Ultimate Protection for 25kg Airborne Equipment

I. Pain Point: Why Do Cylindrical Airborne Equipment Urgently Need Professional Isolation?

In civil aviation and high-end transportation, a precision device weighing no more than 25kg, cylindrical in shape (390mm height, 390mm diameter), often operates under extreme conditions.

Improper isolation can lead to loose PCB solder joints, optical component misalignment, connector fracture, and other issues. Common rubber isolators age rapidly under temperature variations, oil, and ozone, with poor low-frequency resonance control – they simply cannot meet the stringent requirements of airborne environments.

Xi’an Hoan Microwave Co. presents the JMZ-2-6 friction damping isolator, specifically designed for 25kg cylindrical equipment with bottom mounting. Based on pure mechanical friction damping, it has successfully passed high-level environmental tests widely used internationally, making it a reliable choice for global purchasers.

II. Performance Verification: How Does JMZ-2-6 Conquer Rigorous Tests?

The design and validation of JMZ-2-6 strictly follow internationally accepted vibration and shock standards for airborne equipment. The two key test specifications (see Tables 7-2 and 7-3 below) are the true touchstones of isolator performance.

2.1 Vibration Test Specification Analysis: Efficient Attenuation under Broadband Random Vibration

According to Table 7-2 Vibration Test Specifications, the equipment must withstand the following functional test:

  Vibration spectrum: Starting from 0.010 g²/Hz at low frequencies, rising at 6dB/octave to a flat section of 0.3 g²/Hz, then decreasing and covering up to 2000Hz;

  Number of axes: 3 mutually perpendicular axes (X, Y, Z);

  Test duration: 15 minutes per axis.

  This broadband random vibration simulates real flight conditions of aircraft. Common rubber isolators harden under high temperature or oily environments and lose low-frequency isolation capability. By contrast, the JMZ-2-6 friction damping isolator employs a damping mechanism consisting of multiple friction plates and preloaded springs, converting vibration energy into heat through dry friction between contact surfaces. Its advantages include:

  Non-linear stiffness characteristics: High damping at low frequency / large amplitude suppresses resonance peaks; at high frequency / small amplitude (close to 2000Hz), it still maintains an attenuation capability of 0.3 g²/Hz;

  No aging problem: All-metal + friction plate structure, no rubber aging, no hydraulic leakage, and stable performance over its entire service life;

  Test data: Under the same spectrum, the JMZ-2-6 reduces the RMS acceleration transmitted to the 25kg cylindrical equipment by 65%, fully satisfying the 15-minute per axis requirement.

2.2 Shock Environment Requirement Analysis: Strong Buffering under Half-Sine Shock

Now refer to Table 7-3 Shock Environment Requirements:

  Peak acceleration: 60 m/s² (approx. 6g);

  Pulse shape: Half-sine wave, pulse duration 11ms;

  Number of shocks: 3 times in each of three axes and both directions (total 18 shocks).

  This is equivalent to the equipment instantly experiencing a 6g impact, similar to hitting a hard wall at 20km/h. The advantage of the friction damping isolator becomes evident: when an impact occurs, the friction plates slide relative to each other, dissipating most of the impact energy through Coulomb friction, while the springs provide a restoring force to avoid hard bottoming.

Third-party laboratory verification results for JMZ-2-6:

  Input shock: 60 m/s², 11ms half-sine wave;

  Measured peak response on equipment housing: ≤28 m/s², shock isolation efficiency >53%;

After 18 repeated shocks (three axes, both directions), no permanent deformation, friction plate wear <0.01mm, and no performance degradation.

III. Why JMZ-2-6? – Six Reasons for Matching Cylindrical Equipment

For cylindrical equipment (weight 25kg, height 390mm, diameter 390mm) with bottom-mounted isolators, load capacity, stability, and space constraints must all be considered. The friction damping design of JMZ-2-6 provides the optimal solution:

The core advantage of a friction damping isolator is that damping characteristics do not change with temperature or time. In contrast, rubber isolators harden at -40°C (damping decreases) and soften at +80°C (creep). JMZ-2-6 maintains a stable damping coefficient over the entire temperature range, providing global purchasers with predictable long-term reliability.

IV. Practical Installation: How to Achieve the Best Friction Damping Effect with Bottom Mounting?

For cylindrical equipment (height ≈ diameter), the center of gravity is located slightly above the geometric center. Recommended installation scheme:

  Use four JMZ-2-6 units symmetrically arranged at the four corners (or on a circular flange) of the equipment base plate;

  Each isolator is rigidly connected to the vehicle body via bottom bolts, and the top connects to the equipment base plate through mounting holes.

Why is bottom mounting most suitable for friction damping isolators?

  The vertical direction (Z-axis) carries the strongest vibration energy for airborne equipment. JMZ-2-6 has a vertical natural frequency of only 18Hz, well below the predominant flight excitation frequency, ensuring operation in the "isolation zone";

  The four-point bottom layout provides symmetrical restraint against pitch and roll angular vibrations, preventing the cylindrical equipment from tipping;

  The friction damping mechanism responds most sensitively to vertical shocks; bottom mounting directly transmits the shock force, maximising damping dissipation efficiency.

Tested by Xi’an Hoan’s engineering team, the 25kg cylindrical equipment using the above scheme shows a 70% reduction in response acceleration at critical locations under the GJB 150.16A vibration spectrum, and achieves Grade A shock response spectrum compliance under 60m/s² half-sine shock.

V. Why Choose Xi’an Hoan Microwave Co. for Global Sourcing?

  Core technology: Mature experience in friction damping isolator design, the JMZ series has undergone three generations of optimisation, leading the industry in damping stability;

  Full certification: Products comply with ISO 9001, CE, ROHS and military-grade environmental tests (third-party test reports available);

  Flexible customisation: Fast modification according to equipment mounting interfaces (thread specifications, installation height);

  Fast delivery: Xi’an production centre maintains over 1000 standard JMZ-2-6 units in stock, DDP to major European/US cities within 10 working days;

  Technical support: Selection manuals, installation guides, and finite element simulation reports available in Chinese/English/Russian.

VI. Act Now: Upgrade the Protection of Your 25kg Airborne Equipment

Stop letting vibration and shock compromise equipment reliability. Choose the Xi’an Hongan JMZ-2-6 friction damping isolator, and you will receive:

  Attenuation capability meeting broadband random vibration (0.010→0.3 g²/Hz, covering 2000Hz);

  Strong buffering against half-sine shock waves (60m/s², 11ms);

  A proven engineering solution for bottom mounting of cylindrical equipment (Φ390×390mm, ≤25kg).

Contact Xi’an Hoan’s technical team today for a free sizing calculation and sample testing service!

  Website: www.hoanindustry.com

  Business email: sales@hoanindustry.com

  International hotline: +86 18740357801 (WeChat/WhatsApp)

Xi’an Hoan Microwave Co., Ltd. – Protecting global precision equipment with friction damping isolation technology.