{"product_id":"electro-hydraulic-servo-compression-tester","title":"Electro-Hydraulic Servo Compression Tester","description":"\u003ch2\u003eElectro-Hydraulic Servo Compression Testing Machine QT-EHC | 2000 kN \u0026amp; 3000 kN\u003c\/h2\u003e\n\u003cp\u003eThe QT-EHC electro-hydraulic servo compression testing machine provides precise closed-loop load control for laboratories testing cement, concrete, and structural building materials. Available in 2000 kN and 3000 kN capacities, it accommodates cube specimens from 50 mm to 200 mm and cylinder specimens up to 160 mm in diameter and 320 mm in height. Continuous closed-loop force regulation by the servo drive keeps the machine within Class One accuracy. Each model comes with an integrated computer and control console that displays load, time, and load-displacement curves in real time.\u003c\/p\u003e\n\u003cp\u003eAn electric-screw mechanism sets the compression space before every test, so switching between specimen heights is quick. Users can configure the loading rate to match the applicable test standard. When a test ends, the control software calculates and prints compressive strength, flexural strength, and other mechanical test data automatically. The maximum test force hold function records peak load at specimen fracture, with no manual capture needed, and the servo feedback loop keeps force output stable from the start of the test until the specimen fails.\u003c\/p\u003e\n\u003cp\u003eSafety is built in on both models, with a pressure safety valve, piston limit switch, and removable front and rear guards fitted as standard. A self-aligning ball seating assembly in the upper compression platen spreads load evenly across irregular specimen surfaces. Platens are rated at 50 HRC surface hardness, giving long service life under repeated high-load cycles. The load frame and control console are supplied as separate units, which helps keep the laboratory footprint compact.\u003c\/p\u003e\n\u003ch2\u003eElectro-Hydraulic Servo Compression Testing Machine QT-EHC Applications\u003c\/h2\u003e\n\u003cp\u003eThe QT-EHC electro-hydraulic servo compression testing machine serves construction materials laboratories, quality control facilities, and research institutions that need reliable compressive and flexural strength testing of cement, concrete, and related structural materials.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eConcrete Quality Control: Compression testing of concrete cube and cylinder specimens to confirm batch-to-batch strength consistency in ready-mix and precast concrete production.\u003c\/li\u003e\n\u003cli\u003eCement and Mortar Testing: Compressive and flexural strength evaluation of cement mortar specimens to verify compliance with mix design requirements.\u003c\/li\u003e\n\u003cli\u003eConstruction Materials Research: Testing of concrete mixes, admixtures, and supplementary cementitious materials in academic and industrial R\u0026amp;D programs.\u003c\/li\u003e\n\u003cli\u003eInfrastructure and Civil Engineering Labs: Verification testing of concrete samples taken from bridges, buildings, roads, and retaining structures.\u003c\/li\u003e\n\u003cli\u003eBrick, Block, and Masonry Products: Compression testing of masonry units and paving blocks to assess load-bearing capacity and production consistency.\u003c\/li\u003e\n\u003cli\u003eRock and Aggregate Testing: Compressive strength determination on rock cores and aggregate specimens for quarrying, mining, and geotechnical work.\u003c\/li\u003e\n\u003cli\u003eThird-Party and Commercial Testing Labs: Accredited testing services for material suppliers, developers, and contractors who need documented compressive strength results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 dir=\"ltr\"\u003eElectro-Hydraulic Servo Compression Testing Machine QT-EHC Key Features\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003eThe QT-EHC combines closed-loop servo control, automated data output, and broad specimen compatibility across two load frame capacities, 2000 kN and 3000 kN.\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eElectro-Hydraulic Servo Drive: Closed-loop force control through a servo valve, with real-time feedback regulation, keeps the loading rate accurate and stable throughout every test cycle.\u003c\/li\u003e\n\u003cli\u003eElectric-Screw Compression Space Adjuster: Motorized height adjustment positions the upper platen before hydraulic engagement. Coarse setup is kept separate from precise load application, which shortens changeover time between specimen types.\u003c\/li\u003e\n\u003cli\u003eAutomated Test Data Calculation and Reporting: The control software computes compressive strength, flexural strength, and other mechanical test data, then prints the results when the test ends. No manual post-test calculation is needed.\u003c\/li\u003e\n\u003cli\u003eDynamic Load-Curve Display: Load, elapsed time, and load-displacement curves appear in real time on the integrated control console during every test.\u003c\/li\u003e\n\u003cli\u003eMaximum Test Force Hold: Peak applied force is captured and held at specimen fracture, so maximum load data is recorded accurately without timed manual observation.\u003c\/li\u003e\n\u003cli\u003eWide Specimen Compatibility: Handles 50 mm, 100 mm, 150 mm, and 200 mm cube samples, plus cylinder specimens from 75 mm to 160 mm in diameter and 150 mm to 320 mm in height.\u003c\/li\u003e\n\u003cli\u003eBall-Seated Self-Aligning Upper Platen: The platen pivots to compensate for surface irregularities and spreads compressive load evenly across the bearing area on both models.\u003c\/li\u003e\n\u003cli\u003e50 HRC Compression Platen Hardness: All platens are hardened to 50 HRC, giving long service life under repeated high-load testing.\u003c\/li\u003e\n\u003cli\u003ePressure Safety Valve and Piston Limit Switch: Automatic overload protection and stroke-limit control guard the machine and specimens during testing.\u003c\/li\u003e\n\u003cli\u003eRemovable Front and Rear Guards: Standard on both models, the guards contain fracture debris while keeping the test zone clearly visible.\u003c\/li\u003e\n\u003cli\u003eComputer and Control Console Included: Both capacity models are supplied with a dedicated computer and protective console, forming a complete, ready-to-run testing station with no extra purchases.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 dir=\"ltr\"\u003eTheory and Method of Electro-Hydraulic Servo Compression Testing\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003eElectro-hydraulic servo compression testing drives a hydraulic actuator through a servo valve under closed-loop electronic feedback. The controller reads a load cell or pressure transducer and adjusts hydraulic oil flow in real time to match the commanded load rate. Because of this feedback loop, the loading rate stays steady regardless of specimen stiffness or geometry, which maintains the constant stress rate that structural material test standards require. Open-loop hydraulic systems behave differently, since their application rate drifts as specimen resistance changes.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn a compression test, the specimen sits between the lower and upper platens, and the ball-seated upper platen pivots to spread force evenly across the bearing surface. As load increases, the specimen deforms until fracture occurs and the applied load drops. The controller captures the peak force, and the software calculates compressive strength by dividing peak load by bearing area. Test data and printed reports are generated automatically when the test is complete.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe electric-screw adjuster brings the upper platen close to the specimen surface before the hydraulic loading system engages. Coarse mechanical positioning is therefore kept apart from precise servo-controlled loading, which reduces unnecessary hydraulic duty during setup and extends component service life. The piston stroke covers only the active loading travel, so force application stays within the most accurate operating range of the servo system. Keeping height adjustment separate from force application also shortens cycle time between consecutive specimen tests.\u003c\/p\u003e\n\u003ch2\u003eElectro-Hydraulic Servo Compression Tester - QT-EHC Technical Specifications\u003c\/h2\u003e\n\u003cp\u003eThe QT-EHC is available in two load frame capacities:\u003c\/p\u003e\n\u003ctable class=\"table\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\" width=\"624\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eQT-EHC 300\u003c\/th\u003e\n\u003cth\u003eQT-EHC 360\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Load Capacity\u003c\/td\u003e\n\u003ctd\u003e2000 kN\u003c\/td\u003e\n\u003ctd\u003e3000 kN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy Class\u003c\/td\u003e\n\u003ctd\u003eClass One\u003c\/td\u003e\n\u003ctd\u003eClass One\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompression Space\u003c\/td\u003e\n\u003ctd\u003e320 mm\u003c\/td\u003e\n\u003ctd\u003e340 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePiston Stroke\u003c\/td\u003e\n\u003ctd\u003e50 mm\u003c\/td\u003e\n\u003ctd\u003e80 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUpper Compression Plate Size\u003c\/td\u003e\n\u003ctd\u003e240 × 240 mm\u003c\/td\u003e\n\u003ctd\u003e265 × 265 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLower Compression Plate Size\u003c\/td\u003e\n\u003ctd\u003e300 × 250 mm\u003c\/td\u003e\n\u003ctd\u003e360 × 285 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoad Frame Dimensions (L × W × H)\u003c\/td\u003e\n\u003ctd\u003e700 × 430 × 1350 mm\u003c\/td\u003e\n\u003ctd\u003e750 × 500 × 1500 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Console Dimensions (L × W × H)\u003c\/td\u003e\n\u003ctd\u003e1100 × 550 × 900 mm\u003c\/td\u003e\n\u003ctd\u003e1100 × 550 × 900 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e380 V (220 V optional), 50 Hz (60 Hz optional), 2.0 kW\u003c\/td\u003e\n\u003ctd\u003e380 V (220 V optional), 50 Hz (60 Hz optional), 2.0 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1090 kg\u003c\/td\u003e\n\u003ctd\u003e1640 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard Configuration\u003c\/td\u003e\n\u003ctd\u003eComputer included, protective cover\u003c\/td\u003e\n\u003ctd\u003eComputer included, protective cover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Cube Specimens\u003c\/td\u003e\n\u003ctd\u003e50 mm, 100 mm, 150 mm, 200 mm\u003c\/td\u003e\n\u003ctd\u003e50 mm, 100 mm, 150 mm, 200 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Cylinder Specimens\u003c\/td\u003e\n\u003ctd\u003e75–160 mm dia., 150–320 mm height\u003c\/td\u003e\n\u003ctd\u003e75–160 mm dia., 150–320 mm height\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompression Platen Surface Hardness\u003c\/td\u003e\n\u003ctd\u003e50 HRC\u003c\/td\u003e\n\u003ctd\u003e50 HRC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Qualitest USA LC","offers":[{"title":"Default Title","offer_id":53229281935671,"sku":null,"price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/1859\/1543\/files\/electro-hydraulic-servo104326561.webp?v=1791870385","url":"https:\/\/qualitest.us\/es\/products\/electro-hydraulic-servo-compression-tester","provider":"Qualitest USA LC","version":"1.0","type":"link"}