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ZwickRoell Pvt. Ltd.
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Servohydraulic Load Frames

Servohydraulic Load Frames

FromZwickRoell Pvt. Ltd.

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The load frames of ZwickRoell’s servohydraulic testing machines have been specially designed for specific fatigue testing requirements, which is reflected in their high frame stiffness, among other things. They are used to determine material characteristic values under vibrating loads, including S-N tests (high cycle fatigue tests), LCF tests (low cycle fatigue) or fracture mechanics tests. Depending on testing requirements and the need for ergonomic working conditions in everyday tests, the testing actuator is mounted either above or below the test area. A separate hydraulic power pack is required for the servohydraulic load frames. ZwickRoell offers hydraulic power packs with different power levels, allowing the servohydraulic load frames to be adapted to specific customer requirements.

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While the load frames of the HA and HB series are floor-standing, allowing equipment assembly at an optimum operating height, the servohydraulic load frames of the HC series, both 10 kN and 25 kN, are table-top models. A matching concrete base ensures ergonomic working height.

In the servohydraulic HC table-top load frame, the testing actuator is located above the test area. The hard-chromed T-slot platform in the test area as well as the columns of the test frame are suited for testing under corrosive media.

An optional hydraulic adjustment facilitates the positioning of the upper crosshead.

The HA series servohydraulic load frames are available in standard versions (Fmax) 50 kN, 100 kN, 250 kN and 500 kN.

With the testing actuator mounted in the lower crosshead, the HA series represents the typical servohydraulic testing machine used for determining material properties under cyclic loading. It is particularly suitable for tests requiring the use of temperature chambers or high-temperature furnaces.

The upper crosshead is adjustable, with optional hydraulic crosshead clamping and lift cylinders. The testing actuator stroke is 100 mm or 250 mm. The servohydraulic testing machine can be supplied for 210 bar or 280 bar system pressure.

The HB series servohydraulic load frames are available in standard versions (Fmax) 50 kN, 100 kN, 250 kN, 500 kN, 1,000 kN and 2,500 kN.

In the HB series, the testing actuator is located above the test area. These machines are particularly versatile. The version with integrated T-slotted platform allows flexure tests and component testing to be performed in addition to standard high cycle fatigue tests. The load cell can be mounted on the lower crosshead or directly onto the piston rod, depending on the application.

A wide range of acessories, including hydraulic grips, compression platens, flexure test kits, and more, complete the system.