FDC3193200030000116 Rear Axle Main Reducer Assembly shacman f2000 f3000 X3000 X5000 X6000 Hande

Product Description of FDC3193200030000116 Rear Axle Main Reducer Assembly (i=1.333) and HDZ300 Wheel-side Reduction Drive Axle (i=5.262, 28/21)I. Product OverviewFDC3193200030000116 Rear Axle Main Reducer Assembly (speed ratio i=1.333) is the core transmission component of the HDZ300 wheel-side reduction drive axle. It is used in conjunction with the HDZ300 wheel-side reduction drive axle (total speed ratio i=5.262, gear tooth ratio 28/21) and is mainly applied to the rear axle drive system of heavy-duty vehicles such as heavy-duty trucks and engineering vehicles. This combination undertakes the key mission of reducing speed, increasing torque, and changing the direction of power transmission. Among them, the main reducer is responsible for primary speed reduction and torque increase, and the wheel-side reducer completes secondary speed reduction and torque increase. Through precise speed ratio matching, efficient power transmission is achieved, adapting to high-intensity operation requirements such as heavy load, climbing, and complex road conditions. It is a core assembly combination that ensures stable vehicle operation and sufficient power, with both reliability, durability and adaptability.Among them, the speed ratio i=1.333 represents the gear transmission ratio of the rear axle main reducer, which is the ratio of the rotational angular velocity of the drive shaft to the rotational angular velocity of the axle half-shaft, reflecting the speed reduction and torque increase capacity of the main reducer; the total speed ratio i=5.262 of the HDZ300 wheel-side reduction drive axle is achieved through the coordination of the main reducer speed ratio and the wheel-side reducer speed ratio. The 28/21 in the bracket is the basis for calculating the speed ratio, that is, the number of teeth of the driven gear of the main reducer is 28 and the number of teeth of the driving gear is 21. The ratio of the two corresponds to the core speed ratio parameter, ensuring precise matching and efficient output of power transmission.II. Product Features(I) Features of FDC3193200030000116 Rear Axle Main Reducer Assembly (i=1.333)

• Precise Speed Ratio Adaptation: Adopting an optimized speed ratio design of i=1.333, which belongs to the category of small speed ratio, it is suitable for the total speed ratio requirement of the HDZ300 wheel-side reduction drive axle. Cooperating with the wheel-side reducer to achieve two-stage speed reduction and torque increase, it can not only ensure the fuel economy of the vehicle during high-speed driving, but also cooperate with the wheel-side reduction mechanism to meet the high torque requirement during heavy load and climbing, achieving a balance between power and economy.
• Exquisite Gear Technology: The core transmission gears are forged from high-strength alloy materials, and undergo precision machining, carburizing and quenching and other heat treatment processes. They have high tooth surface smoothness and excellent meshing accuracy, which effectively reduces wear and noise during gear meshing, improves transmission efficiency, and at the same time enhances the impact resistance and wear resistance of the gears, adapting to the use requirements of long-term heavy load working conditions.
• Compact and Durable Structure: Adopting an integrated shell design, it integrates core components such as the main reducer and differential. The layout is scientific and reasonable, occupying a small space, and adapting to the installation size of the HDZ300 wheel-side reduction drive axle. The shell is made of high-strength cast iron material, with strong rigidity and outstanding anti-deformation ability, which can bear the impact load during power transmission and extend the service life of the product.
• Excellent Sealing and Protection: Adopting a combined design of skeleton oil seal and lip oil seal, the sealing performance is reliable, which can effectively prevent lubricating oil leakage, and at the same time isolate external impurities such as dust and water vapor from entering the interior, protecting core components such as gears and bearings from wear, adapting to harsh working environments such as high temperature, humidity and dust, and reducing the failure rate.
• Efficient and Stable Transmission: The optimized gear meshing angle design reduces energy loss during power transmission, with high transmission efficiency, stable operation and no obvious abnormal noise. At the same time, it is equipped with high-quality tapered roller bearings, which can effectively bear radial and axial forces, ensuring transmission accuracy and stability, and improving driving comfort.

(II) Features of HDZ300 Wheel-side Reduction Drive Axle (i=5.262, 28/21)

• Two-stage Speed Reduction and Torque Increase: Adopting a two-stage speed reduction structure of "main reducer + wheel-side reducer", the total speed ratio is i=5.262, and precise speed ratio matching is achieved through the gear tooth ratio of 28/21. It can convert the high-speed and small-torque transmitted by the engine into low-speed and large-torque, greatly improving the wheel-end driving force, meeting the power requirements of heavy vehicles in complex scenarios such as heavy load, climbing and muddy road conditions, and the driving force is significantly higher than that of ordinary drive axles.
• Optimized Wheel-side Structure: The wheel-side reducer adopts a planetary gear transmission structure, which is small in size and high in transmission efficiency. It integrates the reduction mechanism near the wheel rim, reduces the size of the main reducer, improves the ground clearance of the drive axle, enhances the passability of the vehicle, adapts to operations in complex road conditions such as mines and construction sites, and avoids scratch damage to the bottom of the drive axle by obstacles.
• Strong Load-bearing Capacity: The axle housing is made by high-strength casting process, combined with topology optimization technology, which achieves lightweight design while ensuring structural strength. The single-axle load can reach 16t, which can effectively bear the heavy load of heavy vehicles and the impact load during driving, with small bending deformation, not easy to be damaged after long-term use, and adapting to various heavy-load transportation scenarios.
• Excellent Differential Performance: Equipped with built-in inter-axle differential and wheel-side differential, it can automatically adjust the speed difference between left and right wheels and front and rear axles according to road conditions, avoid wheel slipping, improve the passability and driving stability of the vehicle under complex road conditions, and at the same time reduce tire wear and extend tire service life, adapting to multi-condition driving requirements.
• Good Heat Dissipation Performance: Both the wheel-side reducer and the main reducer are equipped with independent lubricating oil circuits and heat dissipation structures. The optimized lubrication system design can effectively reduce the temperature during operation, avoid component damage caused by overheating, and ensure the stable operation of the product under high-intensity and long-time operations, reducing the risk of failure.

III. Product Specifications(I) Specifications of FDC3193200030000116 Rear Axle Main Reducer Assembly (i=1.333)

• Product Model: FDC3193200030000116
• Product Name: Rear Axle Main Reducer Assembly
• Adapted Axle Model: HDZ300 Wheel-side Reduction Drive Axle
• Speed Ratio (i): 1.333 (adapted for total speed ratio coordinated work)
• Transmission Form: Bevel gear meshing transmission, cooperating with wheel-side reducer to achieve two-stage speed reduction
• Gear Parameters: Adapted to the 28/21 tooth ratio of HDZ300 drive axle, gear module, helix angle and other parameters are precisely matched to ensure smooth meshing
• Shell Material: High-strength cast iron, anti-deformation, wear-resistant and corrosion-resistant
• Bearing Type: Tapered roller bearing, bearing radial and axial forces to ensure stable transmission
• Seal Type: Skeleton oil seal + lip oil seal, waterproof, dustproof and anti-lubricating oil leakage
• Installation Method: Designed according to the standard size of HDZ300 wheel-side reduction drive axle, bolt-fixed, adapted to the original vehicle installation position, no additional modification required

(II) Specifications of HDZ300 Wheel-side Reduction Drive Axle (i=5.262, 28/21)

• Axle Model: HDZ300
• Product Name: Wheel-side Reduction Drive Axle
• Adapted Models: Heavy-duty trucks, engineering dump trucks, tractors and other heavy-duty models
• Total Speed Ratio (i): 5.262 (basis for speed ratio calculation: number of teeth of driven gear 28/number of teeth of driving gear 21)
• Speed Reduction Form: Two-stage speed reduction (main reducer + wheel-side planetary gear reducer)
• Rated Load: 16t (single axle)
• Wheelbase: 2190mm (standard configuration, can be adjusted according to vehicle model requirements)
• Leaf Spring Center Distance: 1040mm (common specification, adapted to the suspension system of heavy-duty models)
• Axle Housing Material: High-strength cast alloy, lightweight design, about 15% lighter than competitors of the same level
• Wheel-side Structure: Planetary gear type wheel-side reducer, integrated near the wheel rim
• Differential Type: Built-in inter-axle differential and wheel-side differential
• Brake Specification: 410*180 (adapted to the braking needs of heavy-duty models, ensuring stable and reliable braking)

IV. Product Advantages(I) Strong Combination Adaptability and Efficient Power TransmissionFDC3193200030000116 rear axle main reducer (i=1.333) is precisely matched with HDZ300 wheel-side reduction drive axle (i=5.262, 28/21). The speed ratio matching is scientific and reasonable. Through the two-stage speed reduction and torque increase structure, the primary speed reduction of the main reducer and the secondary speed reduction of the wheel-side reducer are organically combined, with small power transmission loss. The transmission efficiency is significantly higher than that of ordinary drive axles. It can not only meet the fuel economy of the vehicle during high-speed driving, but also provide sufficient wheel-end torque, adapting to complex working conditions such as heavy load and climbing, achieving dual optimization of power and economy, and solving the pain points of insufficient power or high fuel consumption of a single speed reduction structure.(II) Outstanding Load-bearing and Anti-load Capacity, Strong DurabilityBoth the main reducer and the drive axle adopt high-strength materials and advanced manufacturing processes. The main reducer gears are subjected to precision machining and heat treatment, with excellent wear resistance and impact resistance; the HDZ300 drive axle housing adopts casting process and topology optimization technology, which greatly improves structural rigidity and anti-deformation ability while achieving lightweight, and can bear the heavy load of heavy vehicles and the impact of complex road conditions for a long time, with small component wear and long service life. At the same time, the perfect sealing and lubrication design further reduces the wear of internal components, reduces the cost of later maintenance and replacement, is suitable for long-term high-intensity operation, and its reliability is far superior to ordinary similar products.(III) Excellent Passability and Wide Adaptation ScenariosThe HDZ300 wheel-side reduction drive axle adopts an integrated wheel-side reduction structure, which reduces the size of the main reducer, greatly improves the ground clearance of the drive axle, avoids scratch damage to the bottom of the drive axle by obstacles, and enhances the passability of the vehicle under complex road conditions such as mines, construction sites and muddy roads; the speed ratio design is suitable for various heavy-load scenarios. Whether it is highway heavy-load transportation or complex operations in mines and engineering sites, it can stably play the role of power transmission. Its adaptability is far superior to ordinary single-stage speed reduction drive axles, meeting the diverse operation needs of different users.(IV) Easy Installation and Strong VersatilityFDC3193200030000116 rear axle main reducer is strictly designed according to the standard size of HDZ300 wheel-side reduction drive axle. The mounting holes and connection parts are completely matched with the drive axle, no additional modification is required, the installation process is simple and efficient, and assembly and replacement can be completed quickly, saving maintenance man-hours and installation costs. At the same time, the product adopts a standardized design, which is compatible with the rear axle system of various heavy-duty models, has strong versatility, and can be flexibly adapted to vehicles in different operation scenarios according to user needs, reducing the user's procurement and use costs.(V) Stable Operation and Low Failure RateThe entire set of products has undergone strict performance testing and working condition simulation. Every component from the gear meshing of the main reducer to the wheel-side transmission of the drive axle has been precisely adjusted, with stable operation and no obvious abnormal noise; the perfect sealing and protection design effectively isolates external impurities, avoiding wear and failure of internal components; the independent heat dissipation and lubrication system prevents component damage caused by overheating, greatly reducing the product failure rate. In addition, the optimized design of the built-in differential further improves the driving stability of the vehicle, reduces the downtime caused by faults, ensures the normal operation of the vehicle, and improves the user's operation efficiency.(VI) Lightweight Design and Better Energy ConsumptionThe HDZ300 wheel-side reduction drive axle adopts integration and topology optimization technology, and the single-axle weight is about 15% lighter than that of domestic competitors of the same level, leading the industry in lightweight level; at the same time, the precise speed ratio matching and efficient transmission design reduce energy loss during power transmission, effectively reducing vehicle fuel consumption, balancing heavy-load performance and fuel economy, and can significantly reduce the user's operation costs in long-term use, complying with the development trend of energy conservation and consumption reduction of heavy vehicles.V. Application ScenariosThis set of products (FDC3193200030000116 rear axle main reducer assembly + i=5.262 HDZ300 wheel-side reduction drive axle) is mainly applied to various heavy-duty vehicles such as heavy-duty trucks, engineering dump trucks, tractors and mining vehicles, and is suitable for various complex working conditions such as highway heavy-load transportation, mining, engineering construction and field operations. It is especially suitable for scenarios with high requirements on vehicle power, load-bearing capacity and passability, such as mountain heavy-load transportation, mine underground operations, and engineering site material transfer. It can stably play the core role of speed reduction, torque increase and power transmission, ensuring efficient, safe and stable operation of the vehicle.