Servohydraulic machine for torsional oscillation

Industries

Metals
Automotive
Medical
Academia
Construction materials

Test load

10 kN - 250 kN
250 - 1000 Nm

Type of test

Tensile incl. torsional oscillation
Compression incl. torsional oscillation

The testing machine for determination of torsional oscillation

The HCT and HBT series servohydraulic testing machines are used for the determination of torsional oscillation or tension/torsion tests.

These machines have a torsion testing actuator mounted on the upper crosshead. The HC and HB series variant can be used for combined tensile, compression and torsion loading. The optional T-slotted platform makes these machines very versatile.

The final element in our dynamic testing product portfolio is the manufacture of all the necessary accessories such as hydraulic power packs, servohydraulic testing actuators, or hydraulic distribution units. Our portfolio is constantly being expanded through a program of continuous development and inclusion of new products, allowing us to satisfy our customer’s most demanding quality requirements while continually improving the quality of our products.

Advantages & Features

Description

The HCT series table-top model covers test loads up to 10 kN or 25 kN for servohydraulic oscillating torsion.

Testing actuator stroke 100 mm
Torque 250 Nm
Angle of rotation 100° (280° optional)

The HBT series floor-standing model covers test loads up to 250 kN for servohydraulic oscillating torsion.

Testing actuator stroke 100 mm
Torque 1000 Nm
Angle 100°
Additional details upon request

Advantages of the HCT

2-column frame for dynamic tests up to 25kN / 250 Nm
hydraulic adjustment and manual clamping of upper crosshead
testing actuator installed in upper crosshead
suitable for combined linear/rotary drive at 10 kN /100 Nm and 25 kN / 250 Nm
torsionally stiff, backlash-free length-compensating coupling
hydrostatic-bearing, sealless linear actuator
hard-chromed T-slotted platform and columns for tests in corrosive media
safety housing to comply with CE Machinery Directive depending on application
option: hydraulic wedge grips for tensile/compression-torsion tests

Hydraulic power pack 40 l/min without noise protection

Hydraulic power packs

The HP series power packs feature high operational reliability and long service life. All components are mounted on top of the oil tank for easy access.

The self-priming radial-piston pump is driven by an asynchronous motor. The nine pistons are in hydrostatically balanced contact with the stroke ring. Flow rate is regulated by the stroke-ring eccentricity, which is adjusted via two control pistons located opposite each other. The pressurized oil is routed via a high-pressure filter and is then available to the appliance.A factory-set pressure relief valve prevents excessive increases in pressure.

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servohydraulic actuator

ZwickRoell's servohydraulic testing actuators feature sturdy, robust construction and are used both in servohydraulic testing machines and as single testing actuators, for example on a clamping plate. When used in conjunction with a servo valve they enable complex loading sequences to be implemented with great accuracy.

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Hydraulic connection unit

The hydraulic distribution unit is the electrically operated switching device in servohydraulic testing machines. It connects or disconnects the hydraulic pressure for a servohydraulic testing actuator or servohydraulic testing machine.A connecting valve is allocated to each consumer, allowing them to be switched independently of each other. The modular design enables addition of an extra switching manifold whenever required.

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Technical overview

Test-area height	Standard	Extended 250 mm	Extended 500 mm
Dynamic nominal force	25	25	25	kN
A_G100 – max. height of test frame	2310	2560	2810	mm
A_K - tilted dimension for installation	1750	1995	2240	mm
B — max. width of test frame	660	660	660	mm
C – max. depth of test frame	500	500	500	mm
D1 - distance between columns	460	460	460	mm
E – column diameter	65	65	65	mm
F - height of top edge of lower crosshead	215	215	215	mm
G – max. test area height¹	1000	1250	1500	mm
H – max. working test area height²	910	1160	1410	mm
J - Crosshead displacement range	600	600	600	mm
K - weight³	435	450	465	kg
Frame stiffness at 1000mm crosshead separation	300	300	300	kN/mm
T-slot connection dimensions	as per DIN 508 M10 x 12, spacing 80 mm Ø 70 mm, 6 x M8 (only 6 bolts) and Ø 115 mm, 4 x M8
Clamping/ adjustment: manual/hydraulic	935275⁴	936110⁴	936259⁴

Distance between upper and lower crossheads
Distance between piston flange and base crosshead with piston retracted
Weight with actuator unit
Secure, stable mounting on support required; base 935284 recommended

Do you have any questions regarding our products?

Please feel free to contact our product experts.
We look forward to discussing your needs.

Downloads

Product information: HCT servohydraulic testing machine (torsion) PDF 308 KB
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- EN
Product information: Hydraulic distribution unit PDF 396 KB
- DE
- EN
Product information: Hydrostatic single testing actuator 10-50 kN PDF 540 KB
- DE
- EN
Product information: Hydrostatic single testing actuator 100-1000 kN PDF 480 KB
- DE
- EN
Product information: 20 l/min. hydraulic power pack PDF 567 KB
- DE
- EN
Product information: 40 l/min. hydraulic power pack PDF 567 KB
- DE
- EN
Product information: 80 l/min. hydraulic power pack PDF 598 KB
- DE
- EN
Product information: 170 l/min. hydraulic power pack PDF 391 KB
- DE
- EN
Product brochure: Dynamic PDF 5 MB
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- EN

HCT/HBT servohydraulic testing machine

The testing machine for determination of torsional oscillation

Advantages & Features

Advantages & Features

Description

Advantages of the HCT

Hydraulic power packs

servohydraulic actuator

Hydraulic connection unit

Technical overview

Related products and accessories

Downloads