2B9-255 Goodyear Suspension Rubber Bellows W01-358-6947 Firestone Air Spring
Product Description
| Part Number | 2B 6947 |
| OEM Number | Goodyear 2B9-255 |
| Working temperature | -40°C bis +70°C |
| Failure testing | ≥3 millions |
| Top Cover Plate Diameter | 6.4'' |
| Bottom Cover Plate Diameter | 6.4'' |
| Gas Hole / Air inlet | 1/4NPTF |
| The Working Stroke | MAX 12.2'' to MIN 3.8'' |
| Screw Center Distance of Top Cover Plate | 3.5'' |
| Screw Center Distance of Bottom Cover Plate | 3.5'' |
| Screw and Air inlet Distance of Top Cover Plate | 1.75'' |
OE Manufacturer Number
GOODYEAR 2B9-255
GOODYEAR 2B 9-255
GOODYEAR 2B9 255
GOODYEAR 2B9255
GOODYEAR 578-92-3-206
GOODYEAR 578 92 3 206
GOODYEAR 578923206
AUTOMANN ABSP2B12RA-6947
CONTITECH 64551
CONTITECH FD200-25 428
CONTITECH FD 200-25 428
CONTITECH FD 200-25428
DAYTON 354-6947
FIRESTONE 6947
FIRESTONE WO1-358-6947
FIRESTONE WO1 358 6947
FIRESTONE WO13586947
FIRESTONE W01-358-6947
FIRESTONE W01 358 6947
FIRESTONE W013586947
HENDRICKSON B-8701
LOAD GUARD SC2127
RIDEWELL 1003586947C
TRIANGE 4425
TRP AS69470
Functions of Suspension Air Springs
Suspension air springs are the core elastic components of air suspension systems. They replace traditional steel coil springs and utilize the reaction force of compressed air within a rubber airbag to support the vehicle's weight and absorb road impacts. Their most basic functions are to provide cushioning, vibration reduction, and load-bearing, ensuring that vibrations between the wheels and the vehicle body are effectively absorbed when driving on various road surfaces, thereby providing a smooth and comfortable ride for the driver and passengers.
The most important function of air springs is their adjustable stiffness (softness or firmness) and vehicle height. Unlike steel springs, which have a fixed stiffness, air springs have a nonlinearly variable stiffness. The stiffness of the suspension can be adjusted by dynamically adjusting the air volume within the airbag. During aggressive driving or high-speed driving, the system can increase air pressure to stiffen the suspension for better handling stability and roll support. For everyday driving where comfort is paramount, the suspension can be softened to maximize bump absorption. This adjustable capability also allows the vehicle to raise or lower ground clearance in real time based on varying road conditions and driving needs, for example, lowering it at high speeds to reduce wind resistance, or raising it to enhance maneuverability on unpaved roads.
Furthermore, air springs offer excellent load retention. Whether the vehicle is unladen or fully loaded, the air suspension system automatically maintains the vehicle's height at a preset level through inflation and deflation. This is particularly important for heavy-duty trucks, buses, and frequently loaded passenger cars. This function not only maintains the vehicle's apparent levelness but also helps protect vehicle components and delicate cargo, minimizing the degradation of handling and braking performance caused by load fluctuations, thereby extending the life of the vehicle and tires and reducing maintenance costs.
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