Sinotruk Howo 8X4 Vs 6X4: Which Configuration Suits Your Needs Best

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Sinotruk Howo 8X4 Vs 6X4: Which Configuration Suits Your Needs

The Sinotruk Howo Dump Trucks are built for tough jobs in the industry. Whether you’re working in a mine, laying the foundation for a skyscraper, or hauling sand, stone, or gravel, these trucks can handle it. With 8X4 and 6X4 configurations, they are designed to meet the demands of the job. You’ll never struggle when the work gets tough.

6X4 Configuration

The 6X4 model is powerful and reliable. Here are its key specs:

  • Drive Type: 6×4
  • Engine Power: 336-420 hp
  • Emission Standards: EURO2-5
  • Dimensions: 8400 × 2496 × 3400 mm
  • Wheel Base: 4300+1350 or 3600+1350 mm
  • Curb Weight: 12,080-12,280 kg
  • Max Load Capacity: 25,000 kg
  • Transmission: HW19710 (10 forward & 2 reverse gears)
  • Axles: HF9 (front), HC16 (rear)
  • Tires: 12.00R20 radial tires
  • Fuel Tank Capacity: 300L or 400L
  • Cab: HOWO70 or HW76 with air conditioning and an adjustable steering wheel

8X4 Configuration

The 8X4 model offers better load capacity and stability. Here are the specs:

  • Drive Type: 8×4
  • Engine Power: 336-420 hp
  • Emission Standards: EURO2-5
  • Dimensions: 10,245 × 2496 × 3400 mm
  • Wheel Base: 1800+3500+1350 mm
  • Curb Weight: 14,860 kg
  • Max Load Capacity: 30,000 kg
  • Transmission: HW19710 (10 forward & 2 reverse gears)
  • Axles: HF9 (front), HC16 (rear)
  • Tires: 12.00R20 radial tires
  • Fuel Tank Capacity: 400L
  • Cab: HW76 Extended cabin with a single sleeper and adjustable steering wheel

Key Differences Between 6X4 and 8X4 Models

  • Payload Capacity: The 8X4 can carry up to 30,000 kg, while the 6X4 is limited to 25,000 kg.
  • Wheel Base and Dimensions: The 8X4 has a longer wheel base and bigger dimensions compared to the 6X4, making it more stable and able to carry heavier loads.
  • Number of Tires: The 6X4 has 10 wheels, while the 8X4 has 12 wheels, which helps distribute the weight more evenly.

Both models share strong engines, durable axles, and good fuel efficiency, making them ideal for tough, heavy-duty tasks.

Engine Specifications

When choosing between the Sinotruk Howo 8X4 and 6X4, the engine specs are the most important factor. These engines are the core of the truck and determine how well it performs on the road. Both models have powerful engines, but there are some key differences that could matter based on your needs.

Engine Model and Output

  • 8X4 Configuration: The 8X4 Howo truck uses the WD615.47 engine, which offers 371 HP and meets the Euro II emission standard. It provides a maximum torque of 1500 Nm at 1100-1600 rpm, giving it strong pulling power for heavy-duty tasks.
  • 6X4 Configuration: The 6X4 version is powered by the WD615.96C engine, which delivers 380 HP and meets the Euro III emission standard. It offers a maximum torque of 1590 Nm at 1200-1500 rpm, ensuring strong performance, especially in challenging conditions.

Engine Displacement and Type

Both engines have a similar displacement of 9.726 L and are 6-cylinder in-line designs. They are water-cooled, four-stroke, direct injection diesel engines, turbocharged and intercooled for optimal performance.

Fuel Efficiency and Consumption

Both the WD615.47 and WD615.96C engines have a specific fuel consumption of 195 g/kWh, which strikes a balance between performance and fuel efficiency. This ensures that both the 8X4 and 6X4 models are good for long trips while keeping fuel consumption reasonable.

Engine Maintenance

  • Engine Oil: Both engines use 23 L of oil, which ensures reliable lubrication for long-distance drives.
  • Cooling System: The cooling system holds 40 L of coolant, helping keep the engine temperature in check during extended operations.
  • Thermostat Temperature: The 8X4 has a thermostat opening temperature of 80°C, while the 6X4 option is 71°C, offering flexibility based on the environment.

Air Compressor

Both trucks come with a twin-cylinder air compressor, ensuring steady air pressure for the braking system and other pneumatic functions.

By understanding these engine specs, you can decide which engine configuration suits your needs in terms of power, fuel efficiency, and maintenance.

Transmission and Gearbox

The transmission system in the Sinotruk Howo 8X4 and 6X4 configurations plays a key role in their performance and ability to handle different tasks. Let’s take a closer look at the transmission and gearbox specifications for both models:

Transmission Model

  • Howo 8X4: The Howo 8X4 is equipped with the HW19710 transmission system. It has 10 forward gears and 2 reverse gears, offering a variety of speed options for different driving conditions[1][2][3].
  • Howo 6X4: The Howo 6X4 typically uses either the HW9 or Fuller 9 transmission, which offers 9 forward gears and 1 reverse gear. Alternatively, it can be fitted with the HW13710CL, a system with 10 forward gears and 1 reverse gear[2][5].

Gear Ratios

  • Howo 8X4: The gear ratios for the HW19710 transmission are as follows:
    • Forward ratios: 14.28, 10.62, 7.87, 5.88, 4.38, 3.27, 2.43, 1.80, 1.34, 1.00
    • Reverse ratios: 13.91 (R1), 3.18 (R2)[1]
  • Howo 6X4: The gear ratios for the HW13710CL are not detailed, but it typically has 10 forward gears. The Fuller 9 transmission offers 9 forward gears, but no specific gear ratios are available[5].

Clutch

  • Howo 8X4: The clutch in the Howo 8X4 is a single-plate dry diaphragm spring clutch with a diameter of 430mm. It works hydraulically with air assistance, ensuring smooth operation and reliability[1][3].
  • Howo 6X4: The HW9 or Fuller 9 transmission in the 6X4 also uses a reinforced diaphragm clutch with a 430mm diameter. The HW13710CL uses a similar single-plate dry coil-spring clutch, with hydraulic operation and air assistance[2][5].

Gearbox Structure

Both models use a twin countershaft structure for the main transmission. This setup provides strong bearing capacity and a reliable structure. The auxiliary transmission often features planetary deceleration, which adds to the durability and performance of the gearbox[4].

Lubrication and Control

  • Lubrication: Both configurations use a mix of forced lubrication and gear splash lubrication. This ensures adequate oil distribution, making the system suitable for different road conditions[4].
  • Control Modes: The Howo trucks offer several control options, including single lever, double lever, or direct control, giving drivers flexibility[4].

Power Take-Off

The primary transmission in both models allows power take-off when the truck is in neutral, offering versatility for using auxiliary equipment while the truck is stationary[4].

Axle and Suspension

When choosing between the Sinotruk Howo 8X4 and 6X4 configurations, the axle and suspension systems are key factors affecting performance, load capacity, and the driving experience.

Front Axle

  • 8X4 Configuration: The front axle uses the HF9 system, with a 9000 KGS loading capacity, and a T-cross section beam for steering. This setup provides strong handling and stability.https://www.youtube.com/watch?v=sWt2yABuTzs
  • 6X4 Configuration: The front axle in the 6X4 is similar, also using a T-cross section beam but with a 7000 KGS loading capacity. It offers good stability but has a slightly lower capacity compared to the 8X4.

Rear Axle

  • 8X4 Configuration: The rear axle in the 8X4 uses the HC16 system, with two 16000 KGS axles. It includes a central single reduction with planetary wheel reduction and a differential lock, providing a total rear axle load capacity of 32000 KGS.
  • 6X4 Configuration: The 6X4 rear axle also features a central single reduction with planetary wheel reduction and a differential lock. However, it has a lower total load capacity of 18000 KGS for the double axle.

Suspension

  • Front Suspension:
    • 8X4: The front suspension in the 8X4 includes 9 semi-elliptic leaf springs, hydraulic telescopic double-action shock absorbers, and a stabilizer. This system provides a smooth ride and better handling under heavy loads.
    • 6X4: The front suspension in the 6X4 uses semi-elliptic leaf springs, hydraulic telescopic shock absorbers, and a stabilizer. While simpler than the 8X4, it still offers solid performance for most uses.
  • Rear Suspension:
    • 8X4: The rear suspension in the 8X4 includes 15 semi-elliptic leaf springs, a width of 90mm, bogie springs, and a stabilizer, ensuring maximum stability and load-bearing capacity.
    • 6X4: The rear suspension for the 6X4 uses semi-elliptic leaf springs and bogie springs. It may not have the same level of detailed specifications as the 8X4 but still provides reliable performance with a stabilizer.

Summary of Differences

  • The 8X4 configuration has a higher rear axle load capacity (32000 KGS) compared to the 6X4 (18000 KGS).
  • The 8X4 features more complex suspension components, including additional springs and stabilizers, offering better overall stability and comfort under heavy loads.
  • The 6X4 configuration has a slightly lower axle and suspension capacity, making it a good option for lighter, less demanding tasks.

Steering and Brakes

When deciding between the Sinotruk Howo 8X4 and 6X4 models, the steering and braking systems are crucial for the vehicle’s performance and safety.

Steering System

Both models feature high-quality steering systems that are reliable and easy to control. They come with the ZF power steering system, available in either the ZF8118 or ZF8098 model. This hydraulic system provides power assistance, making steering smooth and responsive, even for heavy-duty use.

  • ZF8118: Hydraulic steering with power assistance for reliable and efficient handling.
  • ZF8098: Features hydraulic power steering with a steering ratio of 22.2 to 26.2, providing different levels of responsiveness for various driving conditions.

Some models may also use Germany BOSCH power steering, which also provides hydraulic power assistance and similar benefits.

Braking System

The braking system in both models is built to ensure safety and control in all conditions. Both the 8X4 and 6X4 feature a dual circuit compressed air brake, which ensures consistent braking power. In addition, the vehicles have several auxiliary braking systems.

  • Service Brake: Dual circuit compressed air brake that works effectively in most conditions.
  • Parking Brake: A spring energy parking brake with compressed air operates on the rear wheels, offering reliable emergency braking.
  • Auxiliary Brake: An engine exhaust valve brake boosts braking power, especially in mountainous terrain or when going downhill.
  • ABS: Both models are equipped with an Anti-lock Braking System (ABS), ensuring stable braking and reducing the risk of wheel lockup.

These braking features enhance the safety of the driver and the vehicle under various load and driving conditions.

Dimensions and Capacity

When deciding between the Sinotruk Howo 8X4 and 6X4 configurations, it’s important to understand their dimensions and payload capacities to choose the right vehicle for your needs.

Overall Dimensions

  • 8X4 models are larger, with typical dimensions ranging from 10300x2550x3450 mm to 11600x2550x3400 mm. Their larger size offers more space for heavier loads and better stability, making them ideal for heavy-duty tasks.
  • 6X4 models are shorter and narrower, with dimensions ranging from 10310×2500×3400 mm to 11050x2496x3450 mm. This makes them more maneuverable in tight spaces like cities or construction sites.

Cargo Body Dimensions

  • 8X4 trucks come with cargo bodies ranging from 7300x2500x3000 mm to 8600x2300x600 mm, depending on the configuration. This gives them the ability to carry larger volumes of material.
  • 6X4 models, which are meant for lighter loads, typically have smaller cargo bodies, around 5400mm to 6000mm in length. This makes them better suited for city construction and lighter tasks.

Cargo Body Thickness

  • The 8X4 model has a thicker cargo body with 8 mm at the bottom and 6 mm on the sides for regular use. For more demanding tasks, like mining, the thickness can increase to 16 mm at the bottom and **12 mm on the sides and back.
  • 6X4 trucks have a thinner cargo body, suitable for lighter tasks.

Payload Capacity

  • 8X4 trucks offer a much higher payload capacity, ranging from 25,000 kg to 40,000 kg, and they can even carry up to 45 tons, depending on material density.
  • 6X4 trucks are designed for lighter tasks and typically carry 20-30 tons, making them better suited for shorter trips and less demanding hauling needs.

These dimensions and payload capacities are important in deciding which model suits your needs, whether you need a heavy-duty truck for tough jobs or a more maneuverable vehicle for lighter tasks and city driving.

Electrical and Fuel Systems

The electrical and fuel systems in the Sinotruk Howo 8X4 and 6X4 are vital for their performance. They provide dependable power and fuel efficiency for various uses.

Electrical System

  • Operating Voltage: Both the 8X4 and 6X4 use a 24 V electrical system that is negative grounded.
  • Starter: Each configuration has a 24 V, 5.4 kW starter motor. This helps in starting the engine reliably in different conditions.
  • Alternator: The alternator is a 3-phase, 28 V unit, delivering 1500 W in the 8X4 model. The 6X4 normally uses a similar alternator, but the voltage and wattage can differ slightly.
  • Batteries: The 8X4 has two 12 V, 165 Ah batteries. The 6X4 usually has the same type of batteries, but the amperage rating might change based on specific models.

Fuel System

  • Fuel Tank Capacity: The 8X4 has a fuel capacity between 300 and 400 liters, allowing for a longer operational range. The 6X4 also generally has a similar capacity, but it can sometimes be smaller than the 8X4.
  • Fuel Type: Both configurations use diesel fuel. This ensures they use energy efficiently for long-range trips.
  • Engine Specifications: The 8X4 uses the WD615.47 or WP9H350E62 engine, which provides 371 horsepower. The 6X4 is equipped with a 336 hp engine that meets Euro 2 emission standards.
  • Transmission: The 8X4 has a HW19710 transmission that allows for 10 forward and 2 reverse gears. This gives it flexibility for different driving conditions. The 6X4 typically has a manual transmission similar to the 8X4, although specific details aren’t always clear.

Knowing these details about the electrical and fuel systems can help you choose the right model based on your needs. I believe it’s important to consider the vehicle’s power, fuel efficiency, and reliability in your decision.

Tires and Wheels

When comparing the Sinotruk Howo 8X4 and 6X4, tire specifications are important for determining which configuration is best for a specific job. Both use 12.00R20 radial tires, known for their durability and ability to carry heavy loads. These tires are great for heavy-duty tasks, making them suitable for trucks used in construction or long-distance transport.

Tire Specifications for the 8X4 Configuration

  • Tire Type: 12.00R20 radial tires
  • Rims: 8.5-inch standard rims
  • Number of Tires: 12 tires, including one spare
  • Load/Speed Rating: 154/151K, designed for heavy-duty use
  • Tread Depth: 20-22 mm, providing excellent traction on different terrains
  • Max Load (kg): 4000 kg per single tire, 3650 kg per dual tire setup

Tire Specifications for the 6X4 Configuration

  • Tire Type: Typically 12.00R20 radial tires, similar to the 8X4, but can vary by model
  • Rims: 8.0-inch rims for the 12.00R20 tire size
  • Number of Tires: 10 tires, including one spare
  • Load/Speed Rating: Similar to the 8X4, typically rated 154/151K
  • Tread Depth: 20-22 mm, offering solid performance
  • Max Load (kg): 4000 kg per single tire, 3650 kg per dual tire setup, with slight variations depending on the tire model

Tire Pressure and Maintenance

Maintaining proper tire pressure is crucial for both the 8X4 and 6X4 configurations. Correct pressure ensures the tires perform at their best, saves fuel, and extends tire life. Regular tire maintenance is also important to keep the tires in good condition and avoid problems during heavy use.

Tire Customization Options

Some suppliers offer customization for both configurations. This includes adjusting load and speed ratings, as well as changing tread depth to meet specific needs. This can be helpful for businesses with unique requirements or operating conditions. “`

Fuel Consumption

Fuel consumption plays a major role when deciding between the Sinotruk Howo 8X4 and 6X4 configurations. Fuel efficiency depends on the load and the truck model.

  • Howo 371:
    • 50% empty & 50% full load: 23.8 L/100 km
    • 100% empty: 13.9 L/100 km
    • 100% full load: 34 L/100 km
  • Howo A7:
    • 50% empty & 50% full load: 25.4 L/100 km
    • 100% empty: 14.7 L/100 km
    • 100% full load: 36 L/100 km
  • Sitrak T7H:
    • 50% empty & 50% full load: 26.3 L/100 km
    • 100% empty: 15.3 L/100 km
    • 100% full load: 37 L/100 km

Specific Fuel Consumption

  • The Howo 6×4 tractor with a 420hp engine has a specific fuel consumption of 188g/kWh, which shows the engine’s fuel efficiency.

8X4 vs. 6X4 Fuel Efficiency

  • The 8X4 configuration typically consumes more fuel than the 6X4, especially when fully loaded.
  • The 6X4 configuration is usually more fuel-efficient, particularly at lower loads or when empty.

Additional Features and Customization

When deciding between the Sinotruk Howo 8X4 and 6X4, you should consider the extra features and customization options. Both models provide various enhancements for different operational needs and preferences.

Cabin and Comfort

The Howo 8X4 and 6X4 both come with the HW76 cabin, available in two versions: a standard cab for the 8X4 and a long cab for the 6X4. The standard cab has a single bed, air conditioning, an adjustable steering wheel, and a quality control module. This setup ensures comfort during long trips. The long cab, however, has more room with two seats and one sleeper, making it perfect for drivers on extended journeys. Both cabins include a damped adjustable driver’s seat, a heating and ventilation system, safety belts, and a sun visor for convenience.

Customization Options

The 8X4 and 6X4 models allow for various customization options. You can choose between Left Hand Drive (LHD) or Right Hand Drive (RHD) based on regional needs. These trucks come in multiple colors, and additional customization can be tailored to your specific preferences. This flexibility helps ensure that the vehicle fits individual business requirements or aesthetic tastes.

Performance and Specifications

Both models deliver strong performance, equipped with the WD615.47 engine. This engine provides several horsepower options: 266hp, 290hp, 336hp, 371hp, and 420hp for different demands. The 8X4 Howo and 6X4 Howo use the HW19710 transmission, featuring 10 forward gears and 2 reverse gears for smooth operation. The 6X4 has a gross vehicle weight of 25,000 kg and a maximum speed of 102 km/h, while the fuel consumption is about 35 liters per 100 km. This setup balances power and efficiency.

Axles, Suspension, and Brake System

Both models include a dual circuit compressed air brake system for improved safety. They share similar front and rear axles: the HF9 front axle and the HC16 rear axle for the 8X4, with the 6X4 also using SINOTRUK’s HC16 rear axle. The suspension system is built for rough terrains, featuring front spiral springs and rear air springs, as well as shock absorbers for added stability.

Tires and Electrical System

Both models come with 12.00R20 radial tires for durability and good traction. A spare tire is included. The trucks are equipped with a 24V electrical system, grounded negatively, and feature German VDO instruments for detailed operational data, keeping drivers and fleet operators informed about vehicle performance.

Conclusion

Choosing the right configuration is essential. The customization options for both the Sinotruk Howo 8X4 and 6X4 offer great flexibility. This makes it easier for businesses to adjust their trucks to meet specific operational needs. Both models provide high-quality cabins, dependable performance specifications, and advanced safety features, making them suitable for various tasks in different industries.

Warranty and After-Sales Service

The Sinotruk Howo 8X4 and 6X4 models come with strong warranty coverage and reliable after-sales services to ensure they perform well for a long time.

Warranty Coverage

  • Road Trucks: The warranty for road trucks, including the HOWO series, lasts 1 year or 100,000 km, whichever happens first.
  • Off-Road Trucks: For off-road vehicles, like tipper trucks, the warranty lasts 6 months or 60,000 km, whichever comes first.
  • Warranty Scope: Sinotruk will repair or replace parts that are damaged due to material or manufacturing defects during the warranty period. Damages caused by overloading, forced operation, or unauthorized disassembly are not covered.

After-Sales Support

  • Global Service Network: Sinotruk has a global service network with over 450 service and parts outlets worldwide, ensuring fast and efficient after-sales support.
  • 24-Hour Hotline: Sinotruk offers a 24-hour after-sales hotline, ensuring a response time of under 15 minutes and completing the job within 24 hours.
  • Spare Parts Availability: Sinotruk has thousands of spare parts centers across five continents. They deliver parts within 72 hours, and there are nearly 5 billion spare parts available.
  • Mandatory Service: Every new vehicle receives one mandatory service between 2,000 to 4,000 kilometers or within six months of purchase.
  • Professional Support: A dedicated team of service engineers offers remote guidance and professional support after the sale.
  • Comprehensive Documentation: Sinotruk provides detailed manuals, technical data, and spare parts books to help maintain the vehicles.

The choice between the Sinotruk Howo 8X4 and 6X4 depends on your needs. The 8X4 works best for heavy-duty tasks that require high load capacity and stability. On the other hand, the 6X4 is better for more flexible, less demanding tasks. Understanding their differences in load capacity, fuel efficiency, and overall performance will help you pick the right one for your operations.

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