JB-T HP Spring Fatigue Testing Machine
| Brand | Jiubin Instruments |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | JB-T HP |
| Price | USD 12,500 (FOB Shanghai) |
| Max Test Load | Up to 50 kN (configurable per fixture setup) |
| Stroke Range | 0–100 mm |
| Frequency Range | 0.1–10 Hz (electro-hydraulic & servo-motor variants available) |
| Control Mode | Closed-loop PID with real-time load/displacement feedback |
| Test Modes | Constant Amplitude, Constant Load, Stepwise Loading, Block Cycle, Spectrum Loading |
Overview
The JB-T HP Spring Fatigue Testing Machine is an electromechanical fatigue testing system engineered for high-reliability cyclic loading of helical compression, tension, and torsion springs used in automotive dampers, office binding equipment, stationery assemblies, and industrial mechanical components. It operates on the principle of controlled displacement or force-driven sinusoidal or trapezoidal waveform cycling under closed-loop servo control, enabling precise replication of service-life stress conditions. Designed to ISO 2631-1 (mechanical vibration), ASTM E466 (standard practice for conducting force-controlled constant amplitude axial fatigue tests), and GB/T 2611–2021 (general requirements for testing machines), the JB-T HP supports both R-ratio (minimum/maximum load ratio) and frequency-dependent fatigue life evaluation. Its modular frame architecture accommodates interchangeable fixtures—such as parallel-plate compression platens, hook-and-eye tension adapters, and torsional yoke assemblies—to ensure mechanical boundary conditions match actual application constraints.
Key Features
- Modular load frame with rigid C-frame or four-column configuration options, supporting maximum static load capacity up to 50 kN and dynamic load rating of ±25 kN at 10 Hz.
- High-resolution digital servo controller with 10 kHz sampling rate, enabling accurate tracking of load, displacement, and cycle count with ≤0.5% full-scale linearity.
- Integrated thermal management system for extended test duration (>1 million cycles) without actuator drift or bearing overheating.
- Interchangeable spring-specific fixtures certified to DIN 2092 and ISO 10243 standards for geometric fidelity during compression/tension testing.
- Real-time data logging at user-defined intervals (1–100 ms resolution), with timestamped CSV export compatible with MATLAB, Python Pandas, and Minitab workflows.
- Emergency stop circuit compliant with IEC 60204-1, dual-channel safety relay monitoring, and overload cut-off at 110% rated capacity.
Sample Compatibility & Compliance
The JB-T HP accommodates springs with outer diameters from 5 mm to 300 mm, wire diameters ranging from 0.3 mm to 12 mm, and free lengths up to 500 mm. It supports standardized test protocols including ISO 10243 (helical compression springs), ISO 10244 (tension springs), and JIS B 2704 (fatigue life determination). All firmware and calibration procedures are traceable to CNAS-accredited laboratories (Certificate No. CNAS L5892), and raw test data meet GLP audit requirements per OECD Principles of Good Laboratory Practice. The system is routinely deployed in laboratories accredited to ISO/IEC 17025:2017 for mechanical testing services.
Software & Data Management
The proprietary FatigueTest Pro v3.2 software provides intuitive test sequence programming, live waveform visualization (load vs. displacement, hysteresis loops), and automated failure detection based on stiffness degradation (>5% secant modulus drop) or cycle count thresholding. Audit trails record operator ID, parameter changes, calibration events, and system errors in accordance with FDA 21 CFR Part 11 requirements. Export formats include .csv, .xlsx, and .tdms (NI DIAdem compatible). Remote diagnostics via secure SSH tunnel and optional integration with LIMS platforms (e.g., LabWare, STARLIMS) are supported through RESTful API endpoints.
Applications
- Automotive: Shock absorber coil spring endurance validation per OEM specifications (e.g., VW TL 52203, GMW14872).
- Office Equipment: Stapler spring functional life assessment under repetitive actuation (≥200,000 cycles at 2–5 N preload).
- Medical Devices: Retraction spring fatigue in orthodontic tools and surgical staplers (ISO 14971 risk analysis integration).
- Industrial Hardware: Compression springs in valve actuators, locking mechanisms, and precision instrumentation.
- Academic Research: Viscoelastic damping characterization of composite-wire springs under variable temperature/humidity environments (optional environmental chamber interface).
FAQ
What is the typical calibration interval for the JB-T HP system?
Annual calibration is recommended; however, users performing GMP-regulated testing must follow internal SOPs aligned with ISO/IEC 17025 clause 6.6, typically requiring quarterly verification using NIST-traceable deadweight standards.
Can the JB-T HP perform variable-amplitude fatigue testing?
Yes—via custom waveform import (CSV-based time-history files) or programmable step-cycle sequencing with up to 99 load-level transitions per block.
Is third-party certification available for test reports issued on this machine?
Certified test reports with CNAS or ILAC-MRA endorsement can be generated when operated within a certified laboratory scope; instrument qualification (IQ/OQ/PQ) documentation packages are provided upon request.
Does the system support high-temperature spring testing?
Not natively—but it integrates with external environmental chambers (−70°C to +300°C) via analog I/O and RS-485 handshake protocol for synchronized thermal-fatigue profiling.
How is data integrity ensured during long-duration tests (e.g., >10⁶ cycles)?
Non-volatile memory buffers retain last 10,000 cycles of raw data during power interruption; auto-resume functionality restores test position and parameters without cycle loss.
