4 1/2x2 Single Convoluted Type Air Rubber Bellow W01-R58-4076 Firestone Industrial Air Spring

4 1/2x2 Single Convoluted Type Air Rubber Bellow W01-R58-4076 Firestone Industrial Air Spring

Product Description

OEM Number/Part Number

FIRESTONE BELLOWS NUMBER: 4.5X2

FIRESTONE BELLOWS NUMBER: 41/2X2

FIRESTONE BELLOWS NUMBER: 4 1/2X2

FIRESTONE FIRESTONE NUMBER: W01R584076

FIRESTONE FIRESTONE NUMBER: W01 R58 4076

FIRESTONE FIRESTONE NUMBER: W01-R58-4076

DUNLOP NUMBER: SP1457

DUNLOP NUMBER: SP 1457

Technical Data of the 2B4.5X2 Air Spring

Natural outer diameter: 114mm
Nominal diameter: 110mm
Minimum height: 53mm

Why are Air Springs Made of Rubber?

1. High Elasticity and Flexibility
Reversible Deformability: Rubber's molecular chain structure gives it excellent elasticity, allowing it to expand rapidly after inflation and return to its original shape after deflation. It also resists fatigue after repeated deformation.

Adaptability to Complex Movements: Rubber can withstand multi-directional deformation (such as tension, compression, and shear), making it suitable for the up-and-down bouncing and lateral swinging of vehicle suspensions.

2. Excellent Airtightness
Molecular Density: Rubber's molecular structure effectively prevents gas permeation, ensuring long-term stability of the air pressure inside the air spring (especially under high pressure).

Technology Enhancement: Vulcanization or an inner lining (such as butyl rubber) can further enhance sealing.

3. Fatigue Resistance and Durability
Dynamic Load Adaptability: Rubber resists crack growth during frequent compression/rebound cycles (for example, natural rubber can withstand flexion cycles exceeding one million times).

Environmental Stability: Through formulation adjustments (such as the addition of antioxidants and antiozonants), it can resist UV rays, oil stains, and temperature fluctuations (-40°C to 80°C).

4. Damping Properties
Vibration and Noise Reduction: The viscoelasticity of rubber absorbs vibration energy (the damping coefficient is typically 0.05-0.25), reducing mechanical shock and minimizing vehicle jolting.

5. Lightweight Advantages
Low Density: Rubber density is approximately 1.1-1.2 g/cm³, significantly lower than metal (7.8 g/cm³ for steel), reducing suspension system weight and improving energy efficiency.

6. Design Flexibility
Easy Molding: Molding allows for complex structures such as bellows and sleeves (such as single- or multi-convoluted bellows) to accommodate various installation spaces.

Material Composites: It can be reinforced with cord layers (polyester or nylon) to withstand higher pressures (for example, commercial vehicle air springs can reach pressures of 8-10 bar).

Limitations Compared to Other Materials: Metals (such as steel): They lack elastic deformation and are heavy.

Plastics (such as polyurethane): Poor air tightness and fatigue resistance, and prone to brittleness at low temperatures.

Firestone Rubber Bellow Air Spring

The Drawing of the 41/2X2

Guangzhou Guomat Air Spring Co., Ltd. is located in Guangzhou, about 15min’s drive from Baiyun Airport. Our mainly products are air spring, rubber bellows, air suspension spring, air suspension compressor and refitted suspension system. They are widely used in bus, truck, cabin, vehicles’ seat, luxurious car and industrial machine field.

GUOMAT Factory gate：

Established in 2008, Our company covers 20,000㎡ and is located in Taihe Town Baiyun District. With the rapid development of our company, we are equipped with modernized workshop and advanced rubber air springs equipments now. We are the first company who started air spring business and has become one of the largest air spring manufacturing bases in China.

In 2017, we launched a collaboration with High Tech of US customers to customize the products of our customers and the logo of our customers. Every year, there are about 10,000 orders. In continuous cooperation, the products meet the international inspection standard ISO/TS16949:2009, and the customers are very satisfied with the products produced. This is our high recognition from American customers and also gives us Great motivation.

In 2018, we started cooperation with German GmbH, mainly industrial air springs, which are suitable for industrial equipment. We have successfully developed and produced the natural air-seal of the skin to reach the 700mm flanged air spring, the customer's annual demand is a few hundred.

With the development of business and demand for customers, our company introduced business with TomLog Corporation in 2010, our strategic cooperative partner in Taiwan. Then we developed air compressor program and air spring related business, in 2015, America Goodyear Corporation met with the transfer of shares in the North American plant, our company was granted with sale agent for air springs in China, providing more choice for our customers. Our company adopts the most advanced domestic air spring processing equipment and international production technology. Combined with unique production process, our company strictly execute international standards for production and spare no efforts to create the world-class products. We will endeavor to make air spring widely used at home and abroad, and let more and more customers to enjoy the best damping effect.