China manufacturer CE0042m0-9 Rear Axle Half Shaft Gear for CZPT Truck Spare Parts Differential Gear hypoid bevel gear

Product Description

High Quality CE0042M0-9 Rear Axle Half Shaft Gear For CHINAMFG Truck Spare Parts Differential Gear


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Product advantages & features

(1) Forged with 20crmoti and finely ground teeth.
(2) OEM status: CHINAMFG Axle, CHINAMFG Truck.
(3) Self inspection, patrol inspection and completion inspection to ensure 100% pass rate of products.

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Working Principle

Function of gear transmission

1.Variable speed: By meshing 2 gears of different sizes, the speed of the gears can be changed. For example, the gearbox gear can reduce or increase the speed from the engine to meet the needs of the car;
2.Torque change: The meshing of 2 gears of different sizes changes the transmitted torque while changing the speed of the gears. For example, the car gearbox, the main reducer in the drive axle, can change the torque of the car;
3.Change direction: the power action direction of some vehicle engines is perpendicular to the driving direction of the vehicle. The transmission direction of power must be changed to drive the vehicle. This device is usually the main reducer and differential of the car.
Gear transmission has the advantages of high transmission efficiency, compact structure, reliable gear transmission, long service life and stable transmission ratio. Its transmission efficiency can reach 99%. Among the commonly used mechanical transmissions, gear transmission has high efficiency; its disadvantage is that compared with belt transmission and chain transmission, the manufacturing and installation accuracy of gears are high, and the price is more expensive. It is not suitable for transmission with too large distance between shafts.

Basic types of gear transmissions

Gear drive Plane gear transmission Spur gear drive Inner Meshing
External Meshing
Rack and pinion
Helical Gear Drive Inner Meshing
External Meshing
Rack and pinion
Herringbone gear movement  
Space gear transmission Transfer intersecting motion Spur gear
Helical gear
Curved gear
Transfer staggered axis motion Crossed helical gear transmission
Worm turbine
Hypoid gear

Spur gear and helical gear

Spur gears enter and exit meshing along the whole tooth width at the same time. Its transmission efficiency is very high. Its disadvantages are poor stability, impact and noise.
The tooth meshing process of helical gear is longer than that of spur gear, and the number of teeth participating in meshing is also more than that of spur gear. Therefore, the helical gear transmission is stable, the bearing capacity is strong, and the noise and impact are small. The main disadvantage of helical gear is that the axial component force will be generated when the helical gear surface is subjected to the normal force, and the thrust bearing needs to be installed, which complicates the structure.

Lubrication of gear transmission

There is relative sliding and friction between gear transmission tooth surfaces, which will cause tooth surface wear, increase transmission power consumption and reduce transmission efficiency. Therefore, lubricant must be used to reduce wear and accelerate heat dissipation. This lubricant is gear oil. Different kinds of gears on the car are lubricated with different gear oils, which must not be added wrong. For example, automatic transmission oil and CVT transmission oil cannot be mixed.

Honor Certificate


Q1. Are you a factory or trading company? 
We are a factory integrating research, development, production and sales.

Q2. What are the advantages of your products?
We support product customization to meet customer needs for special products. We can strictly control the products from raw materials to production, processing, product quality inspection, delivery, packaging, etc., and provide customers with high-end products and the most advantageous prices.

Q3. How about products price?
We are a factory, all products are direct sale at factory price. For the same price, we will provide the best quality; for the same quality, we have the most advantageous price.

Q4. What is your terms of packing?
We have branded packaging and neutral packaging, and we can also do what you want with authorization. This is flexible.

Q5. How to guarantee your after-sales service?
Strict inspection during production, Strictly check the products before shipment to ensure our packaging in good condition. Track and receive feedback from customer regularly. Our products warranty is 365 days.
Each product provides quality assurance service. If there is a problem with the product within the warranty period, the customer can negotiate with us in detail about the related claims, and we will do our best to satisfy the customer.

Q6. How can I accurately buy the products I need?
We need accurate product number, If you can’t provide product number, you can send us your product picture, or tell us your truck model, engine name plate, and so on. we will
determine exactly what you need products.

Q7. Do you accept third party inspection?
Yes.we do

Q8. How about your delivery time?
Generally, it will take 3 to 10 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.

Q9. What are your brand agency conditions and advantages?
After we CHINAMFG an agent in 1 city, we will not CHINAMFG a second company to protect the agent’s brand advantage and price advantage. And we will help the agent develop customers and solve all kinds of difficult and miscellaneous problems about products.

Q10. What is your terms of payment?
By TT or LC. We’ll show you the photos of the products and packages before you pay the balance.

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After-sales Service: Support
Warranty: 12 Months
Type: Truck Gear
US$ 75/Piece
1 Piece(Min.Order)


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Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

differential gear

Can you provide examples of vehicles that use differential gears?

Differential gears are utilized in various types of vehicles to enable smooth and efficient power distribution to the wheels. Here are some examples of vehicles that use differential gears:

1. Passenger Cars:

Most passenger cars, including sedans, hatchbacks, and SUVs, are equipped with differential gears. These gears are typically found in the rear axle of rear-wheel-drive vehicles or in both the front and rear axles of all-wheel-drive vehicles. Differential gears allow the wheels to rotate at different speeds while maintaining power transfer, ensuring smooth cornering and traction on different road surfaces.

2. Trucks and Pickup Trucks:

Trucks and pickup trucks commonly employ differential gears to enhance their performance, especially for towing, hauling, and off-road applications. Rear-wheel-drive trucks utilize differential gears in the rear axle, while many modern trucks also feature all-wheel-drive or four-wheel-drive systems with differential gears in both the front and rear axles. These differential gears enable improved traction, power distribution, and maneuverability in various driving conditions.

3. SUVs and Crossovers:

Sport utility vehicles (SUVs) and crossovers often incorporate differential gears to provide enhanced off-road capability and all-weather performance. Many SUVs are equipped with all-wheel-drive or four-wheel-drive systems that utilize differential gears in the front and rear axles. These gears allow power transfer between the wheels and enable optimal traction on different terrains, making SUVs well-suited for off-road adventures and challenging driving conditions.

4. Sports Cars and Performance Vehicles:

Sports cars and high-performance vehicles often employ advanced differential systems for improved handling, stability, and performance. Examples include limited-slip differentials, electronic differentials, or torque vectoring differentials. These systems use differential gears in combination with advanced technologies to distribute torque to the wheels based on driving conditions, enhancing traction, cornering ability, and overall vehicle dynamics.

5. Off-Road Vehicles and SUVs:

Differential gears are essential components in off-road vehicles designed for rugged terrains and extreme driving conditions. Vehicles such as dedicated off-road SUVs, trucks, and specialized off-road vehicles like Jeeps and Land Rovers utilize differential gears, including locking differentials, to maximize traction and improve off-road performance. These gears allow for better wheel articulation, independent wheel movement, and power distribution to overcome obstacles and maintain traction on challenging off-road trails.

6. Commercial and Heavy-Duty Vehicles:

Commercial trucks, buses, and heavy-duty vehicles utilize differential gears to handle the demands of heavy loads and challenging driving conditions. Differential gears in these vehicles help distribute torque to the drive wheels efficiently, ensuring better traction, stability, and power transfer. They are critical for the performance and safety of large commercial vehicles that operate under varying load and road conditions.

7. Racing Cars:

In racing, differential gears play a vital role in enhancing performance and handling characteristics. High-performance racing cars, including Formula 1 cars, rally cars, and sports prototypes, utilize advanced differential systems that allow precise control of power distribution to optimize acceleration, cornering, and stability during high-speed maneuvers.

In summary, differential gears are utilized in a wide range of vehicles, including passenger cars, trucks, SUVs, sports cars, off-road vehicles, commercial vehicles, and racing cars. These gears are integral to achieving optimal power distribution, traction, and maneuverability in various driving conditions and applications.

differential gear

How do differential gears function in both front-wheel-drive and rear-wheel-drive vehicles?

In both front-wheel-drive and rear-wheel-drive vehicles, differential gears serve the same fundamental purpose of distributing power from the engine to the wheels while allowing them to rotate at different speeds. However, their specific configurations and functions differ between these two types of drivetrains. Here’s a detailed explanation of how differential gears function in both front-wheel-drive and rear-wheel-drive vehicles:

Front-Wheel-Drive Vehicles:

In front-wheel-drive vehicles, the differential gears are typically integrated into the transaxle assembly, which combines the transmission and differential into a single unit. Here’s how the differential gears function in front-wheel-drive vehicles:

  • Power Input: The engine’s power is transmitted through the transmission to the transaxle assembly.
  • Ring and Pinion Gears: The power from the transaxle is delivered to a set of ring and pinion gears within the differential assembly. These gears are responsible for distributing torque to the front wheels.
  • Spider Gears: The ring gear is connected to a carrier that houses multiple smaller gears called spider gears. These spider gears allow the front wheels to rotate at different speeds during turns.
  • Equal Torque Distribution: In front-wheel-drive vehicles, the differential gears prioritize equal torque distribution between the two front wheels. This design helps maintain traction and stability during acceleration and cornering.
  • Traction Control: Some front-wheel-drive vehicles may also incorporate additional features in the differential assembly, such as electronic limited-slip differentials or traction control systems. These features help optimize traction by transferring power to the wheel with better grip, reducing wheel spin and improving overall performance.

Rear-Wheel-Drive Vehicles:

In rear-wheel-drive vehicles, the differential gears are typically located in the rear axle assembly. Here’s how the differential gears function in rear-wheel-drive vehicles:

  • Power Input: The engine’s power is transmitted through the transmission to the driveshaft, which connects to the rear axle assembly.
  • Drive Pinion and Ring Gear: The driveshaft is connected to a drive pinion gear, which meshes with a larger ring gear. This gear set is responsible for transferring power to the rear wheels.
  • Spider Gears: Similar to front-wheel-drive vehicles, rear-wheel-drive vehicles also have spider gears housed within the differential assembly. The spider gears allow the rear wheels to rotate at different speeds during turns.
  • Torque Distribution: In rear-wheel-drive vehicles, the differential gears distribute torque to the rear wheels in a manner that prioritizes rear-wheel traction and propulsion. This configuration is particularly beneficial for vehicle acceleration and load-carrying capability.
  • Enhanced Features: Rear-wheel-drive vehicles may also incorporate advanced differential systems, such as limited-slip differentials or electronic locking differentials, to optimize traction and performance. These features help improve grip, especially in challenging driving conditions or when driving off-road.

In summary, differential gears function differently in front-wheel-drive and rear-wheel-drive vehicles due to their distinct drivetrain configurations. In front-wheel-drive vehicles, the differential gears are typically integrated into the transaxle assembly and prioritize equal torque distribution to the front wheels. In rear-wheel-drive vehicles, the differential gears are located in the rear axle assembly and focus on torque distribution to the rear wheels for propulsion. Understanding the specific functions of differential gears in each drivetrain type is essential for optimizing vehicle performance, traction, and stability.

differential gear

Can you explain the concept of torque distribution in a differential gear?

Torque distribution is a fundamental concept in a differential gear that refers to the way rotational force is distributed among the wheels of a vehicle. Here’s a detailed explanation:

In a vehicle equipped with a differential gear, torque is transmitted from the engine to the differential, and then further distributed to the wheels. The differential gear ensures that torque is divided between the wheels, allowing them to receive power and propel the vehicle forward.

1. Power Input:

The torque distribution process begins with the power input from the engine. The engine generates rotational force, or torque, which is transmitted through the drivetrain to the differential gear.

2. Differential Assembly:

Within the differential gear, torque is distributed among several components, including the ring gear, pinion gear, side gears, and spider gears. The specific arrangement may differ depending on the type of differential used.

3. Side Gears and Spider Gears:

The side gears are connected to the axle shafts, which extend to the wheels. The spider gears, also known as planetary gears, are positioned between the side gears. When torque is applied to the differential assembly, it is transferred to the side gears through the spider gears.

4. Equal Torque Distribution:

In a straight-line driving scenario, where both wheels have equal traction and are rotating at the same speed, the spider gears rotate freely on their respective shafts. This allows the side gears to rotate at the same speed as the differential case, resulting in equal torque distribution to both wheels. As a result, both wheels receive an equal share of power from the differential.

5. Unequal Torque Distribution:

During turns or when one wheel encounters different traction conditions, the wheels need to rotate at different speeds. In this situation, the spider gears are forced to rotate along with the side gears due to the difference in rotational speeds between the two wheels.

As the spider gears rotate, they allow the side gears to rotate at different speeds, compensating for the variation in wheel speeds. This results in unequal torque distribution, with the outer wheel (on the outside of the turn) receiving more torque and the inner wheel (on the inside of the turn) receiving less torque. The differential gear enables this torque differentiation, ensuring that the wheels can rotate independently while still receiving power from the differential.

6. Optimizing Traction:

The torque distribution in a differential gear plays a crucial role in optimizing traction. Unequal torque distribution allows the wheel with better traction to receive more power, maximizing the vehicle’s ability to maintain forward motion. This is particularly beneficial in situations where one wheel is on a slippery surface or encounters reduced traction conditions.

7. Differential Types:

It’s important to note that different types of differentials can provide varying torque distribution characteristics. For example, open differentials primarily distribute torque equally, while limited-slip differentials and locking differentials offer varying degrees of torque biasing to improve traction in specific conditions.

In summary, torque distribution in a differential gear refers to the division of rotational force among the wheels of a vehicle. The differential gear enables equal torque distribution during straight-line driving and unequal torque distribution during turns or varied traction conditions. By optimizing torque distribution, the differential gear ensures efficient power delivery, traction optimization, and overall performance of the vehicle.

China manufacturer CE0042m0-9 Rear Axle Half Shaft Gear for CZPT Truck Spare Parts Differential Gear hypoid bevel gearChina manufacturer CE0042m0-9 Rear Axle Half Shaft Gear for CZPT Truck Spare Parts Differential Gear hypoid bevel gear
editor by Dream 2024-05-08