Other Brands OK-ES Series High-Load Electromagnetic Vibration Shaker

Overview

The OK-ES Series High-Load Electromagnetic Vibration Shaker is an industrial-grade shock and vibration testing system engineered for precision mechanical shock simulation and controlled sinusoidal/random vibration profiling. Unlike conventional electrodynamic shakers limited by thermal constraints or hydraulic systems requiring complex infrastructure, the OK-ES platform employs a hybrid electromagnetic actuation architecture augmented by dual-pneumatic lift cylinders and a rigid monolithic aluminum frame. This design enables stable operation at high acceleration levels while maintaining structural integrity and waveform fidelity—critical for validating mechanical robustness of heavy-duty components such as power electronics enclosures, aerospace avionics racks, railway control units, and defense-grade battery modules. The system operates on the principle of Lorentz-force-driven armature motion, where current through voice-coil windings interacts with a permanent magnetic field to generate controllable inertial force. Its elevated natural frequency (>1.2 kHz) minimizes high-frequency spurious harmonics during transient shock events, ensuring compliance with the spectral purity requirements defined in GB/T 2423.5 (equivalent to IEC 60068-2-27) and GJB 150.18–1986.

Key Features

• Monolithic cast aluminum platform with oversized chrome-plated linear guide rails—provides exceptional rigidity, dimensional stability, and service life exceeding 15 years under continuous industrial use.
• Integrated high-mass damping base reduces high-frequency resonance transmission into the foundation, yielding smoother shock waveforms and improved repeatability (±0.8% peak acceleration deviation over 100 consecutive impacts).
• Dual pneumatic lifting cylinders deliver rapid, repeatable vertical positioning with programmable stroke control; capable of safely supporting payloads up to twice the nominal rating under low-overload test profiles.
• Non-contact photoelectric height measurement ensures precise, drift-free impact elevation control—eliminating mechanical wear and enabling sub-millimeter reproducibility across extended test campaigns.
• Fully sealed electronic controller with intuitive interface supports both manual and automated operation modes; compatible with external PLCs and SCADA systems via standard RS-485 and Ethernet/IP protocols.
• Oil-free, zero-emission pneumatic assist system meets ISO 8573-1 Class 0 air quality requirements—suitable for cleanrooms, medical device labs, and food-grade production environments.
• Quiet operational profile: acoustic pressure <62 dB(A) at 1 m under no-load conditions—significantly below OSHA-recommended exposure limits for sustained laboratory environments.

Sample Compatibility & Compliance

The OK-ES series accommodates test specimens ranging from small PCB assemblies to full-scale industrial cabinets (up to 1000 mm × 1000 mm × 1000 mm internal volume). Mounting interfaces conform to ISO 5344 and ASTM D999 standards, supporting standard fixture plates, custom adapters, and seismic isolation mounts. All models are pre-validated against GB/T 2423.5 (Shock), GB/T 2423.10 (Vibration, sinusoidal), and GJB 150.18–1986. Optional calibration certificates traceable to NIM (National Institute of Metrology, China) and third-party verification per ISO/IEC 17025 are available upon request. The system architecture supports GLP-compliant audit trails when integrated with validated data acquisition software.

Software & Data Management

The shaker integrates natively with industry-standard test control platforms—including Vibration Research’s VibrationVIEW and m+p International’s Quattro—enabling real-time spectrum analysis, SRS synthesis, and closed-loop control of shock pulse shape (half-sine, trapezoidal, sawtooth). Raw acceleration time-history data is exported in ASAM MDF 4.1 or HDF5 format for post-processing in MATLAB, Python (SciPy), or NI DIAdem. Built-in USB 3.0 and Gigabit Ethernet ports support direct connection to user-supplied PCs without proprietary hardware lock-in. Firmware updates and configuration backups are managed via encrypted web-based GUI accessible from any modern browser—no vendor-specific software installation required.

Applications

• Qualification testing of EV battery packs per UN ECE R100 and GB/T 31467.3 shock requirements.
• Structural durability validation of wind turbine pitch controllers subjected to blade-passing frequency excitations.
• Shock survivability assessment of military communication terminals under MIL-STD-810H Method 516.7.
• In-process vibration screening of assembled circuit breakers and switchgear prior to final packaging.
• Research-grade modal analysis of large composite panels using swept-sine excitation up to 3 kHz.
• Environmental stress screening (ESS) of avionics line-replaceable units (LRUs) in accordance with DO-160 Section 8.

FAQ

What is the maximum payload capacity for the OK-ES-1000 model?

The OK-ES-1000 supports up to 500 kg under standard shock test conditions; with reduced peak acceleration targets (<50 g), it can accommodate loads up to 1000 kg using the dual-cylinder lift assist mode.
Does the system meet FDA 21 CFR Part 11 requirements for electronic records?

When paired with validated third-party test software (e.g., VibrationVIEW v11+ with Part 11 add-on), full audit trail, electronic signature, and role-based access control are supported.
Can the shaker be used for random vibration testing?

Yes—the electromagnetic actuator and controller support broadband random profiles per ISO 10816 and IEC 60068-2-64, with PSD capability up to 10,000 g²/Hz and bandwidth spanning 5 Hz to 3 kHz.
Is on-site calibration and training included with purchase?

Standard delivery includes factory calibration certificate and remote operator training; on-site commissioning and ISO/IEC 17025 traceable recalibration are available as optional services.
How is mechanical alignment maintained over long-term operation?

The monolithic aluminum base and hardened chrome guide rails eliminate cumulative misalignment; periodic verification of parallelism (≤5 µm/m) is recommended annually using laser interferometry.