 mm

2 rod diameters per boreStrokes up to 5000 mm

9 standard mounting styles3 types of sealing systems

Oil ports GAS or SAE3000 threaded

CC cylinders

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Servocylinders & Servoactuators

• Servocylinders - high performance cylinders equipped with a position transducer; available in a wide range of models and technologies

• Servoactuators - servocylinders with an on-board proportional valve and axis controller, to realize smart and compact motion control units

Double rod servoactuator for high performance punching

Parison servoactuator for blow moulding machines

CKF servocylinder with analog magnetostrictive transducer

CKP servocylinder with integrated potentiometric transducer

CKM servocylinder with digital magnetostrictive transducer

CKN servocylinder with magnetostrictive transducer and remote electronics

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transducer type magnetostrictive, analog

magnetostrictive, digital

magnetostrictive, analog potentiometric inductive

linearity error < ± 0,02% F.S. < ± 0,01% F.S. < ± 0,02% F.S. ± 0,1% F.S. ± 0,2% F.S.

repeatability < ± 0,001% F.S. < ± 0,001% F.S. < ± 0,005% F.S. ± 0,01% F.S. ± 0,05% F.S.

max speed 1 m/s 2 m/s 1 m/s 0,5 m/s 1 m/s

strokes 50 to 2500 25 to 3000 100 to 3000 100 to 900 30 to 1000

temperature limit -20°C to + 75°C -20°C to + 75°C -20°C to + 90°C -20°C to + 100°C -20°C to + 120°C

main features

• High precision• Programmable digital version• Several output signals available• Contactless position determination• Suitable for hard environmental conditions

(shocks, vibrations, strong magnetic fields) and high working frequencies

• High precision• Programmable

conditioning card• Compact

construction• Rugged execution

• Sliding contact between wiper and the resistive track

• Compact construction

• Contactless position determination

• Compact construction

• High resistance at high temperatures

Position transducers range

CKF CKM CKN CKP CKV

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CNX stainless steel cylinders

CKA cylinders are designed to avoid the self-ignition of the surrounding atmosphere in presence of explosive gas or dust, according to ATEX 94/9/EC directive, Ex II 2GD ck IIC T6They can be supplied with ex-proof proximity sensors or SIL 2 rod position transducers

CNX cylinders are made with high quality stainless steel to ensure high resistance to corrosive environments or for use with aggressive fluids like water-based HFA or pure water. They are ideally suited for several applications: Pharmaceutical, Marine, Military, Waste Management, Offshore and Chemical

Material Cylinder componentMechanical properties Rm min Rs min

[MPa] [MPa]Corrosion resistance

AISI 316L housing and heads 450 195 > 1200 hAISI 316L A4 70 screws 700 450 > 1200 hAISI 431 piston and rod 800 600 > 600 hAISI 420 Spherical bearing of style S 700 500 < 100 hAISI 630 housing and rod 860 724 > 1000 h

CKA ATEX cylinders

ATEX cylinders ATEX servocylinder

CNX stainless steel servocylinder

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Cylinders for special applicationsAtos cylinders and servocylinders successfully fulfill critical requirements of the most demanding sectors & applications

CN ATEX cylinders Sealing IP68 at 3 bar - EN60259Marine painting C5-M (1440h NSS)

Off-shore

Railways Avionic

Energy

Naval

Customized cylinder for launcher stabilizerLow operating temperature, down to -40°CSafety rod locking system

CKV servocylinder for steam turbines with high temperatures, up to 200°CSealing system for speeds up to 15 m/s

Compact plunger cylinderSpecial seals for high performanceNickel & chrome plated rod

Servoactuator for force control with built-in load cell and servoproportionalHigh working frequency, up to 15 Hz

Servocylinder for submerged operation in stainless steel with bronze head RINA certified

Military

User friendly software for assisted selection of Atos cylinders & servocylinders

• Cylinder’s sizing module - to support the designer in the correct selection of cylinder’s bore, rod, cushioning and seals

• 2D & 3D drawings in several CAD formats

• Application check module - to allow a quick technical validation of the cylinder according to the application data

• Trolley function for offer requests, orders, bill of materials, etc.

• Spare parts and Operation & Maintenance manuals

SWC cylinders designer

Available for download at catalog on-line - www.atos.com

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Materials

Heads and trunnionsMade of cast iron or steel. Materials tested with ultrasonic analysis

PistonMade of high resistance carbon steel and preloaded to avoid loosening and to improve thread fatigue life

RodHardened and tempered alloy steel with rolled threads to improve rod strength

Chrome-platingChrome thickness > 20 μm grants a corrosion resistance over 200h in NSS; the surface roughness Ra < 0,2 μm and Rmr > 50% ensure extended life of sealing system

Tie-rodsMade of normalized steel with rolled threads to improve strength

BodyCold drawn or hot rolled according to the cylinder size. Selected materials grant high safety factors for pressures up to 400 bar

Rod bearingMade of bronze bearings or guide rings for high radial loads and low friction

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Sealing systemsThe wide range of available sealing systems offers the best choice for any application, according to working speed, temperature and characteristics of the hydraulic fluidPolyurethane material ensures high hydraulic sealing, PTFE performs well at high speeds and with very low friction forces

Type 4 sealing system

Type 1 sealing system

frict

ion

[bar

]type material features speed

[m/s]fluid temp.

range

1 NBR + POLYURETHANE

high dynamic sealing 0,5 -20°C to 85°C

2 FKM + PTFE high temperatures 4 -20°C to 120°C

4 NBR + PTFE high speeds 4 -20°C to 85°C

6 NBR + PTFE single acting pushing 1 -20°C to 85°C

7 NBR + PTFE single acting pulling 1 -20°C to 85°C

8 PTFE + NBR + POLYURETHANE low friction 0,5 -20°C to 85°C

operating pressure [bar]

0,5

1,0

50 150 250

1,5seals 1 seals 8

seals 2, 4, 6, 7

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High performance sealing systemsType 0 - up to 15 HzPTFE with mineral fiber provides low friction and low wear at higher working frequenciesType 9 - low frictionSpecial polymer compound performs very low stick-slip and high sealing in heavy duty applications

Anticorrosion treatments

Ni + Cr plating Ceramic coating Geomet coating

Rod corrosion resistance up to 1000 h in NSS rating 10 to ISO 10289.Thickness: 30 μm Ni + 20 μm Cr

Multilayer ceramic coating applied on rod grants excellent corrosion resistance in harsh environments

Cylinder’s Geomet coating provides a corrosion protection > 1000 h in NSS.Thickness: 8-10 μm

For aggressive environments such as off-shore, chemical, railways, naval and military sectors

Type 0 Type 9

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Proximity sensorsProximity sensors detect rod position when the cylinder piston enters the influence area of the magnetic field generated by the sensor

Fixed proximity sensorsInductive sensors are available on standard cylinders to detect the rod position at the mechanical end stroke CKA ATEX cylinders can be supplied also with ex-proof sensors, ATEX certified EX II 3G T4 X

CKS cylinder

Adjustable proximity sensorsCKS cylinders are equipped with Reed or Hall effect sensors which are assembled on the tie-rods and positioned along the cylinder strokeCKSA ATEX cylinders are supplied with intrinsically safe sensors ATEX certified EX II 1 GD T4 and separate amplifier

Hall effect- Non-contact electronic sensor - Infinite electric life, non-wearing parts- High sensitivity and reliability- Max current: 250 mA

Reed- High switching power - 2 wire circuit for easy

connection- Max current: 500 mA

Fixed proximity sensors

Adjustable proximity sensors

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Hydraulic cushioningHydraulic cushioning is recommended for rod speeds higher than 0,05 m/s in applications without external softening system Atos cushioning profiles are designed to reduce rod speed before the rod contacts the cylinder end stroke, and to dissipate energy with limited pressure spikes

• Fast version designed for speed up to 1 m/s

• Slow version designed for speed from 0,05 to 0,5 m/s

• Adjustable version designed to allow optimization of cushioning according to rod speed

Rear cushioning

Cushioning chamber pressure

P max

pres

sure

realideal

end stroke

stroke

Speed during the cushioning

end stroke

spee

d

slowfast

strokeRegulation cartridge

Cushioning regulation

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Research & Development

FEM - Finite Element MethodFEM software performs a careful analysis of stress conditions for the most critical components of the cylinder, such as the rod threads, thus estimating the operative working life according to the application loads

Fluidodynamic simulationsAtos technical department uses fluidodynamic simulation softwares to design the best hydraulic cushioning according to required performance

Testing benchesThe automatic testing benches of Atos R&D department are equipped with high accuracy data acquisition systems and instruments in order to:• optimize cushioning performance • evaluate sealing friction• simulate loads and operating conditions of customer applicationsThe fatigue testing benches perform high frequency tests to estimate the operative working life of the cylinders R&D department

Research & developmentAtos R&D department is equipped with automatic testing benches with high accu-racy acquisition systems to improve performance and reliability of standard compo-nents and to help technical office on the design of hydraulic cylinders suited to thespecific customer requirements:• Cushioning testing bench: it allows to optimize the cushioning profile ensuringtop damping effect for the best cylinder reliability• Friction testing bench: it has been designed with the cooperation of The Politec-nic of Turin to measure sealing friction for several operating conditionsThe valuable know-how of Atos R&D department is supported by simulations soft-wares which allow to constantly improve the design of the cylinders targeting thebest reliability and strongest execution: FEM and Fluidodynamic software.

FEM - Finite Element Method

Alternate push and pull loads with highworking frequencies require a carefulanalisys of the rod thread strength whichis the cylinder’s max critical part. FEMsoftware allows to predict the expectedrod service life and to ensure the stron-gest design for any specific application.

Fluidodynamic simulations

Critical applications (i.e. high speed andshort cushioning strokes) require an accu-rate cushioning evaluation in order to eva-luate the effectiveness of these safetydevices. Technical department is providedwith fluidodynamic simulation software todesign the best cushion profile accordingto the customer requirements.

DVCDVC is a smart software for fast and efficient design of ISOstandard hydraulic cylinders. The codes’ assisted selec-tion and the DVC cylinder’s sizing tool drive step by stepthe user to identify the best cylinder for each application.Main functionalities:• 2D & 3D drawing can be easily directly imported in anyCAD system• Visualization of the cylinder with main installation di-mensions• Technical information on variants and options• Compilation modules for offer requests and orders

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37 RED department

100.000

10.000

1.000

100

10

0 20 40 60 80 100 1201

100.000

10.000

1.000

100

10

0 20 40 60 80 100 1201

Research & developmentAtos R&D department is equipped with automatic testing benches with high accu-racy acquisition systems to improve performance and reliability of standard compo-nents and to help technical office on the design of hydraulic cylinders suited to thespecific customer requirements:• Cushioning testing bench: it allows to optimize the cushioning profile ensuringtop damping effect for the best cylinder reliability• Friction testing bench: it has been designed with the cooperation of The Politec-nic of Turin to measure sealing friction for several operating conditionsThe valuable know-how of Atos R&D department is supported by simulations soft-wares which allow to constantly improve the design of the cylinders targeting thebest reliability and strongest execution: FEM and Fluidodynamic software.

FEM - Finite Element Method

Alternate push and pull loads with highworking frequencies require a carefulanalisys of the rod thread strength whichis the cylinder’s max critical part. FEMsoftware allows to predict the expectedrod service life and to ensure the stron-gest design for any specific application.

Fluidodynamic simulations

Critical applications (i.e. high speed andshort cushioning strokes) require an accu-rate cushioning evaluation in order to eva-luate the effectiveness of these safetydevices. Technical department is providedwith fluidodynamic simulation software todesign the best cushion profile accordingto the customer requirements.

DVCDVC is a smart software for fast and efficient design of ISOstandard hydraulic cylinders. The codes’ assisted selec-tion and the DVC cylinder’s sizing tool drive step by stepthe user to identify the best cylinder for each application.Main functionalities:• 2D & 3D drawing can be easily directly imported in anyCAD system• Visualization of the cylinder with main installation di-mensions• Technical information on variants and options• Compilation modules for offer requests and orders

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37 RED department

rods strengthcushioning

intermediate & differential rods

expected life - cyclesworking pressure - bar

pres

sure

- ba

r

Emax

[J] -

log

scal

e

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Atos Cylinders Division

• Production/year: over 30.000 cylinders

• 5.000 m2 under roof

• Rods, bodies and tie rods internally machined

Production facilities

CERTIFIEDISO 14001

CERTIFIEDBS OHSAS 18001

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3

5

7

2

4

6

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1 assembly area • 2 automatic testing bench ISO 10100 • 3 testing area for big bore cylinders • 4 servoactuators testing area • 5-6 workshop area with authomatic lathes • 7 storage department • 8 aerial view of assembling & testing plant

Cylinders Division Italy - 41122 Modena Z +39 059 250550 infocylinder@atos.comTC16

/E

cylinders & servocylinders

Atos spa Italy - 21018 Sesto Calende Z +39 0331 918370 info@atos.com www.atos.com