德纳440双桥
We mainly deals in Dongfeng truck accessories (engine/axle/gearbox/cabin), especially Dana axle accessories and Cummins engine parts (4BT, 6BT, 6CT, 6L, ISBE, ISDE, ISLE,ISF2.8, ISF3.8, NTA855, KTA19,KTA38, KTA50, M11, ISM, etc.) with great advantages.
Product Descreiption
The Dana 440 Axle is a heavy-duty, high-performance rear-drive axle engineered for severe-duty commercial and industrial applications, renowned for its exceptional strength, durability, and adaptability. Designed to handle extreme loads and harsh operating conditions, the Dana 440 combines advanced materials, precision engineering, and modular flexibility to deliver unmatched reliability in construction, mining, military, and off-highway vehicles. Below is a detailed overview of its specifications, features, and applications.
Key Specifications
- Rated Load Capacity:
- Gross Axle Weight Rating (GAWR): Up to 13,600 kg (30,000 lbs), making it suitable for heavy-duty trucks, buses, and specialty vehicles.
- Gear Ratio Options:
- Standard ratios: 3.91:1, 4.10:1, 4.56:1, 5.13:1, and 6.17:1 (customizable for specific torque and speed requirements).
- Axle Type:
- Full-floating design with a robust differential housing for maximum load support.
- Wheel End Configuration:
- Hub type: Integral hub with oil-lubricated tapered roller bearings or high-capacity sealed units.
- Brake compatibility: Supports large-diameter drum brakes (up to 457 mm/18 inches) or heavy-duty disc brakes (vented rotors with multi-piston calipers).
- Material & Construction:
- Axle housing: High-strength forged alloy steel or nodular iron with reinforced ribbing for torsional rigidity.
- Gear components: Case-carburized and ground spiral bevel gears for quiet, efficient power transmission.
- Dimensions:
- Overall width: 1,800–2,200 mm (adjustable based on track width and vehicle frame).
- Axle tube diameter: 130–150 mm (wall thickness: 12–15 mm).
- Weight: Approximately 300–350 kg (configuration-dependent).
Technical Features
- Extreme Durability:
- Corrosion-resistant coatings (e-coat, zinc-nickel plating, or epoxy finishes) for long-term reliability in harsh environments.
- Heat-treated gears and axle shafts resist wear and fatigue under high-stress conditions.
- High Torque Capacity:
- Optimized gear tooth design and high-contact ratios ensure smooth power delivery even at peak loads.
- Heavy-duty differential options (open, limited-slip, lockable, or electronic traction control).
- NVH Optimization:
- Precision-machined gears and vibration-damping mounts minimize noise and harshness.
- Optional helical gear sets for ultra-quiet operation in passenger-carrying applications.
- Modularity & Integration:
- Compatible with ABS, ESC, and advanced driver-assistance systems (ADAS).
- Supports hybrid and electric powertrain retrofits with custom flange and mounting options.
- Plug-and-play wheel end and brake designs for simplified maintenance.
- Serviceability:
- Easy access to differential service ports and replaceable wear components.
- Extended service intervals (up to 200,000 km for lubricant changes with synthetic gear oil).
