Zwick/ZHU250
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Catalog excerpts

Zwick Materials testing Zw/ck / RoellProduct Information Servo-hydraulic load frames - HB series, 2-column Z960Z 9960Z :V10 3 f60 0S9ld HB100 with T-slotted platform and mechanical grips Range of application HB servo-hydraulic testing machines have the testing actuator mounted on the upper crosshead. This makes them extremely versatile in use, especially the version with integrated T-slotted platform, enabling flexure tests and component testing in addition to standard fatigue tests. The load cell can be attached to the lower crosshead or directly to the piston rod, depending on the application. Description of operation These 2-column load frames are designed for materials and component testing under dynamic loading in a closed force-flow. The frame is supported on vibration-isolating leveling units so that no appreciable forces are transmitted to the floor during normal operation. Where tests or environmental conditions are critical in nature, the use of optionally available air-springs is advisable; these have a natural frequency of approximately 3 - 6 Hz. The efficiency of the testing system is enhanced by the especially high axial and lateral stiffness of the HA load frames, enabling higher frequencies and specimen deformations Moreover, high lateral forces which may occur in compression and flexure tests can be absorbed without difficulty. The frames also feature extremely precise alignment; Following installation of the testing actuator and load cell, alignment accuracy is +0.1 mm per meter separation; at distances below 350mm the offset is constant at 0.05mm. Plane-parallelity of mounting surfaces is equal to or better than 0.03 mm per 100 mm. All fixtures and Zwick load cells are mounted via flanges with centering-spigot. Advantages and features • 4 standard nominal ratings from 50 kN to 500 kN • testing actuator mounted on upper crosshead • convenient working height • hydraulic clamping and adjustment for easy positioning of upper crosshead • comprehensive range of accessories, including hydraulic grips, compression platens, flexure test kit etc. • safety housing for compliance with CE Machinery Directive • version with integrated T-slotted specimen ideal for fatigue tests on components

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Zwick Materials testing Zw/ck / RoellProduct Information Servo-hydraulic load frames - HB series, 2-column kN Technical data Dynamic nominal force 50 100 250 500 Crosshead clamping electro- electro- electro- electro- hydraulic hydraulic hydraulic hydraulic Crosshead adjustment electro- electro- electro- electro- hydraulic hydraulic hydraulic hydraulic Agioo - max. test-frame height with 3175 (3675)1) 3259 (3759)1) 3523 (4023)1) 4045 (4545)1) 100mm-stroke actuator Ag250 - max. test-frame height...

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