multipurpose dynamic servohydraulic testing systems series …

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walter+bai Testing Machines

Materials Testing SystemsDYNAMIC

Multipurpose Dynamic Servohydraulic Testing SystemsSeries LFV

In rigid 2-column-constructions for superior axi-al and lateral stiffness Precision aligned for ad-vanced testing according to relevant standards.

Options for Testing Actuator

• mounted on upper crosshead

• integrated in the machine base

Options for Hydraulic Power Supply

• integrated in the machine base

• separate free standing power pack

Options for Crosshead Adjustment

M Lock: Mechanical Lift: Manual

ME Lock: Mechanical Lift: Electrical

HM Lock: Mechanical Lift: Hydraulic

HH Lock: Hydraulic Lift: Hydraulic

Features• Machine can be equipped with integral

T-slot platen suitable to fi x components,

specimens or manufactured assemblies.

• Compression platens or bending / folding

devices may be fi xed direct into wedge

grips or interfaced with backlash-free

washers.

• Manifold is attached direct on actuator

providing close-coupled servovalve and

accumulators for improved performance.

• Equal area actuator with hydrostatic

bearings mounted on crosshead or inte-

grated in the machine base.

• Columns are chrome plated and hard-

ened for easy cleaning and longest life.

• Dynamic rated Precision fl at load cell

mounted on piston rod end

• Integrated displacement transducer.

• Including grip control system mounted di-

rectly at the machine.

Load FrameThe Series LFV load frames are designed for

precision Testing for a wide range of dynamic

applications. They are rigid two- or four-col-

umn construction for superior axial and later-

al stiffness and precision aligned ensure con-

sistent loading is applied to specimen. If the

actuator is mounted on upper crosshead the

machine having a integral T-slot platen suita-

ble to fi x grips or fi xtures, components, speci-

mens, manufactured assemblies or fi nished

goods. The actuator is well suited for high

piston speed at virtually service-free fatigue

testing with manifold attached direct on actu-

ator providing close-coupled servovalve and

accumulators for improved performance with

highest possible respond and reduced pres-

sure fl uctuations. To facilitate re-positioning,

the upper crosshead of the Series LFV is ad-

justable and the columns are chrome plated

for easy cleaning and longest life.

ActuatorPart of the load frame of the Series LFV is a

double ended, in equal area constructed ac-

tuator to generate equal axial force in tension

and compression with hydrostatic bearings.

The hydrostatic bearings provides extremely

low fi ction for the most accurate control and

longest reliable lifetime at full ratings. A pre-

cision displacement transducer is integrated

in the actuators. They are well suited for all

types of testing (from static to dynamic) and

are known for their excellent fatigue reliabili-

ty, accuracy and repeatability. These actuators

are the most versatile and by far the most

popular solution for all types of the Series LFV

multipurpose testing machines.

Load CellThe dynamic testing systems are equipped

with precision fatigue rated load cells for

accurate force measurement and control.

They are either mounted on actuators pis-

ton rod end as required for component, fi n-

ished goods or biomedical test applications

or otherwise on upper crosshead / alignment

fi xture.

Hydraulic Power SupplyThe dynamic performance of a particular Test

System is governed by oil fl ow and pressure.

The Series LFV with force capacities up to

50 kN and actuator on crosshead are availa-

ble with in the machine base integrated pow-

er supply with up to 8 l/min oil fl ow. For larg-

er oil fl ows the full range of external power

packs with ratings up to 500 l/min or even

higher is available to suit your requirements.

The power packs includes beside of the hy-

draulic system also all electrical parts as in-

dicators and system management buttons. As

cooling systems air/oil cooler, water/oil cool-

er or alternative closed loop re-cooler system

are available.

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Materials Testing Systems DYNAMIC

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Table-TopDynamic Testing SystemsSeries LFV – L 1 - 25 kN

These fatigue rated systems represents the ide-

al solution to perform a large variety of static

and dynamic materials tests. This series is well

suited to perform static tension, compression,

fl exure and shear tests, LCF - low cycle fatigue

testing, fatigue crack growth testing, fracture

toughness testing, further typically applications

includes testing of biomechanical products and

implants and more. The load frame features rig-

id designed with high axial and lateral stiffness

with high natural frequency. The upper cross-

head is mechanically clamped and features au-

tomatic, motorized, positioning (lifting/lower-

ing). Integrated in the upper crosshead is the

fatigue rated actuator with co-axially mount-

ed displacement transducer. The manifold with

servo valve is mounted direct on the actuator

for the highest possible response and most ac-

curate test control. The close coupled accumu-

lators minimize the hydraulic pressure fl uctua-

tions. The fatigue rated, low-profi le, low mass

designed precision load cell features high natu-

ral frequency and excellent long term stability.

The LFV-L is available with the alignment fi x-

ture for the adjustment of load string alignment

complying with ASTM E1012 or other stand-

ards. It is capable to perform alignment adjust-

ments while the load train is fully preloaded.

As accessory the alignment verifi cation equip-

ment with strain-gauged specimen, electron-

ic and software is available. The system is sup-

plied with the state-of-the-art machine base. As

space saving system the solution with integrat-

ed hydraulic power pack up to 6 l/min. oil fl ow

is available. Otherwise the machine is supplied

with the low noise free standing hydraulic pow-

er pack Series PAC. To meet the full range of

mechanical testing needs the LFV-L can be con-

fi gured with a variety of grips and fi xtures, ex-

tensometers, environmental chambers, different

software packages and other accessories. The

LFV-L is also available with axial/ torsional drive,

upgrading your system from axial only to axial/

torsional performance. Standard ratings are 20,

50, 100 and 200 Nm. The torsional angle can

be chosen to meet your specifi c testing needs.

Versatile and compact test systems confi gura-ble to meet the demands of modern testing laboratories, R & D centres, institutes and uni-versities. The Series LFV - L tabletop systems are currently available in with force capacities ranging from 1 kN up to 25 kN.

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Specifi cations

Accuracy In accordance with ISO 7500-1 and EN 10002-2, Grade 0.5.

Control Standard: force and displacement closed loop controlled. Option: with extensometer strain closed loop controlled.

Actuator Mounted on upper crosshead.

Piston Stroke Standard: ±50 mmOption: ±75, ±100 or ±125 mm

Crosshead Adjustment Standard: ME mechanically locked and electrical adjustment. Option: M mechanically locked and manual adjustable.

Hydraulic Power Pack Standard: Integrated in the base of the machine. Option: Free standing power pack for higher oil fl ows.

Power Requirements 3 x 400 V, 50 Hz. Others upon request.

Type LFV - L 1 / 2.5 6 10 16 25

Max. Test Load Static kN ±2.5 ±6 ±10 ±16 ±25

Max. Test Load Dynamic kN ±2 ±5 ±8 ±12 ±20

Piston Stroke (Kh) mm ±50 ±50 ±50 ±50 ±50

Max. Distance betw. Adapters (Ph) mm 765 765 765 765 765

Distance betw. Columns (LW) mm 440 440 440 440 440

Column Diameter (Sd) mm 80 80 80 80 80

Width (B) mm 730 730 730 730 730

Depth (T) mm 500 500 500 500 500

Height (H) mm 1850 1850 1850 1850 1850

Weight Frame kg 150 150 150 150 150

Frame Stiffness kN/mm 110 110 110 110 110

Working Height with Base mm 1100

Total Dimensions with Base mm 1400 x 790 x 2835

Weight Base without PAC kg 140 140 140 140 140

Weight Base with PAC kg 350 350 350 350 350

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Compact Low Force Dynamic Testing SystemsSeries LFV 1 – 10 kN

Actuator

mounted on upper crosshead

Crosshead Options

Standard: ME

Option: M

Hydraulic Power Options

Standard: integrated in base

Option: separate free standing

This multipurpose dynamic testing system

features the innovative electrical height ad-

justment for quick and accurate positioning

of the upper crosshead for different sizes of

specimens and different testing devices.

Also a salt bath for testing of implants in salt

solution up to 37° can be mounted into the

machine. The bath can easily be moved in and

out of the testing chamber.

Features• Rigid two-column construction

• Precision aligned


bearings mounted on top of crosshead



accumulators for improved perform-

ance and reduced pressure fl uctuations

• Upper crosshead adjustable to facilitate

repositioning.


ened for easy cleaning and longest life

• Precision fl at load cell mounted on pis-

ton rod end.

• Integrated displacement transducer

• Compression platens, bending or fold-

ing devices may be fi xed directly into

wedge grips or backlash-free washers.

Specially designed for fatigue testing of low strength materials such as biomedical implants and dental implants as well as plastics, alumini-um, elastomers, components and fi nished goods. The upper crosshead features the innovative electrical height adjustment for quick and accu-rate positioning for test set-up.

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Type LFV 1 2.5 6 10

Max. Test Load Static kN ±1 ±2.5 ±6 ±10

Max. Test Load Dynamic kN ±1 ±2 ±5 ±8

Piston Stroke (Kh) mm ±25 ±25 ±25 ±25

Max. Distance betw. Adapters (Ph) mm 800 800 800 800

Distance betw. Columns (LW) mm 440 440 440 440

Column Diameter (Sd) mm 50 50 50 50

Working Height (A) mm 800 800 800 800

Width (B) mm 650 650 650 650

Depth (T) mm 900 900 900 900

Height (H) mm 2400 2400 2400 2400

Weight (without Grips) kg 480 480 480 480

Frame Stiffness kN/mm 80 80 80 80

Specifications




Piston Stroke Standard: ±25 mmOption: ±50, ±75, ±100 or ±125 mm

Crosshead Adjustment Standard: ME mechanically locked and electrical adjustment. Option: M mechanically locked and manual adjustable.

Hydraulic Power Pack Standard: Integrated in the base of the machine. Option: Free standing power pack for higher oil flows.


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Compact Dynamic Testing SystemsSeries LFV 10 - 63 kN

Actuator


Crosshead Options

Standard: HH

Option: M, HM


Standard: integrated in base

Option: separate free standing

These compact testing systems have the hy-

draulic power pack integrated in the base of

the machine. These machines are self-con-

tained, stand-alone units. The actuator is

mounted on the upper crosshead. The ma-

chines are equipped with integral T-Slot plat-

en suitable to fi x components, specimens or

manufactured assemblies. The standard mod-

el features the hydraulically moveable cross-

head with passive clamping for an easy and

accurate positioning of the upper crosshead.

Features• Rigid two-column construction

• Precision aligned


bearings mounted on top of crosshead

• Manifold is attached direct on actua-

tor providing close-coupled servo

valve and accumulators for improved

performance and reduced pressure

fl uctuations.

• Upper crosshead hydraulically adjust-

able to facilitate repositioning.


ened for easy cleaning and longest life

• Precision fl at load cell mounted on pis-

ton rod end.

• Integrated displacement transducer.

Specially designed for fatigue testing and re-search of biomedical implants, advanced mate-rials, components, manufactured assemblies or fi nished goods.The crosshead features automatic adjustment with hydraulic unlocking and hydraulic moving through two long stroke actuators.

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Specifications





Crosshead Adjustment Standard: HH hydraulic unlocking and hydraulic lift. Option: M mechanically locked and manual adjustable. HM mechanically locked and hydraulic lift.

Hydraulic Power Pack Standard: Integrated in the base of the machine. Option: Free standing power pack for higher oil flows.


Type LFV 10 16 25 40 63

Max. Test Load Static kN ±10 ±16 ±25 ±40 ±63



Max. Distance betw. Adapters (Ph) mm 700 700 700 700 700



Working Height (A) mm 880 880 880 880 880

Width (B) mm 750 750 750 750 750

Depth (T) mm 900 900 900 900 900

Height (H) mm 2550 2550 2550 2550 2550

Weight (without Grips) kg 850 850 850 850 850


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Multipurpose Dynamic Testing SystemsSeries LFV 100 - 600 kN

Actuator


Crosshead Options

Standard: HH

Option: M, HM


Standard: separate free standing

The cylinder of this Series LFV is mounted on

the upper crosshead. The power pack is a

freestanding unit and can be placed in a sep-

arate room. The machines can be equipped

with integral T-slot platen suitable to fi x com-

ponents, specimens or manufactured assem-

blies. The machine can be confi gured with cli-

matic chambers, high temperature furnaces,

testing devices and other accessories to suit

your specifi c testing needs.

Features• Hydraulic adjustable upper crosshead

to facilitate quick, easy, and accurate

positioning with passive clamping sys-

tem and adjustment by two long stroke

actuators.

• Equipped with integral T-slot platen

suitable to fi x components, specimens

or manufactured assemblies.

• Chrome plated and hardened columns

for easy cleaning and longest life.

• High quality actuator with hydrostatic

bearings for the best static and dynam-

ic performance in different specifi ca-

tions to depending on application.

• Actuator available with integrated dis-

placement transducer and with anti-

rotation system to prevent the natural

tendency to rotate.



accumulators for improved perform-

ance and reduced pressure fl uctuations

• Precision fl at load cell mounted on

piston rod end and displacement

transducer.

Versatile servohydraulic testing systems for higher capacity applicable for the fully spectrum of static and dynamic testing. The actuator is mounted on upper crosshead and the lower platen can be supplied with T-Slots for the ultimate fl exibility.

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Specifications






Hydraulic Power Pack Standard: Free standing power pack.


Type LFV 100 150 250 400 600

Max. Test Load Static kN ±100 ±150 ±250 ±400 ±600



Max. Distance betw. Grips (Ph) mm 1000 1080 1200 1200 1080



Working Height (A) mm 750 800 550 550 900

Width (B) mm 1220 1050 1050 1050 1190

Depth (T) mm 1000 600 800 800 750

Height (H) mm 3330 3600 3800 3800 4550

Weight (without Grips) kg 1800 1900 2900 2900 6500


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Compact MultipurposeDynamic Testing SystemsSeries LFV 63 - 600 kN

Actuator

integrated in the base

Crosshead Options

Standard: HH

Option: M, HM


Standard: separate free standing

These machines with its high natural frequen-

cy have the actuator integrated in the base of

the machine. The alignment fi xture is fi xed on

upper crosshead and provides alignment ad-

justment of the load string complying with

ASTM E1012 and other international standard

as required for LCF and other tests. As acces-

sories the alignment verifi cation equipment

with stain-gauged specimen (rod), electronic

and software is available. This self-supporting

unit is optimized for higher frequencies and

requires no special foundation. The frame with

its movable crosshead by two double acting

actuators provides accurate positioning, large

and easy accessible test space and allows the

integration of fracture toughness bending fi x-

ture, environmental or vacuum chamber or

high temperature furnace.

Features• High stiffness construction, precision

aligned

• Movable upper crosshead for facilitate

quick, easy, and accurate positioning by

two long-stroke actuators

• Passive clamping system

• Inductive hardened, grounded and

chromium plated column

• Double ended, equal area linear actua-

tor with hydrostatic bearings for the

best friction free static and dynamic

performance, allows high side-loads

and emergency running, integrated in

machine’s base to shorten the force

train.

• Integrated LVDT displacement

transducer

• Servovalve with manifold mounted di-

rect on the actuator for the highest

possible response and most accurate

test control

• Close coupled accumulators to mini-

mize hydraulic pressure fl uctuations

and fi lter is mounted direct at the

actuator

• High precision fatigue rated fl at load

cell for static and fatigue tests fi xed on

upper crosshead

Advanced high performance solution for Stat-ic, Fracture Toughness, LCF, Thermo Mechanical Fatigue (TMF), Fatigue Crack Growth and High Cycle Fatigue Testing. Servohydraulic Testing Machine in rigid construction with high axial and lateral stiffness, and precision aligned to satisfy a wide range of different test types.

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Specifications



Actuator Integrated on upper crosshead.



Hydraulic Power Pack Standard: Free standing power pack.


Type LFV 63 100* 150 250 400 600

Max. Test Load Static kN ±63 ±100 ±150 ±250 ±400 ±600

Max. Test Load Dynamic kN ±50 ±80 ±120 ±200 ±320 ±500

Piston Stroke (Kh) mm ±50 ±50 ±50 ±50 ±50 ±50

Max. Distance betw. Grips (Ph) mm 800 950 950 1150 800 800

Distance betw. Columns (LW) mm 550 650 650 650 650 700

Column Diameter (Sd) mm 80 100 100 100 100 120

Working Height (A) mm 800 800 800 800 800 900

Width (B) mm 900 1100 1100 1050 1050 1300

Depth (T) mm 600 600 600 600 600 850

Height (H) mm 2500 2800 2800 3125 3125 3300

Weight (without Grips) kg 980 1500 1500 1990 1990 2800

Frame Stiffness kN/mm 250 750 750 1000 1000 1300

* HM and M Versions same as load frame Type LFV 63

multipurpose dynamic servohydraulic testing systems series …

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