Jiubin BJ-124 Computer-Controlled Spring Tensile and Compression Testing Machine
| Brand | Jiubin Instruments |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China) |
| Model | BJ-124 |
| Price | USD 4,050 (FOB Shanghai) |
Overview
The Jiubin BJ-124 Computer-Controlled Spring Tensile and Compression Testing Machine is a precision electromechanical testing system engineered for the quantitative mechanical characterization of helical compression, extension, and torsion springs. It operates on the principle of controlled displacement-driven force measurement, utilizing a high-resolution load cell and servo-controlled vertical actuator to apply calibrated axial loads while recording real-time force–displacement curves. Designed in accordance with fundamental mechanics standards—including ISO 10243 (springs—testing methods), ASTM E4 (load verification of testing machines), and GB/T 25712–2010 (Chinese national standard for spring testing)—the BJ-124 delivers repeatable, traceable, and audit-ready data essential for R&D validation, incoming quality inspection, and production line process control. Its rigid frame architecture, low-noise ball-screw drive, and integrated thermal compensation ensure minimal mechanical hysteresis and long-term stability across ambient laboratory conditions (20 ± 5 °C, RH ≤ 80 %).
Key Features
- Computer-controlled closed-loop operation via dedicated Windows-based software with USB 2.0 interface and real-time data streaming at up to 100 Hz sampling rate
- Adjustable test space (max. 600 mm vertical travel) accommodating springs from 10 mm to 450 mm free length
- Load capacity range: 0–500 N (standard configuration); optional upgrade to 2 kN available upon request
- Force resolution: 0.01 N; displacement resolution: 0.001 mm; repeatability: ±0.5% of full scale (per ISO 7500-1 Class 1)
- Pre-programmed test modes: compression, tension, relaxation, creep, and step-load cycling
- Automatic yield point detection, spring rate (k-value) calculation, and residual deformation analysis per EN 13909-2
- Modular fixture system supporting hook-type, flat-end, and ground-end spring configurations with quick-change adapters
Sample Compatibility & Compliance
The BJ-124 accommodates cylindrical, conical, and barrel-shaped metallic coil springs fabricated from stainless steel, music wire, phosphor bronze, or nickel-titanium alloys. It supports both static and quasi-static loading protocols compliant with ISO 26909 (metallic springs—terminology and definitions), DIN 2095 (spring testing terminology), and GB/T 1239.2 (cold-coiled helical compression springs). All firmware and calibration routines adhere to GLP and GMP documentation requirements, including electronic signature support, user-level access control (admin/operator/guest), and audit trail logging per FDA 21 CFR Part 11 guidelines. Calibration certificates are issued traceable to CNAS-accredited reference standards (equivalent to ISO/IEC 17025).
Software & Data Management
The proprietary BJ-TestSuite v3.2 software provides intuitive test method creation, multi-curve overlay comparison, statistical batch reporting (mean, SD, Cp/Cpk), and export to CSV, PDF, or XML formats. Raw data files include embedded metadata: operator ID, timestamp, environmental conditions (optional external sensor input), and instrument serial number. The software supports automated report generation aligned with internal QA templates and third-party LIMS integration via ODBC. All data modifications are logged with immutable timestamps and user attribution—enabling full forensic traceability during regulatory audits.
Applications
This system serves critical roles across academia and industry: validating spring performance in automotive suspension modules (e.g., BYD, Geely, FAW-Volkswagen), verifying fatigue life parameters for medical device actuators (Kangmei Pharma, Zhejiang Shunhe Medical), certifying compliance of industrial fasteners (SanYuan Tire, Zhejiang San-A Spring), and supporting materials research on shape-memory alloy behavior (Beijing Graphene Institute, CAS Guangzhou Branch). Universities—including Tsinghua University, Shanghai Jiao Tong University, and Nanjing University—utilize the BJ-124 for undergraduate mechanics labs and graduate-level constitutive modeling studies.
FAQ
Is the BJ-124 compatible with ASTM A228 or ISO 10243 test protocols?
Yes—the system implements all required displacement ramp rates, dwell times, and data acquisition intervals specified in both standards.
Can test methods be exported and shared between multiple BJ-124 units?
Yes—method files (.bjm) are portable and retain all parameter settings, pass/fail criteria, and reporting templates.
Does the system support third-party calibration services?
Yes—calibration is performed using NIST-traceable deadweight standards; certified calibration reports are provided upon request.
What is the warranty coverage and service response time?
Jiubin Instruments offers a 24-month parts-and-labor warranty; on-site technical support is available within 5 business days in Tier-1 Chinese cities.
Is remote diagnostics supported?
Yes—secure remote access (with customer authorization) enables firmware updates, troubleshooting, and real-time parameter adjustment via encrypted TLS tunnel.
