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| Dongfeng front axle shock absorber assembly information sheet | |
| Item | Details |
| Part Model | 2921FC-010-A (Rear Suspension Shock Absorber Assembly) |
| Type | Double-acting hydraulic shock absorber with coil spring |
| Material | Cylinder/piston rod: Carbon steel; Spring: 60Si2Mn; Connecting parts: Steel + rubber |
| Working Medium | Special hydraulic oil (viscosity 10-15mm²/s, -20℃~80℃) |
| Rated Working Pressure | ≤1.2MPa |
| Damping Characteristics | Bidirectional damping, compression/rebound damping ratio approx. 1:1.8, suitable for cab rear suspension conditions |
| Installation Method | Upper and lower hinge type, with rubber bushing |
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Performance Characteristics
1. Two-way damping stability: Compression and rebound damping damps vibrations in both directions, suppressing cab resonance and improving stability on high-speed/bumpy roads.
2. Load-bearing adaptability: Spring stiffness matches the rear suspension load of the cab (approximately 800-1200N), balancing support and comfort.
3. Durability: Piston rod surface hard chrome treatment, wear-resistant and corrosion-resistant; high-pressure sealing of the cylinder block, service life ≥80,000 km or 1.5 years.
4. Low-temperature adaptability: Damping force reduction ≤15% at -20℃, ensuring normal operation in winter.
