Fuel Cell EH Series Rubber Shock Absorber 5-300kW Load Range 20-450kg High Fatigue Life

Fuel Cell Dedicated EH Series Rubber Shock Absorber Adapting to 5-300kW Systems Wide Load Range 20-450kg Integrated Bonded Structure High Fatigue Life

Quick Detail:

• Rubber shock absorber developed specifically for fuel cell systems, installed at the fixed connection point between the system and the vehicle
• Core function: alleviates the impact force and vibration suffered by the fuel cell system while the vehicle is running, protecting the stack and internal precision components
• Applicable power range: 5~300kW (covering commercial vehicles, forklifts, construction machinery and stationary power stations)
• 5 standard models: EH30 / EH40 / EH50 / EH70 / EH90
• Load range (45 Shore A): 20kg ~ 260kg; load range (60 Shore A): 50kg ~ 450kg
• Natural frequency: 8~18Hz
• Axial and radial stiffness ratio: 1:1
• Integrated bonded structure: the elastomer is bonded onto the inner steel pipe component, with simple installation, improving fatigue life compared with a non-bonded design
• Elastomer material: natural rubber NR (EPDM, NBR optional)
• Metal part material: galvanized metal (stainless steel optional)
• Designed for severe dynamic applications in both the static load direction and the rebound direction
• Good omni-directional dynamic damping effect, reducing structural noise transmission
• Complies with the IATF16949 quality management system

Description:

The fuel cell system is the core power device of a vehicle, and its installation method has an important influence on system reliability and service life. While the vehicle is running, the impact from the road surface and the vibration generated by the engine/air compressor and other components are transmitted to the fuel cell system through the installation points, which may cause problems such as loosening of the internal components of the stack, seal failure and membrane electrode damage, seriously affecting system life and safety.

The shock absorber is installed between the fuel cell system and the vehicle connection fixing point; through the damping characteristics of the rubber elastomer it absorbs and attenuates vibration energy, effectively isolating the impact and vibration from the road surface, and protecting the stack and internal precision components.

The EH series shock absorber is a rubber damping product designed specifically for equipment subjected to severe dynamic impact. The product uses an integrated bonded structure - the elastomer is directly bonded onto the inner steel pipe component, making installation simple and convenient and significantly improving fatigue life compared with a non-bonded design. With this structural design, during compression the rubber can limit the travel in both directions, thereby providing compression resistance.

The EH series shock absorber has the following outstanding features:

Wide load range: the EH series provides 5 specifications; at 45 Shore A the maximum load is 20~260kg, and at 60 Shore A the maximum load is 50~450kg, covering a wide range of load requirements from light to heavy duty.

Excellent dynamic performance: the axial and radial stiffness ratio is 1:1 and the natural frequency range is 8~18Hz, able to effectively isolate the main interfering vibration. The omni-directional dynamic damping effect is good, reducing structural noise transmission, with a fool-proof installation design.

High fatigue life: the advanced injection production process brings the bonding strength between the metal part and the rubber to 40KG/CM2, at the domestic leading level. The integrated bonded structure greatly improves fatigue life compared with a non-bonded design.

Selectable materials: the standard elastomer is natural rubber NR, with excellent elasticity, high tensile strength, and excellent tear resistance and wear resistance. EPDM (weather resistant, ozone resistant) or NBR (oil resistant, fuel resistant) materials can be customized according to application needs. The metal part is standard galvanized metal, with stainless steel optional.

Wide application: the EH series shock absorber is designed for vibration isolation of heavy and light equipment, and is widely used in the fields of agricultural machinery, construction engineering equipment, engines, exhaust systems, highway vehicles, pumps, compressors, cabs, fuel tanks, military and agricultural vehicles and industrial machinery.

Specifications:

Electrical / Optical Characteristics (Ta=25C +/-3C). See product specification image.

Natural frequency and appropriate compression amount of the shock absorber: see product specification image.

Applications:

This product is widely used in the installation and fixing of various proton exchange membrane fuel cell (PEMFC) systems, specifically including:

• Hydrogen fuel commercial vehicles (heavy trucks, city buses, logistics vehicles) - system installation point damping
• Hydrogen fuel passenger vehicles (sedans, SUVs) - system installation point damping
• Fuel cell forklifts and construction machinery - system installation point damping
• Stationary fuel cell power stations (backup power, distributed energy systems) - equipment installation damping
• Hydrogen fuel cell ships - equipment installation damping

Typical application position: installed at the connection fixing point between the fuel cell system frame and the vehicle chassis/frame; usually 4~6 shock absorbers are used per system (determined according to system weight and the number of installation points).

Company Advantages:

Shanghai Yibaijia Hydrogen Energy Technology Co., Ltd., as a professional hydrogen energy parts supply platform, distributes the EH series rubber shock absorbers dedicated to fuel cells. The EH series shock absorber uses an integrated bonded structure - the elastomer is bonded onto the inner steel pipe component, improving fatigue life compared with a non-bonded design; it provides 5 specifications, with a load range of 20~450kg, a natural frequency of 8~18Hz, and an axial/radial stiffness ratio of 1:1, adapting to 5~300kW fuel cell systems. The Shanghai Yibaijia team has more than 10 years of hydrogen energy industry experience and can provide full-process technical support from product selection and system matching to installation and commissioning.

FAQ

Q1: Can you provide samples for testing?
A: Yes, we support sample orders for vehicle installation testing and performance verification, and also accept mixed-model sample orders.

Q2: What is the delivery lead time?
A: Sample orders usually take 5-7 working days; bulk orders (depending on order quantity) generally take 15-30 working days.

Q3: Is there a minimum order quantity (MOQ) limit?
A: There is no strict MOQ limit; 100-piece sample trial orders are supported, and bulk order prices are more favorable.

Q4: Why does a fuel cell system need a shock absorber?
A: As the core power device of a vehicle, the fuel cell system is subjected to impact and vibration from the road surface while the vehicle is running. These vibrations are transmitted to the fuel cell system through the installation points, which may cause problems such as loosening of the internal components of the stack, seal failure and membrane electrode damage. The shock absorber is installed between the system and the vehicle connection fixing point; through the damping characteristics of the rubber elastomer it absorbs and attenuates vibration energy, protecting the stack and internal precision components and extending system service life.

Q5: What models does the EH series shock absorber have?
A: The EH series provides 5 standard models: EH30, EH40, EH50, EH70 and EH90, corresponding to outer diameters of 30mm~90mm and a load range of 20~450kg (depending on the Shore hardness of the rubber).

Q6: What is the load range of the EH series shock absorber?
A: At 45 Shore A the maximum load is 20~260kg; at 60 Shore A the maximum load is 50~450kg. The specific load capacity depends on the Shore hardness of the rubber and the compression amount.

Q7: What is the natural frequency of the EH series shock absorber?
A: The natural frequency range is 8~18Hz, and the axial and radial stiffness ratio is 1:1, able to effectively isolate the main interfering vibration.

Q8: What fuel cell application scenarios is the EH series shock absorber suitable for?
A: It is suitable for the installation and fixing of fuel cell systems such as hydrogen fuel commercial vehicles, passenger vehicles, forklifts, construction machinery, stationary power stations and ships; usually 4~6 shock absorbers are used per system.

Q9: How to handle product failures?
A: We implement a strict quality control system, with an out-of-factory defect rate below 0.2%. During the warranty period, small batches of defective products will be replaced with new ones in the next order; batch quality problems will be negotiated for repair or replacement to ensure customer rights.