Heavy-Duty 6X4 HOWO Nx Rhd Tractor for Global Shipping

Product Description

Product Description

  

Question: What is a tractor truck?

A tractor truck (also called a semi-tractor, tractor unit, or prime mover) is a heavy-duty commercial vehicle designed to tow semi-trailers for long-haul freight transportation. Unlike a full truck with an integrated cargo body, a tractor truck has no dedicated cargo space-it only provides the power, chassis, and coupling system needed to pull detachable semi-trailers (e.g., dry van trailers, refrigerated trailers, flatbeds, tankers). It is the core component of the semi-trailer truck (tractor + trailer) combination widely used in global logistics.

Core Structural Features

1. Power & Chassis System
   • Equipped with a high-torque diesel engine (300-600 HP) optimized for heavy loads and long-distance cruising, paired with a heavy-duty manual or automated manual transmission (AMT) to handle steep grades and variable road conditions.
   • Chassis configurations are classified by axle count, with the most common types:
     • 4×2: 2 axles (2 driving wheels), lightweight and fuel-efficient, used for light to medium loads (e.g., regional deliveries).
     • 6×4: 3 axles (4 driving wheels), the most popular configuration for long-haul freight, balancing payload capacity and maneuverability.
     • 6×2: 3 axles (2 driving wheels), designed for high fuel efficiency in long-haul operations with medium loads.
     • 8×4: 4 axles (4 driving wheels), heavy-duty for ultra-high payloads (e.g., mining, construction material transport).
   • Reinforced frame rails and heavy-duty suspension systems (air suspension or leaf spring suspension) to support the trailer's weight and ensure stability during transit.
2. Coupling System (Fifth Wheel)
   • The fifth wheel is the critical component connecting the tractor to the semi-trailer. It is a horseshoe-shaped steel coupling mounted on the rear of the tractor chassis.
   • The semi-trailer's kingpin locks into the fifth wheel, allowing the trailer to pivot (turn) independently of the tractor-this is essential for maneuvering large trailer combinations in tight spaces.
   • Modern fifth wheels have automatic locking mechanisms and safety latches to prevent the trailer from detaching during transit.
3. Cab & Operator Features
   • Cab Types:
     • Day cab: No sleeper berth, designed for short-haul or regional trips where drivers do not need to rest overnight.
     • Sleeper cab: Equipped with a small berth, storage compartments, and sometimes a mini kitchen/bathroom-used for long-haul cross-country trips, complying with driver rest regulations.
   • Advanced Logistics Systems: Telematics, GPS tracking, fuel monitoring, and trailer connection diagnostics to optimize route planning and fleet management.
   • Safety Features: Anti-lock braking systems (ABS), electronic stability control (ESC), collision warning systems, lane departure alerts, and ROPS (roll-over protective structure) for off-road tractor models.

Main Application Scenarios

• Long-Haul Freight: Towing dry van, refrigerated, or flatbed trailers to transport goods across cities, regions, or countries (e.g., consumer goods, food, industrial materials).
• Specialized Transport: Pulling specialized semi-trailers such as tankers (for liquids, chemicals, or fuel), container chassis (for intermodal shipping), or lowboy trailers (for oversized cargo like construction machinery).
• Heavy-Duty & Off-Road Use: Industrial tractor trucks with reinforced chassis and all-wheel drive (AWD) are used in mining or construction sites to tow heavy equipment trailers.

Key Difference from a Regular Truck

Tractor Truck	Regular Cargo Truck
No integrated cargo body; relies on detachable semi-trailers	Has a fixed, integrated cargo body (e.g., box van, flatbed)
Connected to trailers via a fifth wheel coupling	Cargo is loaded directly into the truck's built-in body
Designed for long-haul, high-payload transportation	Suitable for short-haul, local deliveries
Can switch between different trailer types for versatile use	Limited to the cargo type compatible with its fixed body

 

 What are the different types of tractor trucks?

 

Tractor trucks (semi-tractors/prime movers) are classified based on axle configuration, cab design, operational purpose, and power source, each tailored to specific freight scenarios. Below is a detailed breakdown of the main types:

1. Classification by Axle Configuration (Most Common)

Axle layout determines payload capacity, maneuverability, and fuel efficiency-this is the primary way to categorize tractor trucks for logistics applications.

 

Type	Axle Arrangement	Key Features	Typical Applications
4×2 Tractor Truck	2 axles total; 2 driving wheels (rear axle)	Lightweight, low fuel consumption, small turning radius; lower payload capacity	Short-haul regional deliveries, light cargo (parcels, small goods), urban logistics
6×2 Tractor Truck	3 axles total; 2 driving wheels (rear axle); 1 non-driving liftable axle	Balances fuel efficiency and payload; liftable axle reduces tire wear when unloaded	Long-haul medium-load freight (dry van, refrigerated trailers), intercity transport
6×4 Tractor Truck	3 axles total; 4 driving wheels (tandem rear axles)	High torque, strong load-bearing capacity, stable on steep slopes; industry standard	Long-haul heavy freight (containers, bulk goods), cross-country transportation, construction material haulage
8×4 Tractor Truck	4 axles total; 4 driving wheels (tandem rear axles)	Ultra-heavy-duty, reinforced chassis; handles extreme payloads	Mining equipment transport, oversized cargo (wind turbine parts, heavy machinery), off-road logistics

2. Classification by Cab Design

Cab types are optimized for driver comfort and trip duration, aligning with regulatory rest requirements for long-haul operations.

 

• Day Cab Tractor
  • No sleeper berth; compact cab design to reduce overall vehicle length.
  • Ideal for short-haul/local trips (same-day round trips, e.g., warehouse-to-retail deliveries) where drivers do not need to rest overnight.
  • Advantages: Better maneuverability in urban areas, lower fuel consumption due to lighter weight.
• Sleeper Cab Tractor
  • Equipped with a built-in sleeper berth (ranging from 24-inch narrow berths to 80-inch full-size living spaces) for driver rest.
  • Designed for long-haul cross-country trips (multi-day journeys) to comply with hours-of-service regulations.
  • High-end models include amenities like mini refrigerators, microwaves, climate control, and storage cabinets to improve driver comfort during extended shifts.

3. Classification by Operational Purpose

Tractor trucks are customized for specialized freight tasks beyond standard dry van transport.

 

• On-Highway Tractor Truck
  • Built for paved roads; features aerodynamic cabs, low-noise engines, and fuel-efficient transmissions.
  • Equipped with advanced safety systems (collision warning, lane departure alerts) and telematics for fleet management.
  • Applications: Long-haul logistics, intermodal shipping (container transport), refrigerated freight.
• Off-Highway Tractor Truck
  • Reinforced chassis, heavy-duty suspension, and all-wheel drive (AWD) for rough terrain.
  • Uses large off-road tires with deep treads; may have ROPS/FOPS-certified cabs for safety.
  • Applications: Mining site equipment transport, construction project haulage, forestry logistics (hauling logs).
• Specialized Tractor Truck
  • Customized for niche freight needs:
    • Tanker Tractor: Equipped with reinforced fifth wheels and stability control to tow liquid tank trailers (fuel, chemicals, milk).
    • Lowboy Tractor: High-torque engines and extended wheelbases to tow lowboy trailers for oversized cargo (excavators, bulldozers).
    • Dump Tractor: Paired with dump semi-trailers for bulk material transport (sand, gravel, ore).

4. Classification by Power Source

With the push for environmental sustainability, alternative fuel tractor trucks are gaining popularity.

 

• Diesel Tractor Truck
  • Dominates the market; uses high-torque diesel engines (300-600 HP) for heavy loads and long distances.
  • Advantages: Mature technology, wide service network, high reliability.
• Electric Tractor Truck
  • Battery-powered (BEV) or hybrid (HEV/PHEV); zero tailpipe emissions for urban/short-haul use.
  • Models like Semi and Volvo VNR Electric offer long-range batteries (up to 500 miles) and fast-charging capabilities.
  • Applications: Urban delivery, port logistics, regional freight in emission-restricted zones.
• Alternative Fuel Tractor Truck
  • Includes natural gas (CNG/LNG), propane, and hydrogen fuel cell models.
  • Lower emissions than diesel; suitable for fleets aiming to reduce carbon footprints.
  • Applications: Regional haulage, waste management, and operations with access to alternative fueling infrastructure.

 What are the maintenance requirements for a tractor truck?

Tractor trucks (semi-tractors) operate under heavy loads, long hours, and varied road conditions, so their maintenance requirements are stricter than regular trucks. Maintenance is divided into daily inspections, scheduled preventive maintenance, and specialized component care to ensure reliability, safety, and extended service life. Below is a detailed breakdown:

1. Daily Pre- & Post-Operation Inspections (Mandatory Before/After Each Shift)

These checks focus on safety-critical components to avoid on-road breakdowns:

 

Check Item	Maintenance Content
Engine System	Check engine oil level (via dipstick) and coolant level; inspect for oil/coolant leaks; verify that the air filter indicator is not triggered; test the battery voltage and terminal connections.
Coupling System (Fifth Wheel)	Inspect the fifth wheel locking mechanism, safety latches, and kingpin contact surface for wear, rust, or damage; lubricate the fifth wheel plate with high-temperature grease to ensure smooth pivoting; confirm the trailer connection is secure.
Brake System	Check air pressure in the air brake system (must meet manufacturer's standard, typically 8-10 bar); inspect brake pads/shoes for wear (replace if thickness < 3mm); check brake hoses for cracks or leaks; test parking brake and service brake functionality.
Tires & Wheels	Check tire pressure (including trailer tires if coupled) against the payload; inspect tire tread depth (minimum 1.6mm for on-highway use) and sidewalls for cuts, bulges, or embedded debris; torque wheel lug nuts to the specified value to prevent loosening.
Suspension & Chassis	Inspect leaf springs, airbags, and shock absorbers for damage or sagging; check chassis frame rails for cracks, rust, or loose bolts; lubricate suspension pivot points.
Electrical & Lighting	Test headlights, taillights, turn signals, brake lights, and hazard lights; inspect wiring harnesses for fraying or short circuits; verify GPS/telematics systems are functioning.

2. Scheduled Preventive Maintenance (Based on Mileage/Operating Hours)

Tractor truck maintenance intervals are defined by the manufacturer, with adjustments for harsh operating conditions (e.g., heavy loads, dusty mines, mountainous roads). The standard schedule is as follows:

 

Maintenance Level	Interval	Key Tasks
Minor Maintenance	Every 10,000-15,000 km or 200-300 operating hours	Replace engine oil and oil filter; replace fuel filter and air filter (clean if reusable); top up hydraulic fluid (for clutch/steering) and windshield washer fluid; lubricate all chassis pivot points, fifth wheel, and trailer connections; check belt tension (alternator, water pump).
Intermediate Maintenance	Every 30,000-50,000 km or 600-800 operating hours	Complete minor maintenance tasks + replace transmission oil and filter; inspect drive shafts, universal joints, and differential gears for wear; flush brake fluid and replace with fresh fluid; test ABS/ESC system functionality; inspect turbocharger for oil leaks (if equipped).
Major Maintenance	Every 100,000-150,000 km or 1,500-2,000 operating hours	Complete intermediate maintenance tasks + replace coolant and radiator cap; overhaul the brake system (replace brake drums/rotors if warped); inspect engine cylinder head gaskets and valve clearance; check and adjust clutch pedal travel; inspect the entire exhaust system (including DPF/SCR for emission compliance); repaint rusted chassis areas to prevent corrosion.
Annual Overhaul	Once per year	Comprehensive vehicle inspection: test engine compression; check suspension alignment; verify all safety systems (collision warning, lane departure alert); replace aging hoses and belts; conduct emission testing to meet local regulations; calibrate on-board weighing or telematics systems.

3. Specialized Component Maintenance (High-Wear Parts)

Certain components have higher wear rates and require targeted care:

 

• Fifth Wheel: Lubricate the sliding plate and locking mechanism every 1,000 km; inspect for cracks or excessive wear every 5,000 km; replace the locking jaw and safety latch if they fail to engage securely.
• Clutch System: For manual transmissions, check clutch fluid level monthly; replace the clutch disc and pressure plate if slippage occurs (e.g., engine revving without speed increase). For AMT (automated manual transmission), change the transmission oil and filter per the manufacturer's interval (typically 60,000 km).
• Emission Control Systems (DPF/SCR): For diesel tractors with Euro IV/V or Tier 4 standards:
  • Regenerate the DPF (diesel particulate filter) as needed (triggered automatically by the vehicle's ECU) to burn accumulated soot.
  • Refill DEF (diesel exhaust fluid) before it runs out to avoid engine derating.
  • Clean the SCR catalyst every 100,000 km to prevent clogging.
• Cab & Sleeper (for long-haul models): Clean the cab interior and sleeper berth weekly; check the air conditioning/heating system seasonally; inspect the cab suspension (airbags) for leaks to ensure ride comfort.

4. Maintenance Adjustments for Harsh Operating Conditions

• Off-Highway Use (mining/construction): Shorten minor maintenance intervals to 5,000-8,000 km; increase chassis lubrication frequency; install dust covers for air filters; clean the undercarriage weekly to remove mud and debris.
• Cold Regions: Replace engine oil with low-viscosity winter-grade oil (e.g., 5W-40); use antifreeze with a freezing point below local minimum temperature; check battery insulation and heating systems; drain water from the air brake reservoir daily to prevent freezing.
• Hot Regions: Inspect the radiator and cooling fan monthly; clean the air conditioning condenser; check tire pressure more frequently (heat causes pressure to rise).

  Product Parameters

  SINOTRUK HOWO-NX 6X4 TRACTOR TRUCK RHD

  Model:ZZ4257V344JB1R

  Made Year: Brand New, 2025

  Cabin: H77L -R cabin, 2 air seats, single sleeper, with air conditioner

  Engine: WD615.47, 371hp, Euro II

  Gearbox: HW19710, manual, 10 F & 2 R with HW70 PTO

  Front axle: VGD71  7100kg

  Rear axle: MCX16ZG  2*16000kg    ABS(4S/4M)

  Tires: 315/80R22.5, 11 pcs (including one spare tire)

  Fuel tank: 600L 

  The fifth wheel:50#  

  Overall Dimension for reference:7100*2550*3300mm

  Color: Basic color for free (white, red, blue, orange, gray) Special color charge 500 USD

 

 

 

 

 

 

Detailed Photos

 

 

Certifications

 

 

Company Profile

•  Qingdao Yibolan Machinery Equipment Co., Ltd. , established in January 2022 , is located in the beautiful coastal city of Qingdao, China. We specialises in the supply of wear parts and maintenance components for commercial vehicles and construction machinery.

Our product range encompasses
filters, 


leaf springs,


brake pads,


brake blocks,


thrust rods,


brake drums,


clutches,


Construction machinery bucket teeth,track plates,four-wheel drive systems,and fasteners.


Since our inception, we have developed our proprietary parts brand (YIWO), with products compatible with
dump trucks,


tractor units,


mixer trucks,


cargo trucks,


excavators,


and bulldozers


from brands including Sinotruk (HOWO, SITRAK), Shaanxi Automobile (Delong, Aolong), FAW , Beiben, Shantui, etc. Our components are renowned for their superior quality and competitive pricing, earning widespread customer acclaim.

Since inception, our annual export volume has reached USD 10 million, primarily serving prominent commercial vehicle and construction machinery parts wholesalers and large fleets across the South Pacific, Africa, the Americas, and Southeast Asia. We remain committed to delivering high-performance, reliable, and cost-effective mechanical components, alongside bespoke solutions tailored to client requirements.

Our company currently operates a 3,000-square-metre warehouse centre, maintaining year-round stock of comprehensive vehicle component sets to meet diverse customer requirements. Additionally, we employ over ten technical engineers with 20 years' experience, providing 24-hour online support. Our core values centre on prioritising customer needs, establishing strong partnerships through precise service and support, and jointly achieving sustainable development. We sincerely welcome global buyers to discuss business opportunities.

 

 

 

 

 
 

FAQ

1.Why should be partner with Qingdao YBL ?

•  Quality 

Deliver consistently superior performance and pursue every possible improvement.

•   Agility 

Identify emerging trends and act quickly to acquire new opportunities.

•  Customer Satisfaction

Anticipate customer needs and exceed their expectations.

 

2. what services can we provide?

Accepted Delivery Terms: FOB,CFR,CIF,EXW,FAS,CIP,FCA,CPT,DEQ,DDP,DDU,Express Delivery,DAF,DES;

Accepted Payment Currency:USD,EUR,CNY;

Accepted Payment Type: T/T,L/C,D/P D/A,Western Union;

Language Spoken:English,Chinese

 

3.How about the delivery time ?

depends the quantity, normally 1 month