JB-WAW-300 Electro-Hydraulic Servo Universal Testing Machine

Overview

The JB-WAW-300 Electro-Hydraulic Servo Universal Testing Machine is a high-capacity, dual-column universal testing system engineered for precise mechanical property evaluation of metallic materials under static and quasi-static loading conditions. It operates on the principle of closed-loop electro-hydraulic servo control, where a digital controller modulates high-pressure hydraulic oil flow to a precision actuator via proportional servo valves, enabling accurate force and displacement regulation in tension, compression, bending, and shear modes. Designed to meet international structural testing requirements, the JB-WAW-300 delivers consistent load application up to 300 kN (67,400 lbf), with force measurement traceable to national metrological standards and compliant with ISO 7500-1 Class 1 accuracy specifications. Its rigid cast-iron frame, preloaded ball-screw crosshead drive, and integrated hydraulic power unit ensure long-term stability, minimal deflection, and high reproducibility across repeated test cycles—critical for quality control laboratories, metallurgical R&D centers, and third-party certification facilities.

Key Features

• Electro-hydraulic servo architecture with real-time PID feedback control for force, displacement, and strain rate regulation
• 300 kN maximum test capacity with dual-range load cell (full-scale ranges: 30 kN / 300 kN), offering resolution better than 1/50,000 of full scale
• High-rigidity dual-column steel frame with adjustable crosshead travel (0–800 mm) and precision-machined guide surfaces
• Digital controller supporting multiple control modes: load-controlled, displacement-controlled, and strain-controlled (when used with extensometer)
• Integrated hydraulic power unit featuring low-noise pump, pressure relief valve, cooling fan, and oil temperature monitoring
• Standard compliance with ASTM E4, ASTM E8/E8M, ISO 6892-1, GB/T 228.1, and EN 10002-1 for metallic tensile testing

Sample Compatibility & Compliance

The JB-WAW-300 accommodates standardized metallic specimens—including round bars (diameter up to 40 mm), flat strips (thickness up to 25 mm, width up to 80 mm), welded joints, and machined notched samples—using interchangeable wedge-action grips, compression platens, and three-point/four-point bending fixtures. All mechanical interfaces are designed to minimize alignment errors and parasitic moments. The system supports both manual and motorized grip adjustment, with optional pneumatic or hydraulic actuation for high-throughput environments. From a regulatory standpoint, the machine’s measurement uncertainty, calibration procedures, and verification protocols align with ISO/IEC 17025 requirements for accredited testing laboratories. Force transducers are calibrated per ISO 376, and system validation includes repeatability checks per ASTM E4 Annex A1.

Software & Data Management

The JB-WAW-300 is operated via PC-based testing software compatible with Windows 10/11, providing intuitive test method configuration, real-time curve plotting (stress–strain, load–displacement, load–time), and automated result calculation (YS, UTS, Elongation, Reduction of Area, Modulus). Raw data export is supported in CSV, Excel, and XML formats; all test records include timestamped metadata (operator ID, sample ID, environmental conditions, calibration certificate ID). Audit trail functionality meets GLP and GMP documentation expectations, with user-level access control, electronic signatures, and immutable log files. Optional integration with LIMS platforms is available via OPC UA or TCP/IP protocol. Software validation documentation—including IQ/OQ protocols—is provided upon request for regulated industries.

Applications

• Tensile testing of carbon steels, stainless steels, aluminum alloys, titanium grades, and nickel-based superalloys per ASTM E8/E8M and ISO 6892-1
• Compression testing of cast iron, sintered metals, and high-strength structural components
• Bending tests on weldments and extruded profiles according to ISO 7438 and ASTM E290
• Proof load verification and yield strength determination for fasteners and aerospace hardware
• Material qualification for ASME BPVC Section II, API RP 2A, and EN 10204 3.1/3.2 certification dossiers
• Research-grade mechanical characterization in university metallurgy labs and national institutes

FAQ

What standards does the JB-WAW-300 comply with for tensile testing?

It conforms to ASTM E4 (verification of force-measuring systems), ASTM E8/E8M (tension testing of metallic materials), ISO 6892-1 (metallic materials — tensile testing — Part 1: Method at room temperature), and GB/T 228.1 (Chinese national standard equivalent).
Is the system suitable for cyclic or fatigue testing?

No—the JB-WAW-300 is optimized for static and quasi-static loading only. For dynamic or high-cycle fatigue applications, a dedicated servo-hydraulic fatigue testing system (e.g., MTS or Instron 8800 series) is recommended.
Can the machine be integrated into an existing laboratory network?

Yes. It supports standard Ethernet connectivity, SCADA-compatible communication protocols, and optional LIMS interface modules for automated data ingestion and report generation.
What maintenance is required for long-term reliability?

Scheduled maintenance includes quarterly hydraulic oil filtration and replacement every 24 months, annual recalibration of load cells and displacement sensors, and biannual inspection of seals, hoses, and valve response characteristics per manufacturer’s service manual.