Catalogs >
ZwickRoell GmbH & Co. KG >
Product Information Servo-hydraulic testing machine - HCT range

Product Information Servo-hydraulic testing machine - HCT range
3Pages

Catalog excerpts

Product Information Servo-hydraulic testing machine - HCT range - 1

Range of application The HCT is a servo-hydraulic table-top testing machine with combined linear/rotary drive. It is used to determine material properties (of round or pipe specimens for example) under biaxial loading. Multiaxial fatigue tests on components are also possible as the drive unit is mounted on the upper crosshead and the frame is equipped with an integral T-slotted platform. Due to its size the HCT is also a natural choice for use in biomechanical applications, particularly for realistic loading of implants and prostheses. As the linear and torsion drives are configured independently of each other, single-axis tests are also possible; tensile/compression only or torsion only. Description of operation The machine consists of a compact, very stiff 2-column frame featuring high-precision alignment. The upper crosshead employs manual clamping and can be positioned using hydraulic lifting-cylinders. The load unit is mounted on the upper crosshead and consists of a linear actuator with hydrostatic bearings and a rotary actuator connected via a torsionally stiff length-compensating coupling. This design principle avoids linear movement of the rotary drive. The advantages are higher dynamic response, better simulation accuracy and longer service life for the rotary actuator. A high-precision displacement and angle measurement system is incorporated. The combined load cell/torque transducer can be attached to the piston rod or lower crosshead as required. The HCT must be installed on a stable base, for example a heavy workbench. In the case of critical tests or installation conditions and high frequencies we recommend use of the optional concrete base with vibration-damping feet. As the load frame is bolted on to it, it should also be used for frames with column extensions. The modern, high-performance Control Cube multichannel electronics are equipped with two measurement channels: force/displacement and torque/angle. Additional measurement channels are optionally available. Synchronous test data acquisition is employed; each measurement channel can also be used as a control channel. The entire test sequence is configured using Cubus testing software. The set values for the linear and rotary actuators are output synchronously. Advantages and features • 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

Open the catalog to page 1

Product Information Servo-hydraulic testing machine - HCT range - 2

Test-area height Dynamic nominal force Agioo - max. height of test frame Ak - tilted dimension for installation B — max. width of test frame C - max. depth of test frame D1 - distance between columns E - column diameter F - height of top edge of lower crosshead G - max. test area height1) H - max. working test area height2) J - Crosshead displacement range K - weight3) Frame stiffness at 1000mm crosshead separation T-slot connection dimensions Extended 250 Extended 500 Standard mm mm Clamping/ adjustment: manual/ hydraulic 1 Distance between upper and lower crossheads 2) Distance...

Open the catalog to page 2

Product Information Servo-hydraulic testing machine - HCT range - 3

Product Information Servo-hydraulic testing machine - HCT range Measurement and control electronics / software Cable, remote control, PC additionally required. Description Item number Control Cube servo controller - 2-channel 007998 Option: add-on for 4 instead of 2 amplifiers 008022 Cubus configuration module 035015 Cubus cyclic constant amplitude fatigue tests 035017 Cubus block program 034803 All data at ambient temperature. We reserve the right to make technical changes in the course of ongoing development.

Open the catalog to page 3