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Heavy Duty Truck Assembly Parts Rear Axle Assembly for Faw Rear Axle Assembly

The Rear Axle Assembly is a fully integrated driven axle system that forms the backbone of power transmission and load-bearing capability in heavy-duty commercial vehicles. It connects the driveline to the wheels, converting engine torque into tractive force while supporting a significant portion of the vehicle’s total weight.

Commonly found in Sinotruk HOWO, A7, T7H, mining dumpers, tractor units, and heavy haulers, this axle uses advanced hypoid bevel gears, planetary wheel-end reduction, and robust housing design to deliver high durability under extreme loads and harsh operating conditions.
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  • FAW

Attribute Description
Product Type Full Rear Drive Axle Assembly (Tandem or Single)
Axle Model Series HC16, HW19710, HW16 (Sinotruk standard)
Drive Configuration Double Reduction (Main + Wheel-end), Single Reduction options available
Position Rear Tandem Axle (typically installed as middle/follow axle in 6x4 layout)
Function Transmits torque from transmission → differential → half shafts → wheels; supports vehicle load
Technology Base Derived from Steyr (STR) axle design; upgraded for higher torque capacity
Material (Housing) Cast steel or ductile iron (GGG60 equivalent); forged alloy steel gears
Sealing & Protection Dual-lip oil seals, labyrinth dust protection at wheel ends
后桥总成-3


后桥总成-2


Parameter Specification
Axle Load Rating Up to 16,000 kg – 18,000 kg per axle (depending on model)
Max Input Torque ≥ 30,000 N·m (with planetary reduction)
Gear Type Hypoid Spiral Bevel Gears (Pinion & Ring Gear)
Final Drive Ratio Options I = 3.7, 4.11, 4.42, 4.8, 5.14, 5.73, 6.72 (customizable)
Wheel-End Reduction Ratio I = 2.68, 3.21, 3.93, 4.38 (common)
Overall Reduction (Total) Final × Wheel-end = up to ~25:1 gear multiplication
Brake Type Drum Brake (Ф420×200 mm) or Disc Brake (optional)
Half Shaft Type Full-floating, splined connection
Lubricant Capacity Main Housing: ~18–22 L; Each Wheel End: ~1.5–2 L
Recommended Oil GL-5 85W-90 / Synthetic Gear Oil
Weight (Approx.) 550 – 750 kg (complete unit, varies by ratio and brake type)
Mounting Interface Spring seat or air suspension bracket compatible
ABS Compatibility Optional speed sensor gear (tone ring) for ABS systems


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